Unit Converter with commonly used Units

Common converting units for Acceleration, Area, Density, Energy, Energy per unit mass, Force, Heat flow rate, Heat flux, Heat generation per unit volume and many more.

How to Convert between Units?

You can convert between units by using cross-multiplication.

Unit Factor Converting

Example - How many meter water column is 2000 Pa?

From the Pa line in the pressure section in this page 1 Pa = 1.020x10^-4 m H₂O. A cross-multiplication for the conversion can be expressed as:

x / (2000 Pa) = (1.020x10^-4 m H₂O) / (1 Pa)

x = (2000 Pa) (1.020x10^-4 m H₂O) / (1 Pa)

= 0.204 m H₂O

Example - How many square feet is is 132 square miles?

From the first line in the area section in this page 1076.39 sq ft = 3.86102x10^-5 sq mi. A cross-multiplication for the conversion can be expressed as:

x / (132 sq mi) = (1076.39 sq ft) / (3.86102x10^-5 sq mi)

x = (132 sq mi) (1076.39 sq ft) / (3.86102x10^-5 sq mi)

= 3679946750 sq ft

Cross-Multiplication Calculator

The default values are from the first example above.

x / = /

Load Calculator!

Unit symbols are given in [brackets]

Acceleration

foot/second² [ft/s²], metre/second² [m/s²], galileo = gal = centimeter/second² [Gal] = [cm/s²], inch/second² [in/s²], standard gravity [g₀], kilometer per hour/second [kph/s], miles per hour/second [mph/s]

1 m/s² = 3.28084 ft/s² = 100 cm/s² = 39.37 inch/s²
1 ft/s² = 0.3048 m/s² = 30.48 cm/s² = 30.48 Gal
1 g₀ = 9.80665 m/s² = 32.17405 ft/s²= 386.1 in/s²= 35 kph/s = 22 mph/s

Angle

arc minute = minute of arc [arcmin], arc second = second of arc [arcs], circle = circumference [CC]=[CIRC]=[circum] = revolution [rev] = turn [tr] , degree [°]=[deg], gradian [grad]=gon [^g]= [gon], milliarcsecond [mas], quadrant [quadrant], radian [rad], sign [sign],

1 arcmin = 60 arcs = 1°/60 = 0.016667 ° = 0.018519 gon = 0.00004630 rev = 0.00029089 rad
1 arcs = 1 arcmin/60 = 0.016667 arcmin = 1°/3600 = 0.27778 x10^-3 ° = 0.3086 x10^-3 gon = 4.848x10^-6 rad = 0.772 x10^-6 rev
1 circum = 1 rev = 1 tr = 2π rad = 6.28319 rad = 360° = 400^g = 12 signs = 21600 arcmin
1 ° = 1 deg = 60 arcmin = 3600 arcs = 1.11111 gon = 1 rev/360 = 0.002778 rev = 1 sign/30 = 0.03333 sign = 1 quadrant/90 = 0.011111 quadrant
1 grad = 1 gon = 1^g = 1 rev/400 = 0.0025 rev = 0.9 ° = 54 arcmin
1 quadrant = 90° = 100 gon = 3 sign = 1 rev/4 = 0.25 rev = 5400 arcmin = 1.570796 rad
1 rad (planar angle) = 1 circum/2π = 0.159155 circum = 0.15915 rev = 57.29578 ° = 57.29578 deg = 63.662^g = 63.662 gon = 3437.75 arcmin = 0.63662 quadrant = 206265 arcs
1 rev = 1 tr = 1 circum = 2π rad = 6.28319 rad = 360° = 400^g = 12 signs = 21600 arcmin
1 sign = 30° = 1800 arcmin = 33.333 gon = 0.3333 quadrant = 0.523599 rad =0.083333 rev

Solid angle [Ω]
hemisphere [hemisphere], solid angle [Ω], square degree [deg²]=[(°)²]=[sq deg], square radian [sq rad]= steradian [sr], millisteradians [msr],

1 hemisphere = 6.28319 sr = 20626.52 deg² = 0.4999992042 Ω
1 deg² = (π/180)² sr = 3.0462 x10-4 sr = 0.30462 msr
1 Ω = 2.000003183 hemisphere = 12.5664 sr = 41253.11457 deg²
1 sr = (180/π)² deg² = 3282.8 deg² = 0.1591 hemispheres

Area

acre [ac], are [a], arpent [arpent], barn [b], centiare [ca], circular inch [circ in], circular mil [cmil], hectare[ha], kanal [kanal], marla [marla], rood [ro], section [section], square centimeter [cm²], square foot [sq ft]=[ft²], square inch [sq in]= [in²], square kilometer [km²], square metre[m²], square mile = section [sq mi]= [mi²], square mil=square thou [sq mil]=[mil²]=[th²], square millimeter [mm²], square yard [sc yd]=[yd²], square rod=pole=perch [sq rd]=[rd²], township, yardland

Area Unit Converter
1 a = 0.024711 ac (Int) = 1076.39 sq ft = 100 m² = 3.86102x10^-5 sq mi = 119.599 sq yd
1 ac = 1 sq mi/640 = 0.404686 ha = 4046.86 m² = 43560.174 sc ft (Int) = 43560 sc ft (US Survey) = 4840 sc yd = 40.46873 a
1 arpent = about 0.8448 ac = 3439.1 m² = 36800 ft² = 4088.9 yd²
1 b = 1x10^-24 cm² = 1x10-28 m² = 1.55x10^-19 th²
1 ca = 0.01 a = 10.764 sq ft = 1550 sq in = 1 m² = 1.19599 sq yd
1 circ in = 0.7854 in² = 506.71 mm² = 5.067 cm²
1 cmil = 1x10^-6 circ in = 0.7854 mil² = 5.06707x10^-6 cm² = 7.85398x10^-7 sq in = 0.000507 mm²
1 cm² = 10^-4 m² = 100 mm² = 0.155 in² = 0.1974 circ in
1 ft² = 144 in² = 1 yd²/9 = 0.1111 yd² = 0.0929 m² = 3.587x10^-8 mi²
1 ha = 100 a = 10000 m² = 1x10⁸ cm² = 2.471 ac = 107639.1 sq ft = 0.00386 sq mi = 395.367 sq rd
1 in² = 1 ft²/144 = 6.944x10^-3 ft² = 1x10⁶ th² = 645.2 mm² = 6.452 cm² = 6.452x10^-4 m² = 7.716x10^-4 yd² = 2.491x10^-10 mi²
1 kanal (Imperial) = 1 ac/8 = 20 marla = 650 yd² = 5400 ft² = 505.857 m²
1 km² = 10² ha² = 10⁶ m² = 10¹⁰ cm² = 10¹² mm²
1 m² = 1550 in² = 10.764 ft² = 1.1968 yd² = 3.861x10^-7 mi²
1 marla (Imperial=Pakistani=Indian, big) = 1 rd² = 1 ac/160 = 0.00625 ac = 1 kanal/20 = 0.05 kanal = 30.25 yd² = 25.2929 m² = 272.25 ft² = 1.211 marla (Indian)
1 marla (Indian = Pakistani, small) = 25 yd² = 225 ft² = 20.903 m² = 0.826 marla (Pakistani)
1 mi² = 1 section = 2.590x10⁶ m² = 0.4015x10¹⁰ in² = 2.788x10⁷ ft² = 3.098x10⁶ yd²=640 ac
1 mil²= 1 th² = 1x10^-6 in² = 1.2732 cmil = 0.0006452 mm²
1 mm² = 0.01 cm2 = 1x10^-6 m² = 0.00155 in² = 1550 th²
1 rd² = 1 marla Pakistani = 1 sq perch = 30¼ sq yd = 25.2928 m² = 1/160 ac
1 ro = 1 ac/4 = 1011.5 m² = 40 sq rd = 40 sq perches
1 section = 1 sq mi = 2.59 10⁶ m² = 2.59 km² = 259 ha = 3.0976 10⁶ sq yd = 640 ac
1 th² = 1 mil² = 1x10^-6 in² = 1.2732 cmil = 0.0006452 mm²
1 township = 36 sq mi = 23040 ac = 36 section = 9.3239 10⁷ m² = 9324 ha = 93.24 km²
1 yardland = ~30 ac = ~1.2x10⁵ m²
1 yd² = 9 ft² = 1296 in² = 0.3228x10^-6 mi² = 0.8361 m²

Japan

1 ho-ri = 15.42 km2 = 5.9637 sq mi
1 jo = 0.5 tsubo = 1.65289 m² = 17.7916 ft²
1 se = 30 tsubo = 60 jo = 99.17 m² = 1067.5 ft²
1 tsubo = 1 bu = 1 se/30 = 3.306 m² = 35.5832 ft²

Russia

1 kwadr. archin = 0.5058 m² = 5.44439 ft²
1 kwadr. saschen = 4.5522 m² = 48.9995 ft²
1 dessjatine = 10925 m² = 2.6963 ac
1 kwadr. werst = 1.138 km² = 281.206 ac

Area Moment of Inertia

1 cm⁴ = 10^-8 m⁴ = 10⁴ mm⁴
1 in⁴ = 4.16x10⁵ mm⁴ = 41.6 cm⁴

Capacitance

farad [F] = [s⁴A²/m²kg]

1 F = 1000 mF = 10⁶ μF = 10⁹ nF

Catalytic Activity

1 kat = 1 mol/s = 10⁶ μmol/s = 3600 mol/h

Conductance

abmho [abmho] = absiemens [abS] = gigasiemens [GS], picosiemens [pS], siemens [S] = mho [mho], statmho [statmho]

1 abmho = 1 abS = 1 GS = 1000 megamho = 1 x10⁹ mho = 1 x10⁹ S = 8.98755 x10²⁰ statmho
1 pS = 1x10^-12 S
1 S = 1 mho = 1 x10-9 GS
1 statmho = 1.112650 pS = 1.112650 x10^-12 S = 1.112650 x10^-12mho

Current

abampere [aA] = biot [biot], ampere [A], coulomb/second [C/s], coulomb (international)/second [C(Int)/s], faraday (chemical)/second [F(chem)/s], microampere [μA], milliampere [mA], statampere [statA],

1 abA = 1 biot = 10 A = 1.03638x10^-4 F(chem)/s = 2.99792x10¹⁰ statA = 10.00165 C(Int)/s
1 A = 0.1 abA = 1 C/s = 1.000165 A (Int) = 1.000165 C(Int)/sec = 1.03638x10^-5 F(chem)/s = 1x10⁶ μA = 1000 mA = 2.99792x10⁹ statA
1 A(Int) = 0.99985 A
1 biot = 1 abA = 10 A = 1.03638x10^-4 F(chem)/s = 2.99792x10¹⁰ statA = 10.00165 C(Int)/s
1 C(Int)/s = 0. 999835 C/s = 0.999835 A
1 C/s = 1.000165 C(Int)/s = 1 A = 1.03638x10^-5 F(chem)/s = 2.99792x10⁹ statA
1 F(chem)/s = 96489.984 A
1 μA = 1 x10^-6 A
1 mA = 1 x10^-3 A
1 statA = 3.336 x10^-10 A

Data Rate

1 baud = 1 bps = 0.125 bytes/s

Density

kilogram/cubic metre [kg/m³] = gram/liter [g/l], kilogram/liter [kg/l] = gram/cubic centimetre [g/cm³]= ton(metric)/cubic metre [t/m³], once/gallon(US liquid) [oz/gal(US liq)] pound/cubic inch [lb/in³], pound/cubic foot [lb/ft³], pound/gallon(UK) [lb/gal(UK)], pound/gallon(US liquid) [lb/gal(US liq)], slug/cubic foot [sl/ft³], ton(short)/cubic yard [ton(short)/yd³], ton(long)/cubic yard [yd³]

Density - mass and weight

Density Water = 1000 kg/m³ = 62.43 lb/ft³ = 8.35 lb/gal(US liq) = 10.02 lb/gal(UK) = 1.941 sl/ft³

1 g/cm³ = 1 kg/l = 1000 kg/m³ = 62.428 lb/ft³ = 0.03613 lb/in³ = 1.9403 sl/ft³ = 10.0224 lb/gal(UK) = 8.3454 lb/gal(US liq) = 0.5780 oz/in³ = 0.7525 ton(long)/yr³
1 g/l = 1 kg/m³ = 0.001 kg/l = 0.000001 kg/cm³ = 0.001 g/cm³ = 0.99885 oz/ft³ = 0.0005780 oz/in³ = 0.16036 oz/gal(UK) = 0.1335 oz/gal(US liq) = 0.06243 lb/ft³ = 3.6127x10-5 lb/in³ = 1.6856 lb/yd³ = 0.010022 lb/gal(UK) = 0.0083454 lb/gal(US liq) = 0.0007525 ton(long)/yd³= 0.0008428 ton(short)/yd³
1 kg/l = 1 g/cm³ = 1000 kg/m³ = 62.428 lb/ft³ = 0.03613 lb/in³ = 1.9403 sl/ft³ = 8.3454 lb/gal(US liq) = 0.5780 oz/in³ = 0.7525 ton(long)/yr³
1 kg/m³ = 1 g/l = 0.001 kg/l = 0.000001 kg/cm³ = 0.001 g/cm³ = 0.99885 oz/ft³ = 0.0005780 oz/in³ = 0.16036 oz/gal(UK) = 0.1335 oz/gal(US liq) = 0.06243 lb/ft³ = 0.00194 sl/ft³ = 3.6127x10-5 lb/in³ = 1.6856 lb/yd³ = 0.010022 lb/gal(UK) = 0.008345 lb/gal(US liq) = 0.0007525 ton(long)/yd³ = 0.0008428 ton(short)/yd³
1 lb/ft³ = 27 lb/yd³ = 0.009259 oz/in³= 0.0005787 lb/in³= 16.01845 kg/m³ = 0.01602 g/cm³ = 0.1605 lb/gal(UK) = 0.1349 lb/gal(US liq) = 2.5687 oz/gal(UK) = 2.1389 oz/gal(US liq) = 0.01205 ton(long)/yd³ = 0.0135 ton(short)/yd³
1 lb/gal(UK) = 0.8327 lb/gal(US liq) = 16 oz/gal(UK) = 13.323 oz/gal(US liq) = 168.179 lb/yd³ = 6.2288 lb/ft³ = 0.003605 lb/in3 = 0.05767 oz/in³= 99.7764 kg/m³ = 0.09977 g/cm³ = 0.07508 ton(long)/yd³ = 0.08409 ton(short)/yd³
1 lb/gal(US liq) = 1.2009 lb/gal(UK) = 19.215 oz/gal(UK) = 16 oz/gal(US liq) = 201.97 lb/yd³ = 7.4805 lb/ft³ = 0.004329 lb/in3 = 0.06926 oz/in³= 119.826 kg/m³ = 0.1198 g/cm³ = 0.09017 ton(long)/yd³ = 0.1010 ton(short)/yd³
1 lb/in³ = 1728 lb/ft³ = 46656 lb/yd³ = 16 oz/in³= 27680 kg/m³ = 27.680 g/cm³ = 277.419 lb/gal(UK) = 231 lb/gal(US liq) =4438.7 oz/gal(UK) = 3696 oz/gal(US liq) = 20.8286 ton(long)/yd³ = 23.3280 ton(short)/yd³
1 oz/gal(UK) = 0.8327 oz/gal(US liq) = 6.2360 kg/m³ = 6.2288 oz/ft³ = 0.3893 lb/ft³ = 10.5112 lb/yd³
1 oz/gal(US liq) = 1.2009 oz/gal(UK) = 7.4892 kg/m³ = 7.4805 oz/ft³ = 0.4675 lb/ft³ = 12.6234 lb/yd³
1 sl/ft³ = 515.3788 kg/m³ = 514.7848 oz/ft³ = 0.2979 oz/in³ = 32.1741 lb/ft³ = 82.645 oz/gal(UK) = 68.817 oz/gal(US liq)
1 ton(long)/yd³ = 1.12 ton(short)/yd³ = 1328.94 kg/m³ = 0.7682 oz/in³ = 82.963 lb/ft³ = 2240 lb/yd³ = 2.5786 sl/ft³ = 13.319 lb/gal(UK) = 11.0905 lb/gal(US liq)
1 ton(short)/yd³ = 0.8929 ton(long)/yd³ = 1186.55 kg/m³ = 0.6859 oz/in³ = 74.074 lb/ft³ = 2000 lb/yd³ = 2.3023 sl/ft³ = 11.8921 lb/gal(UK) = 9.9023 lb/gal(US liq)

Electric Charge

abcoulomb [aC], ampere hour [Ah], ampere second [As], coloumb [C], coulomb international [C(Int)], electrostatic unit of charge [esu], faraday (chemical)[F(chem)]

1 aC = 0.00278 Ah = 10 C = 6.24151x10¹⁹ esu = 1.03632x10^-4 F(chem) = 2.99792x10¹⁰ statcoulomb
1 Ah = 360 aC = 3600 C = 3600 As = 0.03731 F(chem)
1 As = 1 C = 0.00001036 F(chem) = 0.00027778 Ah
1 C = 1 As = 0.1 aC = 1.00015002 C(Int) = 0.000278 Ah = 1.0360x10^-5 F(chem) = 2.9979x10⁹ statcoulomb = 6.24151x10¹⁸ esu
1 F(chem) = 26.8 Ah = 96485.3 C

Electromotive Force, Voltage Difference

abvolt [abV] = abampere^.abohm [abA^.abΩ], microvolt [μV], millivolt [mV], statvolt [statV] = erg/electrostatic unit of charge [erg/esu], volt [V] = joule/coulomb [J/C],

1 abV = 0.01 μV = 1x10^-5 mV = 1x10^-8 V
1 μV = 100 abV = 1x10^-3 mV = 1x10^-6 V
1 mV = 1x10⁵ abV = 1000 μV = 1x10^-3 V
1 statV = 1 erg/esu = 299.792458 V
1 V = 1 J/C = 1x10⁸ abV = 1x10⁶ μV = 1000 mV = 0.00333564 statV

Energy, Heat, Work

Barrels of oil equivalent [bboe], Billion barrels of oil equivalent [BBOE], british thermal unit [Btu] = [BTU], calorie [cal] = International Table calorie [ITcal], standard cubic foot of natural gas [scf NG], kilocalorie [kcal], dyne centimeter [dyn cm] = erg [erg], electron volt [eV], foot pound force [ft lbf] = pound-force-foot [lbf ft], foot poundal [ft pdl], gram force metre [gf m], gram force centimetre [gf cm], kilogram-force metre [kgf m] = kilopond metre [kpm], horsepower hour [hp h], inch-ounce force [in ozf], inch-pound force [in lbf], joule [J], kilojoule[kJ], liter-atmosphere [l atm], newtonmeter [Nm], kilonewtonmeter [kNm], quad [quad], therm [thm], watt hour [Wh], kilowatt hour [kWh], watt second [Ws],

One cal (IT) (International Table) was defined by the Fifth International Conference on the Properties of Steam to be exactly 4.1868 J

1 bboe = 1.000349x10-9 BBOE = 5.8006x10⁶ Btu(IT) = 5800.6 scf NG = 6.12x10⁹ J
1 BBOE = 0.999650850x10⁹ bboe = 5.798615x10¹⁵ Btu(IT) = 5.798615x10¹² scf NG = 6.1178632x10¹⁸ J
1 Btu(IT) = 1.00053 Btu(ISO) = 0.9992289 Btu(mean) = 1.00067 Btu(thermochemical) = 1055.06 J = 1055.06 Ws = 108.258 kpm = 1.08258x10⁷ gf-cm = 2.93072x10^-4 kWh = 251.996 cal(IT)= 0.252 kcal(IT) = 778.194 ft lbf = 1.05506x10¹⁰ erg= 0.29307 Wh = 0.000393 hp h = 10.4126 l atm = 0.1724x10-6 bboe = 0.001 scf NG
1 Btu(ISO) = 0.999473 Btu(IT) = 0.998702 Btu(mean) = 1.00142 Btu(thermochemical) = 1054.5 J
1 Btu(mean) = 1.0007717 Btu(IT) = 1.012992 Btu(ISO) = 1.001442 Btu(thermochemical) = 1055.87 J
1 Btu(thermochemical) = 0.999327 Btu(IT) = 0.999856 Btu(ISO) = 0.998560 Btu(mean) = 1054.35 J
1 cal(IT) = 4.1868 J = 1.163x10^-6 kWh = 37.056 in lbf
1 cal(thermocemical) = 4.184 J
1 kcal(IT) = 4186.8 J = 426.9 kpm = 1.163x10^-3 kWh = 3.088 ft lbf = 3.9683 Btu = 1000 cal(IT) =
1 dyn cm = 1.00 erg = 1x10^-7 J
1 eV = 1.602x10^-19 J
1 erg = 1 dyn cm = 1 g cm²/s² = 10^-7 J = 6.2415x10¹¹ eV
1 ft lbf = 1.3558 J = 0.1383 kpm = 3.766x10^-7 kWh = 3.238x10^-4 kcal = 1.285x10^-3 Btu(IT)
1 ft pdl = 0.03108 ft lbf = 2.63x10¹⁸ eV = 0.042140 J = 0.010065 cal = 5.96752 in ozf
1 gf cm = 0.00001 kgf-m = 0.01389 in ozf = 0.00009807 Nm
1 hp h = 2.6846x10⁶ J = 0.7457 kWh
1 in ozf = 0.005208 ft lbf = 72.008 gf cm = 0.007062 Nm = 70616.6 dyn cm
1 in lbf = 0.026986 cal(IT) = 0.11298 J = 0.107089x10^-3 Btu(IT) = 0.31385x10^-9 kWh
1 J = 1 kg m²/s² = 1 Ws = 1 Nm = 0.1020 kpm = 2.778x10^-7 kWh = 2.390x10^-4 kcal(thermochemical) = 0.7376 ft lbf = 9.478x10^-4 Btu
1 kJ = 1 kNm = 1kWs = 0.000278 kWh = 10³ J = 0.947813 Btu = 737.6 ft lbf = 0.23884 kcal
1 kpm = 1 kgf m = 9.80665 J = 2.724x10^-6 kWh = 2.342x10^-3 kcal = 7.233 ft lbf = 9.295x10^-3 Btu
1 kWh = 3.6x10⁶ J = 3600 kJ = 3.671x10⁵ kpm = 859.9 kcal = 2.656x10⁶ ft lbf = 3.412x10³ Btu
1 Q = 10¹⁸ Btu = 1.055x10²¹ J
1 quad = 10¹⁵ Btu = 1.055x10¹⁸ J
1 scf NG (60°F, 14.7 psi/1.01 bar) = 1000 Btu (IT)
1 thm(e.c.) = 100,000 Btu(IT)

Energy per unit mass (Specific energy - mass)

british thermal unit(international table)/pound [Btu(IT)/lb], gigajoule/tonne [GJ/t], kilocalorie/kilogram [kcal/kg] = calorie/gram[cal/g], kilojoule/kilogram [kJ/kg] = joule/gram [J/g], kilowatt hour/kilogram [kWh/kg]

1 Btu(IT)/lb = 0.002326 GJ/t = 2.326 kJ/kg = 0.5559 kcal/kg = 0.000646 kWh/kg
1 cal/g = 1 kcal/kg = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
1 GJ/t = 1000 kJ/kg = 429.923 Btu(IT)/lb = 238.846 kcal/kg = 0.278 kWh/kg
1 J/g = 1 kJ/kg = 10^-3 GJ/t = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
1 kcal/kg = 1 cal/g = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
1 kJ/kg = 1 J/g = 10^-3 GJ/t = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
1 kWh/kg = 1547.7 Btu(IT)/lb = 3.6 GJ/t = 3600 kJ/kg = 860.421 kcal/kg

Energy per unit volume (Specific energy - volume)

british thermal unit(international table)/cubic foot [Btu(IT)/ft³], british thermal unit(international table)/gallon(US liquid) [Btu(IT)/gal(US liq)], british thermal unit(international table)/liter [Btu(IT)/l], joule/cubic meter [J/m³], kilocalorie/cubic metre [kcal/m³]

1 Btu(IT)/ft³ = 0.1337 Btu(IT)/gal(US liq) = 0.03531 Btu(IT)/l = 8.8992 kcal/m³ = 3.7259x10⁴ J/m³
1 Btu(IT)/gal(US liq) = 0.2642 Btu(IT)/l = 7.4805 Btu(IT)/ft³ = 66.6148 kcal/m³ = 2.7872x10⁵ J/m³
1 Btu(IT)/l = 3.78541 Btu(IT)/gal(US liq) = 28.3168 Btu(IT)/ft³ = 252.164 kcal/m³= 1.055x10⁶ J/m³
1 J/m³ = 2.684x10-5 Btu(IT)/ft³ = 3.5879x10^-6 Btu(IT)/gal(US liq) = 9.4782x10^-7 Btu(IT)/l = 2.388x10^-4 kcal/m³
1 kcal/m³ = 0.1124 Btu(IT)/ft³ = 0.01501 Btu(IT)/gal(US liq) = 0.003966 Btu(IT)/l = 4186.8 J/m³

Flow - see Volume flow

Force

dyne [dyn], kilogram force [kgf]=kilopond [kp], newton [N], ounce force [ozf] (avoirdupois), poundal [pdl], pound force [lbf], kilopound force [kipf]=[kip]=[klb]=[klbf]

1 dyn = 1 g cm/s² = 1x10^-5 N
1 kgf = 1 kp = 9.80665 N = 2.2046 lbf = 70.932 pdl
1 kip = 1000 lbf = 4448.2216 Newtons (N) = 4.4482216 kilonewtons (kN) = 453 kgf
1 kp = 1 kgf = 9.80665 N = 2.2046 lbf = 70.932 pdl
1 lbf = 16 ozf = 0.001 kip = 4.44822 N = 0.4536 kp = 32.174 pdl = 4.4482x10⁵ dyn
1 N = 1 kg m/s² = 1 J/m = 10⁵ dyn = 0.1020 kp = 0.1020 kgf = 1/9.80665 kgf = 7.233 pdl = 0.2248 lbf = 3.5969 ozf = 0.000225 kip
1 ozf = 1/16 lbf = 0.0625 lbf = 2.0109 pdl = 0.02835 kgf = 27801.39 dyn = 0.27801 N
1 pdl = 0.13826 N = 0.014098 kp = 0.03108 lbf

Frequency

hertz [Hz]= cycle/second [cps]

1 Hz = 1 cps

Heat flow rate

british thermal unit/hour [Btu/h], british thermal unit/second [Btu/s], foot-pound force/second [ft lbf/s], horsepower(Imperial) [hp(I)], horspower (metric) [hp(M)]=[hk], kilocalorie/hour [kcal/h], kilopond-meter/second [kpm/s], kilowatt [kW]=kilojoule/second [kJ/s], ton of refrigeration [ton of refrigeration], watt [W],

1 Btu/s = 1.0551 kW = 1055.1 W = 1.434 hk = 1.415 hp(I)= 107.586 kpm/s
1 Btu/h = 2.931x10^-4 kW = 0.0299 kpm/s = 0.252 kcal/h = 3.986x10^-4 hk = 3.939x10^-4 hp = 0.2163 ft lb/s
1 ft lbf/s = 1.35582 W = 0.00135582 kW = 0.1382 kpm/s = 1.165 kcal/h = 4.6262 Btu(IT)/h = 1.843x10^-3 hk = 1.818x10^-3 hp(I)
1 hk = 1 hp(M) = 0.735499 kW = 75.000 kpm/s = 632.4 kcal/h = 2510 Btu(IT)/h = 0.9863 hp(I) = 542.5 ft lb/s
1 hp(I) = 0.74570 kW = 76.04 kpm/s = 641.2 kcal/h = 2545 Btu(IT)/h = 1.014 hk = 550.3 ft lb/s
1 kcal/h = 1.163x10^-3 kW = 0.1186 kpm/s = 3.968 Btu(IT)/h = 1.581x10^-3 hk = 1.5596x10^-3 hp(I) = 0.85779 ft lb/s
1 kpm/s = 9.8067x10^-3 kW = 8.4322 kcal/h = 33.4615 Btu(IT)/h = 0.01333 hk = 0.01315 hp(I) = 7.233 ft lb/s
1 kW = 1 kJ/s = 1000 W = 1000 J/s = 3.6x10⁶ J/h = 102.0 kpm/s = 859.8 kcal/h = 3412 Btu(IT)/h = 1.3596 hk = 1.341 hp(I) = 737.6 ft lb/s
1 ton of refrigeration = 200 Btu(IT)/min = 3.51685 kW
1 W = 1x10^-3 kW = 0.23885 cal(IT)/s

Heat flux

british thermal unit/(square foot hour) [Btu/(ft² h)], kilocalorie/(square centimetre hour) [kcal/(cm² h)], watt/square metre [W/m²]

1 Btu/(ft² h) = 3.1525 W/m²= 0.000271 kcal/(cm² h)
1 kcal/(cm² h) = 11587 W/m² = 3690 Btu/(ft² h)
1 W/h = 0.3172 Btu/(ft2 h) = 8.63x10-5 kcal/(cm² h)

Heat generation per unit mass (Specific energy - mass)

1 Btu(IT)/lb = 0.002326 GJ/t = 2.326 kJ/kg = 0.5559 kcal/kg = 0.000646 kWh/kg
1 cal/g = 1 kcal/kg = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
1 GJ/t = 1000 kJ/kg = 429.923 Btu(IT)/lb = 238.846 kcal/kg = 0.278 kWh/kg
1 J/g = 1 kJ/kg = 10^-3 GJ/t = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
1 kcal/kg = 1 cal/g = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
1 kJ/kg = 1 J/g = 10^-3 GJ/t = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
1 kWh/kg = 1547.7 Btu(IT)/lb = 3.597 GJ/t = 3597.1 kJ/kg = 860.421 kcal/kg

Heat generation per unit volume (Specific energy - volume)

1 Btu(IT)/ft³ = 0.1337 Btu(IT)/gal(US liq) = 0.03531 Btu(IT)/l = 8.8992 kcal/m³ = 3.7259x10⁴ J/m³
1 Btu(IT)/gal(US liq) = 0.2642 Btu(IT)/l = 7.4805 Btu(IT)/ft³ = 66.6148 kcal/m³ = 2.7872x10⁵ J/m³
1 Btu(IT)/l = 3.78541 Btu(IT)/gal(US liq) = 28.3168 Btu(IT)/ft³ = 252.164 kcal/m³= 1.055x10⁶ J/m³
1 J/m³ = 2.684x10-5 Btu(IT)/ft³ = 3.5879x10^-6 Btu(IT)/gal(US liq) = 9.4782x10^-7 Btu(IT)/l = 2.388x10^-4 kcal/m³
1 kcal/m³ = 0.1124 Btu(IT)/ft³ = 0.01501 Btu(IT)/gal(US liq) = 0.003966 Btu(IT)/l = 4186.8 J/m³

Heat transfer coefficient

british thermal uni(international table/(square foot hour degree fahrenheit) [BTU(IT)/(ft² h°F)], kilocalorie/(square metre hour degree celcius) [kcal/(m2 h°C)], watt/(square metre degree kelvin) [W/(m² K)]

1 Btu/(ft² h°F) = 4.882 kcal/(m² h°C) = 5.678 W/(m² K)
1 kcal/(m² h°C) = 0.205 Btu/(ft² h°F) = 1.163 W/(m²K)
1 W/(m²K) = 0.1761 Btu/(ft² h°F) = 0.85984 kcal/(m²h°C)

Hydraulic Gradients

1 ftH₂O/100 ft = 0.44 psi/100 ft = 9.8 kPa/100 m = 1000 mmH₂O/100 m
1 psi/100 ft = 2.3 ftH₂O/100 ft = 2288 mmH₂O/100 ft = 22.46 kPa/100 m

Inductance

abhenry [abH]= Nanohenry [nH], henry [H] = ohm second [Ω s] = joule/square ampere [J/A²] = kilogram square metre/(square second square ampere) [kg m²/(s²A²)], microhenry [μH], millihenry [mH]

abH = 1 nH = 1x10^-9 H = 1x10^-6 mH = 1x10^-3 μH
1 H = 1x10³ mH = 1x10⁶ μH = 1x10⁹ abH
1 μH = 1x10^-6 H = 1x10^-3 mH = 1x10³ abH
1 mH = 1x10^-3 H = 1x10³ μH = 1x10⁶ abH

Information Storage

1 bit = 0.125 byte (computers)
1 byte = 8 bit

Length

cable [cable], caliber [caliber], centimeter [cm], chain(Gunter's) = chain(surveyors') [ch], chain(Ramsden's) = chain(engineers') [ch], cubit [cubit], fathom (nautical) [ftm], fermi = femtometer [fm], foot [ft], furlong [fur], hand [hh]=[hd], inch [in], kilometer [km], light year, metre [m], milli-inch = millesimus [mil] = thousands of an inch [thou], micrometer=micron [μm], millimicron [mμ], (Gunther's) link [li], mile [mi], nautical mile [NM]=[nmi]= seamile [sm], perch = pole = rod [rd], pica [pc], pixel [px] point (ATA system) [pt], yard [yd], ångstrom [Å]

Metre is the British, SI and elsewhere spelling of the unit of length equal to 100 cm. Meter is the American spelling of the same unit.

1 cable (International) = 1/10 nmi = ~100 ftm = 202.54 yd = 607.61 ft = 185.37 metre = 0.00167 degree latitude
1 cable length (US Survey) = 120 fathom = 240 yd = 720 ft = 219.46 meter = 729.14 caliber
1 caliber = 0.01 in = 0.254 mm = 10 mil
1 ch (Gunter's) = 1/10 fur = 100 li (Gunter's) = 22 yd = 198 hh = 66 ft = 1/80 mile = 0.660 Ramsden's ch = 4.00001 rod = 4.00001 pole = 2011.7 centimeter = 20.117 meter = 792 inch
1 ch (engineer's or Ramsden's) = 100 ft = 100 links = 30.48 m
1 cm = 10^-2 m = 0.3937 in = 0.03281 ft = 1x10⁸ Ångstrom = 0.03281 ft = 0.0984 hh = 0.3937 in = 1x10^-5 km = 0.0497 li = 0.000497 Gunter's ch = 0.0003281 Ramsden's ch = 10 000 μm = 10 000 micron = 5.3996x10^-6 [nmi] = 6.2137x10^-6 mi = 10 mm = 1x10⁷ mμ = 393.70 mil = 2.371 pc. = 28.3465 pt = 0.001988 rod (US Survey) = 0.01094 yard
1 cubit = 0.5 yd = 1.5 ft = 18 in = 0.4572 m = 45.72 cm
1 fm = 10^-15m
1 ft = 0.3048 m = 12 in = 0.3333 yd = 1.894x10^-4 mile = 30.48 cm = 304.8 mm
1 ft (U.S. Survey) = 1.000002 ft (International)
1 ft (International) = 0.999998 ft (U.S. Survey)
1 ftm = 2 yd = 6 feet = 1.828804 meters
1 fur = 660 ft = 40 rd = 1/8 mi
1 hh = 4 in = 4000 mil = 0.1016 m
1 in = 25.4 mm = 2.54 cm = 0.0254 m = 0.08333 ft = 0.02778 yd = 1.578x10^-5 mi = 0.25 hh
1 km = 0.621137 mi = 3280.83 ft = 1093.61 yds = 0.53996 nmi
1 land league = 3 miles
1 m = 3.28083 ft = 39.3701 in = 1.093613 yd = 6.2137x10^-4 mile
1 mil (Norway and Sweden) = 10 kilometres
1 mile = 1.6093 km = 1609.3 m = 63346 in = 5280 ft = 1760 yd
1 mm = 10^-3 m = 0.03937 in = 1000 micron
1 nmi = 1852 m = 1.151 mi = 6076.1 ft = 0.016667 degree of latitude
1 pc = 12 pt = 16 px = 0.42174 cm = 0.1660 in
1 pt = 1/12 pc = 0.0833 pc = 0.0352 cm = 0.01389 in = 13.89 mil
1 rd = 1 pole = 1 perch = 5.5 yd = 16 1/2 ft = 1/320 mi = 5.029 m
1 yd = 3 ft = 36 in = 0.9144 m = 5.682x10^-4 mile
1 Ångstrom = 1 Å = 10^-10 m = 1x10^-8 cm = 1x10^-4 μm = 0.0001 micron = 0.1 mμ = 3.937x10^-9 in

1 Astronomical Unit = Average Distance between the Earth and the Sun = 1.495978x10¹¹ m
1 parsec (pc) = the distance at which one AU would subtend a second of arc = 3.085678 x 10¹⁶ m = 3.261633 ly = 206265 AU
1 light year = 63241.08 Astronomical Units (AU) = 9.46053x10¹⁵ m = 5.8786x10¹² mile (US statute) = 0.306601 parsec

Luminous Emittance (Illuminance)

footcandle [fc], gigalux [Glx], Lux [lx], lumen/square centimetre [lm/cm²], lumen/square foot [lm/ft²], lumen/square inch [lm/in²], millilux [mlx] = nox [nox], phot [ph]

1 fc = 1 lm/ft² = 0.006944 lm/in² = 10.76391 lx = 0.107639x10^-9 Glx = 0.00107639 lm/cm²
1 Glx = 100 000 lm/cm² = 92.90304x10⁶ fc = 645160 lm/in²
1 lm/cm² = 1 ph = 1x10⁴ lx = 929.030 fc = 6.4516 lm/in²
1 lm/ft² = 1fc = 0.001076 lm/cm² = 10.76639 lx
1 lm/in² = 144 fc = 1550 lx = 0.1550003 lm/cm²
1 lx = 1000 mlx = 0.0001 lm /cm² = 0.0001 ph = 0.0929 fc = 0.0006452 lm/in²
1 mlx = 1 nox = 0.001 lx
1 nox = 1 mlx = 0.001 lx
1 ph = 1 lm/cm² = 1x10⁴ lx = 929.030 fc = 6.4516 lm/in²

Luminous Flux

candela steradian [cd sr], lumen [lm], lux square metre [lx m²]

1 cd sr = 1 lm = 1 lx/m²
1 lm = 1 cd sr = 1 lx/m²
1 lx/m² = 1 cd sr = 1 lm

Luminous Intensity

candlepower [cp]=[CP], candlepower(new) [cp(new)] = candela [cd] = lumen/steradian [lm/sr], Hefnerkerze [HK]=hefner candle, millicandelas [mcd], voille [voille]

1 cd = 1 cp(new) = 1 lm/sr = 1000 mcd = 1.01937 cp = 1.106968 HK
1 cp = 0.981 cp(new) = 0.981 cd = 0.981 lm/sr = 1.085935 HK = 0.04837 voille = 4π lumen = 12.566 lumen
1 HK = 0.90337 cd = 0.9337 lm/sr = 0.920865 cp
1 lm/sr = 1 cd = 1.01937 cp = 1.106968 HK
1 mcd = 0.001 cd
1 voille = 20.17 cd = 20.5606 cp = 21.9239 HK

Luminous Intensity Density

candela/square centimetre [cd/cm²] = (lumen/steradians)/square centimetre [lm/(sr cm²)], candela/square metre [cd/m²], lambert [L]=[Lb], (lumen/steradians)/square foot [lm/(sr ft²)],

1 cd/cm²= 1 lm/(sr cm²) = 10 000 1 cd/m² = 3.1416 Lb
1 cd/m² = 0.0001 lm/(sr cm²) = 0.0929 lm/(sr ft²) = 0.00031416 Lb
1 Lb = 1/π cd/cm² = 0.3183 cd/cm²= 3183.1 cd/m²

Magnetic Flux

gauss square centimetre [G cm²] = maxwell [Mw], magnetic flux quantum [Φ], milliweber [mWb], microweber [μWb], tesla square metre [T m²] = volt second [Vs] = weber [Wb]

1 G cm² = 1 Mw = 1x10^-8 Wb = 1x10^-8T m² = 1x10^-8Vs = 4.835979x10⁶ Φ
1 Mw = 1 G cm² = 1x10^-8 Wb = 1x10^-8T m² = 1x10^-8Vs = 4.835979x10⁶ Φ
1 mWb = 0.001 Wb = 1x10⁵ Mw = 4.84x10¹¹Φ
1 μWb = 1x10^-6 Wb = 100 Mw
1 Φ = 2.067834x10^-7Mw = 2.067834x10^-7G cm²= 2.067834x10^-15 Vs = 2.067834x10^-15 Wb = 2.067834x10^-15T m²
1 T m² = 1 Vs = 1 Wb = 4.84×10¹⁴ Φ = 1x10⁸ Mw = 1x10⁸ G cm²
1 Vs = 1 T m² = 1 Wb = 4.84×10¹⁴ Φ = 1x10⁸ Mw = 1x10⁸ G cm²
1 Wb = 1 T m² = 1 Vs = 1000 mWb = 1x10⁶ μWb = 4.84×10¹⁴ Φ = 1x10⁸ Mw = 1x10⁸ G cm²

Magnetic Flux Density

gamma-flux=gamma [γ], gauss [G]=[Gs] = maxwell/square centimeter [Mw/cm²] = line/square centimetre [line/cm²] = gilbert/centimeter [Gb/cm] , kilogram/(ampere square second) [kg/(A s²)] = tesla [T]

1 γ = 1x10^-5 G = 1x10^-9 T
1 G = 1 Mw/cm² = 1 Gb/cm = 1 line/cm² = 1x10⁵ γ = 1x10^-4 T = 6.4516 line/in² = 1x10^-8 Wb/cm² = 6.452x10^-8 Wb/in²

Magnetic Force

gilbert [Gb], ampere-turn [At]

1 gilbert = 0.79577 At
1 At = 4π/10 Gb = 1.2566 Gb

Magnitude of a Physical Quantity (Power or intensity relative to a specified or implied reference level)

1 bel = 10 decibel
1 decibel = 0.1 bel

Mass, Weight

atomic mass [u], carat [ct], cental=centum weight=quintal=hundredweight (short) [cwt], dram [dr], grain = grain (troy) [gr], gram [g], hectogram [hg], hundredweight (long) = hundredweight (imperial) [cwt], kilogram [kg], kilopound [kip], ounce (International avoirdupois) [oz], ounce (troy) [ozt]=ounce (apothecary), pennyweight=denarius weight [dwt]=[pwt]=[PW], pound (International avoirdupois) [lb] = pound mass [lbm], pound (apothecary) [lb(apothecary)]=pound (troy) [lbt] , scruple [scruple], slug [sl], stone=stone weight [st], ton (long)= ton(UK) = ton [ton], ton (short)=ton(US) [ton], tonne = ton (metric) [t]

1 ct(metric) = 0.2 gram = 200 milligram = 3.0865 gr = 0.11288 dr = 0.05144 dr (apothecary)
1 cwt(long/Imperial) = 8 stone = 112 lb = 50.8023 kg
1 cwt(short/US) = 1 cental = 100 pound = 45.359 kilogram
1 dr = 0.45573 dr(apothecary) = 0.0625 oz = 0.003906 lb
1 dr(apothecary) = 3 scruples(apothecary) = 2.194 dr
1 dwt = 24 gr = 1/20 ozt, 1/240 troy pound = 1.55517 g
1 g = 1/1000 kg = 15.432 gr = 0.03527 oz = 0.002205 lb
1 gr = 0.05 scruple = 0.000143 lb = 0.000174 lbt = 0.0648 g
1 hg = 100 g = 0.2205 lb = 3.53 oz
1 kg = 1000 g = 2.2046 lb = 0.1575 st = 6.8521x10^-2 sl
1 kip = 0.5 ton (short) = 10 cwt (short) = 1000 lb = 16000 oz = 7x10⁶ gr = 0.45359 t = 453.59 kg
1 lb = 16 oz = 0.4536 kg = 453.6 g = 7000 gr = 0.03108 sl = 1.2153 lbt
1 lb(apothecary) = 1 lbt = 0.82286 lb = 12 oz (apothecary) = 12 ozt = 13.166 oz = 5760 gr = 0.37324 kg = 373 g
1 lbt = 1 lb(apothecary) = 0.82286 lb = 12 oz (apothecary) = 12 ozt = 13.166 oz = 5760 gr = 0.37324 kg = 373 g
1 oz = 16 dram = 28.35 g = 437.5 gr = 0.0625 lb = 0.0000279 long ton (Imperial) = 0.00003125 long ton (US) = 0.000558 cwt long (Imperial) = 0.000625 cwt short (US)
1 oz(apothecary) = 1 ozt = 8 dr = 1/12 pound (apothecary) = 31.1 g
1 ozt = 1/12 pound (troy)= 31.1034768 g = 480 gr
1 scruple = 1/24 oz = 0.04571 oz = 1/3 dr = 20 gr = 1.29598 g = 6.4799 ct
1 sl = 14.594 kg = 32.174 lb
1 st = 14 lb = 224 oz = 6.35029 kg
1 t = 0.9842 long ton (Imperial) = 1.10231 short ton (US) = 1000 kg = 10⁶ g = 10⁹ mg
1 ton (long) = 1 ton(UK) = 20 cwt (long) = 2240 lb = 160 st = 22.4 cwt (short) = 1,016.0469088 kg
1 ton (short) = 1 ton(UK) = 20 cwt (short) = 2000 lb = 2 kip = 32 000 oz = 907.18474 kg

1 u = 1/12 atomic mass units of with the carbon-12 atom (definition of atomic mass) = 1.66054 x 10^-27 kg = 931.494 MeV

1 Gal. H₂O = 8.33 Lbs. H₂O
Density, Specific Weight and Specific Gravity - An introduction and definition of density, specific weight and specific gravity. Formulas with examples.

Mass (Weight) flow rate

kilogram/hour[kg/h], kilogram/second [kg/s], pound/hour [lb/h], pound/minute [lb/min], pound/second [lb/s], ounce/minute [oz/min], ounce/second [oz/s], tonne/day [t/d]

1 kg/h = 0.016667 kg/min = 2.778x10^-4 kg/s = 0.024 t/d = 2.20462 lb/h = 3.67x10^-2 lb/min = 0.5879 oz/min
1 kg/s = 3,600 kg/h = 60 kg/min = 86.4 t/d = 2.20462 lb/s = 132.28 lb/min = 35.27396 oz/s
1 lb/h = 0.016667 lb/min = 0.26667 oz/min = 1.26x10^-4 kg/s = 0.4536 kg/h = 0.01089 t/d
1 lb/min = 0.01667 lb/s = 16 oz/min = 7.56x10^-3 kg/s = 0.4536 kg/min 0.6532 t/d = 27.216 kg/h
1 lb/s = 60 lb/min = 3600 lb/h = 16 oz/s = 0.4536 kg/s = 39.1904 t/d
1 oz/min = 0.01667 oz/s = 3.75 lb/h = 0.02835 kg/min = 1.7 kg/h = 0.0408 t/d
1 oz/s = 60 oz/min = 3600 oz/h = 0.0625 lb/s = 0.0283 kg/s = 2.45 t/d = 102.058 kg/h
1 t/d = 0.0116 kg/s = 41.6667 kg/h = 0.02552 lb/s = 1.5310 lb/min = 91.8593 lb/h = 24.4958 oz/min = 0.40826 oz/s

Mass (Weight) per unit Area

pound/square foot [lb/ft²], kilogram/square metre [kg/m²]

1 lb/ft² = 4.8824 kg/m²
1 kg/m² = 0.2048 lb/ft²

Mass (Weight) per unit Length

pound/foot [lb/ft], kilogram/metre [kg/m]

1 lb/ft = 1.49 kg/m
1 kg/m = 0.67 lb/ft

Mass (Weight) per unit Volume

pound/cubic foot [lb/ft³], kilogram/cubic meter [kg/m³]

1 lb/ft³= 16 kg/m³
1 kg/m³ = 0.062 lb/ft³

Molar

molar [M] = mole/liter solution [mol/l]

1 M = 1 mol/l

Mole

Mole [mol], kilomole [kmol], decimole [dmol], centimole[cmol], millimole [mmol], pound-mole [lb-mol]

1 kmol = 1000 mol = 2.2046 lb-mol
1 lb-mol = 0.45359 kmol
1 mol = 0.001 kmol = 10 dmol = 100 cmol = 1000 mmol = 6.0221415 10²³ atom = 6.0221415 10²³ molecule = number of atoms in 12 grams of carbon-12(¹²C)-isotop
Avogadros constant = 6.0221415 10²³

Moment of Inertia

Moment of Inertia
1 kg m² = 10000 kg cm² = 54675 oz in² = 3417.2 lb in²= 23.73 lb ft²

Nautical Measure

cable length [cable], fathom [fathom], foot [ft], inch [in], kilometer/hour [km/h], knot [knot]=nautical mile/hour [nmi/h], metre [m], metre/second [m/s], mile (US, Imperial) [mi], nautical leage [NL]=[nl], meter [m], nautical mile [NM]=[nmi] = sea mile, yard [yd]

1 cable = 1 nmi/10 = 0,1 nmi = 185.2 m
1 fathom = 2 yd = 6 ft = 72 in = 1.8288 m
1 knot (nautical unit of speed) = 1 nmi/h = 1.852 km/h = 0.5144 m/s
1 league = 3 nmi = 5556 m
1 nmi = 10 cable = 6076.11 ft = 1.1508 mi = 1852 m

one degree at the equator = 60 nautical miles = 69.047 miles
360 degrees = 21600 nautical miles = 24856.8 statute miles = circumference at equator

Power

british thermal unit/second [Btu/s]=[BTU/s], british thermal unit/hour [Btu/h]=[Btuh], calorie/second [cal/s], erg/second [erg/s], foot pound-force/second [ft lbf/s], horsepower = cheval vapeur [hp], horsepower (boiler) [hp(S)], horsepower (electric) [hp(E)], horsepower (metric) [hp(M)], horsepower (mechanical=hydraulic=brake =Imperial) [hp(I)]=[bhp], horsepower (water) [WHP], joule/s [J/s], kilocalorie/second [kcal/s], kilogram-force meter/second [kgf m/s], kilowatt [kW], thousand British Thermal Units/hour [MBH], volt-ampere [VA], watt [W],

1 kW = 1000 W = 3412 Btu/h = 737.6 ft lbf/s = 1.3596 hp(M) (ps) = 1.341 hp(I) (bhp) = 101.97 kgf m/s = 737.6 ft lbf/s
1 Btu/s = 1055.1 W = 0.251997 kcal/s = 1.4345 hp(M)
1 Btu/h = 1 Btuh = 0.001 MBH = 0.2931 W = 0.2520 kcal/h = 0.2931 J/s = 0.2162 ft lbf/s
1 cal/s = 4.187 W = 4.187 J/s = 0.005692 hp(M)
1 ft lbf/s = 1.3558 W = 0.3238 cal/s = 1.1658 kcal/h
1 hp(E) = 746 W = 0.07606 hp(S) = 1.0004 hp(I) = 1.0143 hp(M) = 2545.45 Btu/h = 641 446 cal/h = 7.46x10⁹ erg/s = 550.222 ft lbf/s = 0.7460 kW
1 hp(I) = 550 ft lbf/s = 0.07603 hp(S) = 0.9995 hp(E) = 1.0139 hp(M) = 745.7 W = 0.7457 kW = 2544.42 Btu/h = 641 186 cal/h = 7.46x10⁹ erg/s
1 hp(M) = 75 kgf m/s = 0.07499 hp(S) = 0.98592 hp(E) = 0.98632 hp(I) = 735.499 W = 0.7355 kW = 2509.6 Btu/h = 632 416 cal/h = 7.35x10⁹ erg/s = 542.477 ft lbf/s
1 hp(S) = 33 475 Btu/h = 13.147 hp(E) = 13.153 hp(I) = 13.335 hp(M) = 9807.9 W = 9.8079 kW = 33 0465 Btu/h = 8.433x10⁶ cal/h = 98.08x10⁹ erg/s = 7233.9 ft lbf/s
1 J/s = 1 W = 10x10⁶ erg/s = 0.001 kW = 0.8598 kcal/h = 0.10197 kgf m/s = 3.412 Btu/h = 0.0009478 Btu/s = 0.7375 ft lbf/s
1 kcal/s = 4.1868 kW = 4186.8 W = 1000 cal/s = 426.9 kgf m/s = 4187 J/s = 3.968 Btu/s
1 kgf m/s = 9.807 W = 9.807 J/s = 2.342 cal/s = 0.01333 hp(M) = 7.233 ft lbf/s
1 MBH = 1000 Btu/h
1 W = 1 J/s = 1 kg m²/s³ = 1 Nm/s = 10x10⁶ erg/s = 0.8598 kcal/h = 0.10197 kgf m/s = 3.412 Btu/h = 0.0009478 Btu/s = 0.7375 ft lbf/s
1 WHP = = 550.25 ft lbf/s = 0.07605 hp(S) = 1.00006 hp(E) = 1.00046 hp(I) = 1.01434 hp(M) = 0.746043 kW

1 cooling tower Ton = 15000 Btu/h = 3782 k Calories/h
1 refrigeration Ton = 12000 Btu/h cooling = 3.51

Power per unit area

(british thermal unit(international table)/hour)/square foot [Btu(IT)/(h ft²)], (kilocalorie(international table)/h)/square metre [kcal(IT)/(h m²)], watt/square metre [W/m²]

1 Btu(IT)/(h ft²) = 2.7126 kcal(IT)/(h m²) = 3.1546 W/m²
1 kcal(IT)/(h m²) = 0.3687 Btu(IT)/(h ft²) = 1.1630 W/m²
1 W/m² = 0.3170 Btu/(h ft²) = 0.85984 kcal/(h m²)

Pressure

atmosphere [atm], bar [bar], barye [Ba] (French), centimeters of mercury at given temperature [cm Hg], centimeter of water at given temperature [cm H₂O], dyne/centimeter²[dyn/cm²], foot of water at given temperature [ft H₂O], gram-force/centimeter² [gf/cm²], inch of mercury at given temperature [in Hg], inch of water (gauge) at given temperature [igw], inch of water column at given temperature [in wc] or [wc], kgram force/centimeter²[kgf/cm²], kgram force/meter²[kgf/m²]=kilopond/meter²[kp/m²] , meter of water at given temperature [m H₂O], millimeter of mercury at given temperature [mm Hg], newton/meter² [N/m²], ounce/square inch [oz/in²], pascal [Pa], pound-force/square foot[lbf/ft²]=[psf], pound-force/square inch [lbf/in²]=[psi], torr [Torr]

1 atm = Standard Atmospheric Pressure (Imperial and USA systems of units) = 1.01325 bar = 101.325 kN/m² = 101.325 kPa = 760 Torr=mm Hg at 0°C/32°F = 29.92 in Hg at 0°C/32°F = 14.696 psi = 0 psig = 33.899 ft H₂O at 4°C/39°F = 10.33 m H₂O at 4°C/39°F = 406.8 igw at 4°C/39°F = 2116.2 lb_f/ft²= 1.033x10⁴ kp/m²
1 bar = Standard Atmospheric Pressure (IUPAC system) = 0.98692 atm = 1000 mbar = 1x10⁵ Pa (=N/m²) = 0.1 N/mm² = 1x10⁶ Ba (French) = 10197 kp/m² = 10.197 m H₂O at 4°C/39°F = 14.5038 psi (=lbf/in²) = 1x10⁶ dyn/cm² = 750 mmHg at 0°C/32°F = 29.530 in Hg at 0°C/32°F = 75.0062 cm Hg at 0°C/32°F = 33.455 ft H₂O at 4°C/39°F = 1019.72 gf/cm² = 1.01972 kg_f/cm² = 2088.54 lb_f/ft² (=psf)
1 Ba (French) = 1.0 dyn/cm² = 0.10 N/m² = 0.10 Pa
1 dyn/cm² = 14.504x10^-6 lb_f/in² = 1x10^-6 bar = 0.000750 Torr
1 ft H₂O at 4°C/39°F = 0.4335 psi (lb_f/in²) = 62.43 lb_f/ft² = 2989 Pa
1 in Hg at 0°C/32°F = 3 386.4 N/m²= 0.4911 lbf/in² = 13.59 igw at 4°C/39°F
1 in H₂O at 4°C/39°F = 1 igw = 249.09 N/m²(Pa) = 0.0361 lb_f/in² = 25.4 kg_f/m² = 0.07356 in Hg at 0°C/32°F
1 kp/m²= 1 kg_f/m² = 1 mm H₂O at 4°C/39°F = 10^-3 m H₂O at 4°C/39°F = 0.0394 in H₂O at 4°C/39°F = 0.0736 mm Hg at 0°C/32°F = 9.807 Pa (N/m²) = 9.807x10^-6 N/mm² = 0.9678x10^-4 atm = 1.422x10^-3 psi
1 ksi = 1000 psi
1 mm Hg at 0°C/32°F = 1 Torr = 0.01934 lb_f/in² = 0.0193 psi = 0.00133 bar = 0.00132 atm = 13.56 mm H₂O at 4°C/39°F
1 m H₂O at 4°C/39°F = 1000 kp/m² = 9806.7 Pa = 9.807x10^-3 N/mm² = 0.0987 bar = 0.09678 atm = 1.422 psi
1 mm H₂O at 4°C/39°F = 1 kg_f/m² = 9.81 Pa = 0.0736 mm Hg at 0°C/32°F = 0.9678x10^-4 atm
1 oz/in² = 1.73 igw at 4°C/39°F = 0.1273 in Hg at 0°C/32°F = 430.92 Pa
1 Pa = 10^-6 N/mm² = 10^-5 bar = 0.1020 kp/m² = 1.020x10^-4 m H₂O at 4°C/39°F = 9.869x10^-6 atm = 0.004 in H₂O= 1.450x10^-4 psi (lb_f/in²) = 0.02089 lb_f/ft² (psf)
1 psf (lb_f/ft²) = 47.88 N/m² (Pa) = 0.006944 psi
1 psi (lb_f/in²) = 0.001 ksi = 144 psf = 6894.8 Pa (N/m²) = 6.895x10^-3 N/mm² = 0.06895 bar = 27.68 in H₂O at 4°C/39°F = 2.307 ft H₂O at 4°C/39°F = 703.1 mm H₂O at 4°C/39°F = 2.036 in Hg at 0°C/32°F = 51.71 mm Hg at 0°C/32°F = 703.1 kgf/m² = 0.06805 atm = 16 oz/in²

Note! When using pressure units based on liquid columns (like mm H₂O, in H₂O, mm Hg ...) - be aware that densities of liquids varies with temperature. For more exact conversions consult temperature density sources for the actual liquids.

Radioactivity

becquerel [Bq]=radioactive disintegration/second, curie [Ci], disintegration/minute [dpm], Gigabecquerel [GBq], microcurie [μCi], rutherford [Rd]

1 Bq = 1x10^-9 GBq = 1x10^-6 Rd = 2.7027x10^-11 Ci = 2.7027x10^-5 μCi = 60 dpm
1 Ci = 1x10⁶ μCi = 3.70x10¹⁰ Bq = 37 GBq = 3.70x10⁴ Rd = 2.22x10¹² dpm
1 dpm = 0.01667 Bq= 1.667x10^-11 GBq = 1.667x10^-8 Rd = 4.5045x10^-13 Ci = 4.5045x10^-7 μCi
1 GBq = 1x10⁹ Bq = 1000 Rd = 0.027027 Ci = 27027 μCi = 60 x 10⁹ dpm
1 μCi = 1x10^-6 Ci = 3.70x10¹⁶ Bq = 3.70x10⁷ GBq = 3.70x10¹⁰ Rd = 2.22x10¹⁸ dpm
1 Rd = 1x10⁶ Bq = 0.001 GBq = 2.7027x10^-5 Ci = 27.027 μCi = 60x10⁶ dpm

Radiation - Absorbed Dose

erg/gram [erg/g], gray [Gy], adsorbed radiation dose [rad], joule/kilogram [J/kg], milligray [mGy], røntgen equivalent physical [rep]=parker [parker]

1 erg/g = 1x10-4 Gy = 0.1 mGy = 0.01 rad
1 Gy = 1 J/kg = 100 rad = 1000 mGy = 10 000 erg/g
1 rad = 0.010 Gy = 100 erg/g
1 rep = 83 or 93 erg/g = 8.3 or 9.3 mGy (definition has varied over time)
1 mGy = 0.001 Gy = 0.1205 or 0.1075 rep

Radiation - Exposure

ampere second/kilogram [A s/kg], coulomb/kilogram [C/kg], røntgen(/roentgen) [R]= =german unit of radiation [german R]=tissue roentgen, french roentgen [french R]

1 R = 0.000258 C/kg = 0.000258 A s/kg = 2.2522 french R
1 C/kg = 1 A s/kg = 3875.97 R
1 french R = 0.444 german R = 0.000115 C/kg

Radiation - Dose Equivalent

microsievert [μSv], milli roentgen equivalent man [mrem], roentgen equivalent man [rem], sievert [Sv]=joule/kilogram [J/kg]

1 μSv = 1x10-6 Sv = 1x10-4 rem = 0.1 mrem
1 mrem = 10 μSv = 0.001 rem = 1x10^-5 Sv
1 Sv = 1 J/kg = 1x10⁶ μS = 100 rem = 1x10⁵ mrem
1 rem = 10000 μSv = 1000 mrem = 0.01 Sv

Resistance, Electrical

abohm [abΩ], megaohm [MΩ], microohm [μΩ], ohm [Ω]=volt/ampere [V/A],

1 abΩ = 1x10^-15 MΩ = 1x10^-3 μΩ = 1x10^-9 Ω
1 μΩ = 1000 abΩ = 1x10^-12 MΩ = 1x10^-6 Ω
1 MΩ = 1x10¹² μΩ = 1x10⁶ Ω = 1x10¹⁵ abΩ
1 Ω = 1 V/A = 1x10⁶ μΩ = 1x10^-6 MΩ = 1x10⁹ abΩ

Rotation

degree/minute [deg/min], degree/week [deg/w], hertz [Hz], radians/hour [rad/h], radians/minute [rad/min], radians/second [rad/s], revolutions/day [r/d], revolutions/minute [rpm]=[RPM]=[r/min]=[rev/min] = tours par minute (french) [tr/min] = Umdrehungen pro Minute [U/min], revolutions per second [r/s]=cycle/second [cps]

1 deg/min = 0.043 Hz = 0.01745 rad/min = 1.047 rad/h = 0.002778 rpm = 4 r/d = 10 080 deg/w
1 deg/w = 99.21x10^-6 deg/min
1 Hz = 1 r/s = 1 cps = 60 rpm = 2π rad/s = 6.28 rad/s = 22619 rad/h = 360 deg/s
1 r/d = 6.94x10^-4 rpm = 0.00417 deg/s
1 r/min = 1 rpm = 1/60 r/s = 0.01667 r/s = 0.105 rad/s = 6 deg/s = 360 deg/min = 1440 r/d
1 r/s = 1 Hz = 1 cps = 60 rpm = 2π rad/s = 6.28 rad/s = 360 deg/s
1 rad/h = 4.42x10^-5 Hz = 2.65x10^-3 rpm = 0.9549 deg/min
1 rad/min = 0.00263 Hz = 0.1591 rpm = 57.2958 deg/min
1 rad/s = 1/(2π) r/s = 0.159 cps = 9.549 rpm = 57.30 deg/s

Section Modulus

cubic centimetre [cm³], cubic foot [ft³], cubic inch [in³], cubic metre [m³]

Elastic Section Modulus
1 cm³ = 10^-6 m³ = 3.531x10^-5 ft³ = 0.061023 in³
1 m³ = 10⁶ cm³ = 35.31466 ft³ = 61023.76 in³
1 ft³ = 0.02832 m³ = 28372 cm³ = 1728 in³
1 in³ = 1.6387x10^-5 m³ = 16.387 cm³ = 5.78 10^-4 ft³

Sound pressure level

bel [B], decibel(sound pressure level) [dB SPL], neper [Np], pascal (root mean square sound pressure) [Pa]

1 B = (1/2)*ln10 Np = 1.15129 Np
1 dB SPL = (1/20)*ln10 Np = 0.11529 Np
1 Np = 8.68589 dB
0.02 Pa = 60 dB
1 Pa = 94 dB SPL
200 Pa = 140 dB SPL

Specific Heat

british thermal unit/(pound degree fahrenheit) [Btu/(lb°F)] = kilocalorie/(kilogram degree celcius) [kcal/(kg°C)], joule/(kilogram degree kelvin) [J/(kgK)], kilocalorie/(pound degree fahrenheit) [kcal/(lb°F)], kilojoule/(kilogram degree kelvin) [kJ/(kgK)]=kilojoule/(kilogram degree celcius) [kJ/(kg°C)], kilowatthour/(kilogram degree kelvin) [kWh/(kg K)]

1 Btu/(lb °F) = 1 Btu/(lb °R) = 1 kcal(IT)/(kg °C) = 1 kcal(IT)/(kg K) = 4186.8 J/(kg K) = 0.81647 kcal(IT)/(lb °F) = 1.163x10^-3 kWh/(kg K)
1 J/(kg K) = 1 J/(kg °C) = 2.3885x10^-4 kcal(IT)/(kg ^oC) = 2.3885x10^-4 Btu/(lb °F) = 1.9501x10^-4 kcal(IT)/(lb °F)
1 kcal(IT)/(kg °C) = 1 Btu/(lb °F) = 4186.8 J/(kg K) = 0.81647 kcal(IT)/(lb °F)
1 kcal(IT)/(lb °F) = 1.2248 Btu/(lb °F) = 1.2248 kcal(IT)/(kg °C) = 5127.9 J/(kg K)
1 kJ/(kg K) = 1 kJ/(kg °C) = 1000 J/(kg K) = 1000 J/(kg °C) = 0.23885 kcal(IT)/(kg °C) = 0.23885 Btu/(lb °F) = 0.19501 kcal(IT)/(lb °F) = 2.7778x10^-4kWh/(kg K)
1 kWh/(kg K) = 0.85985 kcal(IT)/(kg °C) = 0.85985 Btu/(lb °F) = 3.6 kJ/(kg K)

Specific Energy (mass)

1 Btu(IT)/lb = 0.002326 GJ/t = 2.326 kJ/kg = 0.5559 kcal/kg = 0.000646 kWh/kg
1 cal/g = 1 kcal/kg = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
1 GJ/t = 1000 kJ/kg = 429.923 Btu(IT)/lb = 238.846 kcal/kg = 0.278 kWh/kg
1 J/g = 1 kJ/kg = 10^-3 GJ/t = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
1 kcal/kg = 1 cal/g = 0.0041868 GJ/t = 4.1868 kJ/kg = 1.8 Btu(IT)/lb = 0.001162 kWh/kg
1 kJ/kg = 1 J/g = 10^-3 GJ/t = 0.23885 kcal/kg = 0.4299 Btu(IT)/lb = 0.0002778 kWh/kg
1 kWh/kg = 1547.7 Btu(IT)/lb = 3.597 GJ/t = 3597.1 kJ/kg = 860.421 kcal/kg

Specific Energy (volume)

1 Btu(IT)/ft³ = 0.1337 Btu(IT)/gal(US liq) = 0.03531 Btu(IT)/l = 8.8992 kcal/m³ = 3.7259x10⁴ J/m³
1 Btu(IT)/gal(US liq) = 0.2642 Btu(IT)/l = 7.4805 Btu(IT)/ft³ = 66.6148 kcal/m³ = 2.7872x10⁵ J/m³
1 Btu(IT)/l = 3.78541 Btu(IT)/gal(US liq) = 28.3168 Btu(IT)/ft³ = 252.164 kcal/m³= 1.055x10⁶ J/m³
1 J/m³ = 2.684x10-5 Btu(IT)/ft³ = 3.5879x10^-6 Btu(IT)/gal(US liq) = 9.4782x10^-7 Btu(IT)/l = 2.388x10^-4 kcal/m³
1 kcal/m³ = 0.1124 Btu(IT)/ft³ = 0.01501 Btu(IT)/gal(US liq) = 0.003966 Btu(IT)/l = 4186.8 J/m³

Specific Volume

cubic foot/pound [ft³/lb], cubic inch/pound [in³/lb], cubic metre/kg [m³/kg], gallon(US)/pound [gal(US)/lb], gallon(UK)/pound [gal(UK)/lb], liter/kilogram [l/kg]

1 ft³/lb = 1728 in³/lb = 7.4805 gal(US)/lb = 6.22884 gal(UK)/lb = 62.43 liter/kg = 0.062 m³/kg
1 gal(UK)/lb = 1.2010 gal(US)/lb = 0.16054 ft³/lb
1 gal(US)/lb = 0.83267 gal(UK)/lb = 0.134 ft³/lb = 231 in³/lb= 8.35 l/kg = 0.0083 m³/kg
1 in³/lb= 0.00058 ft³/lb = 0.0043 gal(US)/lb = 0.036 liter/kg = 0.000036 m³/kg
1 l/kg = 0.01602 ft³/lb = 27.7 in³/lb = 0.12 gal(US)/lb = 0.001 m³/kg
1 m³/kg = 1000 l/kg = 16.02 ft³/lb = 27680 in³/lb = 119.8 gal(US)/lb = 99.7764 gal(UK)/lb

Stress

1 psi (lb/in²) = 144 psf (lb_f/ft²)= 6894.8 Pa (N/m²) = 6.895x10^-3 N/mm²
1 N/m² = 1 Pa = 10^-6 N/mm² = 1.4504x10^-4 lb/in²

Surveyor's Measure

chain [chain], foot[ft], furlong [furlong], hand [hand], inch [in], leage [leage], link [link], metre [m], mile [mi], rod[rd], yard [yd]

1 chain = 4.17x10^-3 leage = 0.1 furlong = 0.0125 mi = 4 rd = 22 yd = 66 ft = 100 link = 198 hand = 20.1168 m
1 ft = 1/660 furlong = 0.00152 furlong = 1/66 chain = 0.01515 chain = 1.5151 link = 3 hand = 12 in = 0.3048 m
1 furlong = 1/8 mi = 0.125 mi = 10 chain = 40 rd = 220 yd = 660 ft = 1000 link = 201.168 m
1 hand = 0.0051 chain = 0.0202 rd = 0.1111 yd = 0.3333 ft = 0.5051 link = 4 in = 0.1016 m
1 leage = 3 mi = 24 furlong = 240 chain = 960 rd = 5280 yd = 4828.03 m
1 link = 0.001 furlong = 0.01 chain = 0.04 rd = 0.22 yd = 0.66 ft = 1.98 hand = 7.92 in = 0.2012
1 m = 0.0006214 mi = 0.004971 furlong = 0.04971 chain = 0.19884 rd = 1.0936 yd = 3.2808 ft = 4.9710 link = 9.8425 hand = 39.370 in
1 mi = 1/3 leage = 8 furlong = 80 chain = 320 rd = 1760 yd = 5280 ft = 15840 hand = 63360 in = 1609.34 m
1 rd = 1/40 furlong = 0.025 furlong = 0.25 chain = 5.5 yd = 16.5 ft = 25 link = 49.5 hand = 198 in = 5.0292 m
1 yd = 1/22 chain = 0.04545 chain = 0.18182 rd = 3 ft = 4.5454 link = 9 hand = 36 in = 0.9144 m

Temperature

temperature

celsius = degrees centigrade [°C], degrees fahrenheit [°F], kelvin [K], degrees rankine [°R]

0 °C corresponds to 32 °F, 273.16 K and 491.69 °R
0 °F corresponds to -17.78 °C, 255.37 K and 459.67 °R
0 K corresponds to -273.15 °C, -459.67 °F, and 0 °R
0 °R corresponds to -273.15°C, -459.67 °F, and 0 K

T_°C = (T_°F - 32)/1.8
T_°C = T_K - 273.15
T_°F = T_°C*1.8 + 32
T_°F = (T_K - 273.15)*1.8 + 32
T_K = T_°C + 273.15
T_K = T_°R/1.8
T_°R= T_°F + 459.67
T_°R = 1.8 K

Temperature difference:

ΔT_°C = ΔT_K = 1.8*ΔT_°F = 1.8*ΔT_°R
ΔT_°F = ΔT_°R= ΔT_°C/1.8 = ΔT_K/1.8
ΔT_K = ΔT_°C= 1.8*ΔT_°F = 1.8*ΔT_°R
ΔT_°R = ΔT_°F = ΔT_°C/1.8 = ΔT_K/1.8

Note that °C is used for actual temperatures and C° is used for temperature differences.

Thermal Conductivity

british thermal unit(international)/(foot hour degree fahrenheit) [Btu(IT)/(ft h°F], british thermal unit(international)/(inch hour degree fahrenheit) [Btu(IT)/(in h°F], british thermal unit(international)*inch/(square foot*hour*degree fahrenheit) [(Btu(IT) in)/(ft² h°F)], kilocalorie/(metre hour degree celcius) [kcal/(m h°C)], joule/(centimetre second degree kelvin) [J/(cm s K)], watt/(metre degree kelvin) [W/(m°C)],

1 Btu(IT)/(ft h°F) = 1/12 Btu(IT)/(in h°F) = 0.08333 Btu(IT)/(in h°F) = 12 Btu(IT)in/(ft² h°F) = 1.488 kcal/(m h°C) = 0.01731 J/(cm s K) = 1.731 W/(m K)
1 Btu(IT)/(in h°F) = 12 Btu(IT)/(ft h°F) = 144 Btu(IT)in/(ft² h°F) = 17.858 kcal/(m h°C) = 0.20769 J/(cm s K)= 20.769 W/(m K)
1 (Btu(IT) in)/(ft² h°F) = 0.08333 Btu(IT)/(ft h°F) = 0.00694 Btu(IT)/(in h°F) = 0.12401 kcal/(m h°C) = 0.001442 J/(cm s K) = 0.1442 W/(m K)
1 J/(cm s K) = 100 W/(m K) = 57.789 Btu(IT)/(ft h°F) = 4.8149 Btu(IT)/(in h°F) = 693.35 (Btu(IT) in)/(ft² h°F) = 85.984 kcal/(m h°C)
1 kcal/(m h°C) = 0.6720 Btu(IT)/(ft h°F) = 0.05600 Btu(IT)/(in h°F) = 8.0636 (Btu(IT) in)/(ft² h°F) = 0.01163 J/(cm s K) = 1.163 W/(m K)
1 W/(m K) = 0.01 W/(cm K) = 0.01 J/(cm s K) = 0.5779 Btu(IT)/(ft h°F) = 0.04815 Btu(IT)/(in h°F) = 6.9335 (Btu(IT) in)/(ft² h°F) = 0.85984 kcal/(m h°C)

Thermal Diffusivity

square feet/second [ft²/s], square feet/hour [ft²/h], square metre/hour [m²/h], square metre/second [m²/s]

1 ft²/h = 2.7778x10^-4 ft²/s = 0.09290 m²/h = 2.581x10^-5 m²/s
1 ft²/s = 3600 ft²/h = 334.45 m²/h = 0.09290 m²/s
1 m²/h = 2.7778x10^-4 m²/s = 10.7639 ft²/h = 0.002990 ft²/s
1 m²/s = 3600 m²/h = 38750.1 ft²/h = 10.7639 ft²/s

Thermal Expansion

length/(length degree fahrenheit) [in/(in°F)]=[m/(m°F)] = length/(length degree Rankin) [in/(in°R)]=[m/(m°R)], length/(length degree kelvin) [m/(m K)]=[in/(in K)]= length/(length degree celcius)[m/(m ^oC)]=[in/(in °C)]

1 m/(m ^oC) = 1 m/(m K) = 0.5556 in/(in°F) = 0.5556 m/(m°F) = 0.5556 = 0 .5556 in/(in°R) = 0.5556 m/(m°R)
1 in/(in ^oF) = 1 in/(in ^oR) = 1.8 m/(m ^oC) = 1.8 in/(in °C) = 1.8 m/(m K) = 1.8 in/(in K)

Thermal Resistance

degree fahrenheit hour/british thermal unit (international) [°F h/Btu(IT)] = degree rankin hour/british thermal unit(international) [°R h/Btu(IT)], degree kelvin/watt [K/W]=degree celcius/watt [°C/W]

1 °C/W = 1 K/W = 0.5275 °F h/Btu = 0.5275 °R h/Btu(IT)
1 °F h/Btu(IT) = 1 °R h/Btu(IT) = 1.8958 K/W = 1.8958 °C/W
1 K/W = 1 °C/W = 0.5275 °F h/Btu = 0.5275 °R h/Btu(IT)
1 °R h/Btu(IT) = 1 °F h/Btu(IT) =1.8958 K/W = 1.8958 °C/W

Thermal Resistivity

centimetre degree kelvin/watt [cm K/W], foot degree fahrenheit hour/british thermal unit(international) [ft°F h/Btu(IT)], metre degree kelvin/watt [m K/W]=meter degree celcius/watt [m°C/W], square foot degree fahrenheit hour/(british thermal unit(international) inch) [ft²°F h/(Btu(IT) in)]

1 cm K/W = 0.01 m^oC/W = 0.01 m K/W = 0.001442 ft²°F h/(Btu(IT) in) = 0.01731 ft°F h/Btu(IT)
1 ft°F h/Btu(IT) = 1/12 ft²°F h/(Btu(IT) in) = 0.08333 ft²°F h/(Btu(IT) in) = 57.789 cm K/W = 0.5778 m^oC/W = 0.5778 m K/W
1 ft²°F h/(Btu(IT) in) = 12 ft°F h/Btu(IT) = 693.35 cm K/W = 6.9335 m^oC/W = 6.9335 m K/W
1 m^oC/W = 1 m K/W = 100 cm K/W = 0.1442 ft²°F h/(Btu(IT) in) = 1.731 ft°F h/Btu(IT)
1 m K/W = 1 m^oC/W = 100 cm K/W = 0.1442 ft²°F h/(Btu(IT) in) = 1.731 ft°F h/Btu(IT)

Time

day (mean solar) [d], hour [h]=[hr], microsecond [μs], millisecond [ms], minute [min], month[month], nanosecond [ns], second [s]=[sec], sidereal day [d(sidereal)], sidereal month [month(sidereal)], sidereal year [y(sidereal)], week [week], year (calendar) [y]=[yr],

1 d = 1.0027379 d (sidereal) = 86400 s = 1440 min = 24 h = 1/7 week = 0.1428 week = 0.3285 month = 0.0027378 y
1 h = 1.002738 hour (sidereal) = 3600 s = 60 min = 1/24 d = 0.04167 d = 0.005952 week = 0.001369 month = 0.000114 y
1 μs = 10^-6 s
1 min = 60 s = 1/60 h = 0.01667 h = 1/1440 d = 0.000694 d
1 month = 1.11402 month(sidereal) = 4330 min = 730.5 h = 30.437 d = 4.348 week = 1/12 y = 0.0833 y
1 ms = 10^-3 s
1 ns = 10^-9 s
1 s = 9192631770 cycles of the standard Cs-133 transition = 1000 ms = 1x10⁶μs = 1x10⁹ ns = 1/60 min = 0.01667 min = 1/3600 h = 0.000278 h
1 week = 10080 min = 168 h = 7 d = 0.230 month = 0.0192 y
1 y = 0.999962 y(sidereal) = 31.56x10⁶ s = 0.5259x10⁶ min = 8766 h = 365.25 d = 52.18 week = 12 month

Torque, Moment

foot-pound torque [ft lbf], gram-force centimetre [gf cm] kilogram-force metre [kgf m] = kilopond metre [kpm], kilogram-force centimetre [kgf cm], millinewton metre [mN m], newton metre [N m], inch ounce-force [in ozf ], inch pound-force [in lbf]

Note that the unit of work ft-lb_f (foot-pound) is in practice commonly used as the unit of torque in the Imperial system. The unit for torque is lb_f-ft (pound-foot) - one pound of force acting at a perpendicular distance of one foot from a pivot point.

1 gf cm = 1x10^-6 kgf m = 1x10^-4 kgf cm = 9.807x10^-5 Nm = 0.09807 mN m = 7.23x10^-5 ft lbf = 8.68x10^-4 lbf in = 0.01389 in ozf
1 kgf m = 1 kpm = 1x10⁶ gf cm = 100 kgf cm = 9.807 Nm = 9807 mN m = 7.23 ft lbf = 86.8 in lbf = 1389 in ozf
1 kgf cm = 0.01 kgf m = 1000 gf cm = 0.09807 Nm = 98.07 mN m = 0.0723 ft lbf = 0.868 in lbf = 13.89 in ozf
1 lbf ft = 1 ft lbf = 12 in lbf = 192.00 in oz = 0.1383 kgf m = 13.826 kgf cm = 13825.5 gf cm = 1.3558 Nm = 1355.82 mN m
1 kip foot = 1000 lbf ft
1 in lbf = 1/12 ft lbf = 0.08333 ft lbf = 16 in ozf = 0.01152 kgf m = 1.152 kgf cm = 1152.1 gf cm = 0.11299 Nm = 112.99 mN m
1 mN m = 0.001 N m = 10.197 gf cm = 1.0197x10^-4 kgf m = 0.01020 kgf cm = 7.376x10^-4 ft lbf = 0.008851 in lbf = 0.1416 in ozf
1 N m = 1000 mN m = 10197 gf cm = 0.10197 kgf m = 10.197 kgf cm = 0.7376 ft lbf = 8.851 in lbf = 141.6 in ozf
1 in ozf = 0.005208 ft lbf = 1/16 in lbf = 0.0625 in lbf = 0.0007201 kgf m = 0.07201 kgf cm = 72.008 gf cm = 0.007062 Nm = 7.061 mN m

Velocity, Speed

foot/minute [ft/min], foot/second [ft/s], inch/second [in/s], kilometre/hour [km/h], knot [knot] = nautical mile per hour, metre/second [m/s], mile/hour [mi/h]=[mph]

1 ft/s = 0.3048 m/s
1 ft/min = 5.08x10^-3 m/s = 0.0183 km/h = 0.0114 mph
1 mph = 0.44703 m/s = 1.609 km/h = 88 ft/min = 5280 ft/hr = 1.467 Ft./sec. = 0.8684 knots
1 m/s = 3.6 km/h = 196.85 ft/min = 2.237 mph
1 km/h = 0.2778 m/s = 54.68 ft/min = 0.6214 mph = 0.5396 knot
1 knot (nautical mile per hour) = 0.514444444 m/s = 1.852 kilometers per hour = 1.1515 miles per hour= 1 nautical miles per hour
1 League = 3.0 Miles
1 cm/sec = 1.9685 foot/min = 0.0328 foot/sec = 0.036 km/hr = 0.0194 knots (Int) = 0.6 meter/min = 0.02237 mile/hr = 0.000373 mile/min

Viscosity Dynamic, Absolute

centipoise [cP], gram/(centimetre second) [g/(cm s)] = poise [P], kilogram/metre second [kg/m s]=newton second/square metre [N s/m²]= pascal second [Pa s], pound/(foot hour) [lb/(ft h)], pound/(foot second) [lb/(ft s)], pound-force second/square foot [lbf s/ft²], reyn [reyn]= pound-force second/square inch [lbf s/in²]

1 cP = 10^-3 Pa s = 0.01 P = = 0.01 g/(cm sec) = 6.721x10^-4 lb/(ft s) = 2.4191 lb/(ft h) = 2.089x10^-5 lbf s/ft²
1 kg/(m s ) = 1 (N s)/m² = 1Pa s = 10 P = 1000 cP = 0.6720 lb/(ft s) = 2419.1 lb/(ft h) = 0.02089 lbf s/ft²
1 lb/(ft h) = 0.000278 lb/(ft s) = 8.63x10^-6 lbf s/ft² = 0.000413 Pa s = 0.004134 P = 0.4134 cP
1 lb/(ft s) = 3600 lb/(ft h) = 0.03108 lbf s/ft²= 1.4882 Pa s = 14.882 P = 1488.2 cP
1 lbf s/ft² = 32.17 lb/(ft s) = 115826 lb/(ft h)= 47.88 Pa s = 478.80 P = 47880.26 cP
1 lbf s/in² = 1 reyn = 144 lbf s/ft²= 6894.76 Pa s
1 (N s)/m² = 1 kg/(m s) = 1Pa s = 10 P = 1000 cP = 0.6720 lb/(ft s) = 0.6720 slug/(ft s) = 2419.1 lb/(ft h) = 0.02089 lb_f s/ft²
1 P = 1 g/(cm s) = 0.1 Pa s = 100 cP = 0.06720 lb/(ft s) = 241.91 lb/(ft h) = 0.002089 lbf s/ft²
1 Pa s = 1 kg/(m s) = 1 (N s)/m² = 10 P = 1000 cP = 0.6721 lb/(ft s) = 2419.1 lb/(ft h) = 0.02089 lbf s/ft² = 0.000145 reyn
1 reyn = 1 lbf s/in² = 144 lbf s/ft²= 6894.76 Pa s
Dynamic, Absolute and Kinematic Viscosity - An introduction to dynamic, absolute and kinematic viscosity and how to convert between CentiStokes (cSt), CentiPoises (cP), Saybolt Universal Seconds (SSU) and degree Engler.

Viscosity Kinematic

centistoke [cSt] = square millimeter/second [mm²/s], square foot/hour [ft²/h], square foot/second [ft²/s], square inch/second [in²/s], square metre/hour [m²/h], square metre/second [m²/s], stoke [St] = square centimetre/second [cm²/s]

1 cm²/s = 1 St = 100 mm²/s = 100 cSt = 1x10^-4 m²/s = 0.36 m²/h = 1.07639x10^-3 ft²/s = 3.875008 ft²/h = 0.1550003 in²/s
1 cSt = 1 mm²/s = 0.01 St = 1x10^-6 m²/s = 0.0036 m²/h = 1.07639x10^-5 ft²/s = 0.03875008 ft²/h = 0.001550003 in²/s
1 ft²/h = 2.7778x10^-4 ft²/s = 0.04 in²/s = 2.58064x10^-5m²/s = 0.09290304 m²/h = 25.8064 cS = 0.258064 St
1 ft²/s = 3600 ft²/h = 144 in²/s = 0.09290304 m²/s = 334.451 m²/h = 92903.04 cSt = 929.0304 St
1 in²/s = 0.0069444 ft²/s = 25 ft²/h = 0.00064516 m²/s = 2.322576 m²/h = 645.16 cSt = 6.4516 St
1 m²/h = 1/3600 m²/s = 2.7778x10^-4 m²/s = 2.7778 cm²/s = 277.78 mm²/s = 277.78 cSt = 2.7778 St = 0.00298998 ft²/s = 10.7639 ft²/h = 0.430556 in²/s
1 m²/s = 3600 m²/h = 1x10⁴ cm²/s = 1x10⁴ St = 1x10⁶ mm²/s = 1x10⁶ cSt = 10.7639 ft²/s = 38750.08 ft²/h = 1550003 in²/s
1 mm²/s = 1 cSt = 1x10^-6 m²/s = 0.0036 m²/h = 0.01 cm²/s = 0.01 St = 1.07639x10^-5 ft²/s = 0.03875008 ft²/h = 0.001550003 in²/s
1 St = 1 cm²/s = 100 cSt = 100 mm²/s = 1x10^-4 m²/s = 0.36 m²/h = 1.076x10^-3 ft²/s = 3.875008 ft²/h = 0.1550003 in²/s

Volume

acre-foot [ac-ft], acre-inch [ac-in], barrel [bbl], bourbon barrel [bbl(bourbon)] = american standard barrel [ASB], barrel of oil [bo]=[bbl(oil)] board foot [board ft], bucket [bucket], bushel [bu], butt [butt], chaldron [chaldron], cord [cord], cubic centimetre [cm³] = milliliter [ml]=[mL], cubic decimetre [dm³] = liter [l]=[L], cubic foot [ft³], cubic inch [in³], cubic metre [m³], cubic mile [mi³], cubic yard [yd³], cup [c], dram=drachm [dr] = fluid dram [fl dr], fifth [fifth], fluid ounce [fl oz] = shot [shot], gallon [gal], gill [gi], hectoliter [hl]=[hL], hogshead [hhd], jigger [jigger], minim [min], peck [pk], pint [pt], quart [qt], spice measure [spice measure], tablespoon [Tbsp], teaspoon [tsp]

Abbreviations for areas of use: UK= United Kingdom = Imperical US= United States of America dry= dry volumes fed= federal liq= liquid volumes met= metric

1 ac-ft = 12 ac-in = 43560 ft³ = 1233.482 m³ = 1613.33 yd³ = 3.259x10⁵ gal(US liquid) = 7758 bbl(US oil)
1 ac-in = 3630 ft³ = 102.7901531 m³ = 134.44 yd³ = 27154.286 gal(US liquid)
1 ASB = 200 l = 1.6772 bbl(US liq) = 1.2580 bbl(US oil) = 1.2221 bbl(UK)
1 bbl(beer) = 1 bbl(US fed) = 117.35 l = 31 gal(US liq)
1 bbl(bourbon) = 1 ASB = 200 l = 52.83 gal(US) = 44 gal(UK)
1 bbl(UK) = 163.659 l = 1.3725 barrel (US liq) = 1.4154 barrel (US dry) = 1.0294 bbl(US oil) = 1.395 bbl(US fed) = 4.5 bu(UK) = 4.6440 bu(US, dry) = 36 gal(UK)= 5.7796 ft³= 0.16366 m³
1 bbl(US oil) = 158.987 l = 1.333 bbl (US liq) = 0.97145 bbl(UK) = 42 gal(US liq) = 34.97 gal(UK) = 5.61458 ft³= 9702 in³
1 bbl(US dry) = 115.628 l = 0.9697 barrel (US liq) = 0.7273 bbl(US oil) = 0.7066 bbl(UK) = 3.28122 bu(US dry) = 4.0833 ft³ = 7056 in³ = 0.11563 m³ = 104.999 qt (US dry)
1 bbl(US liq) = 119.240 l = 1.03124 bbl(US dry) = 0.75 bbl(US oil) = 0.7286 bbl(UK) = 4.2109 ft³ = 7276.5 in³ = 0.11924 m³ = 26.22924 gal(UK) = 31.5 gal(US liq) = 3.3837 bu(US dry)
1 bbl(US fed) = 1 bbl(beer) = 117.35 l = 31 gal(US liq)
1 board ft = piece of lumber 1 ft x 1 ft x 1 in = 1/12 ft³ = 0.08333 ft³ = 144 in³ = 2359.74 cm³ = 2.3597 l
1 bucket (UK) = 4 gal(UK) = 16 qt(UK) = 32 pt(UK) = 4.8034 gal(US liq) = 4.1282 gal(US dry) = 0.6422 ft³ = 18.184 l = 0.018184.35 m³
1 bu = 1 bu(US dry) = 35.2391 l = 0.96894 bu(UK) = 0.30476 bbl (US dry) = 4 pk(US dry) = 8 gal(US dry) = 32 qt(US dry) = 64 pt (US dry) = 1.2445 ft³ = 2150.4 in³= 0.04609 yd³= 0.035239 m³
1 bu(UK) = 36.3687 l = 1.03206 bu(US dry) = 0.2222 bbl(UK) = 1.28435 ft³ = 2219 in³ = 8 gal(UK) = 32 qt(UK) = 64 pt(UK) = 0.036369 m³
1 bu(US dry) = 1 bu = 35.2391 l = 0.96894 bu(UK) = 0.30476 bbl (US dry) = 4 pk(US dry) = 8 gal(US dry) = 32 qt(US dry) = 64 pt (US dry) = 1.2445 ft³ = 2150.4 in³= 0.04609 yd³= 0.035239 m³
1 butt (UK liq) = 2 hhd = 108 gal(US dry) = 126 gal(US liq) = 4 bbl (US liq) = 13.5 bushel (US dry) = 16.80 ft³ = 0.47573 m³
1 c(US) = 1/16 gal(US) = 1/4 qt(US) = 1/2 pt(US) = 8 fl oz = 16 Tbsp = 48 tsp = 14.44 in³= 236.6 cm³ = 0.2366 l
1 c(met) = 250 cm³ = 0.25 l = 15.26 in³
1 chaldron = 8 bbl(UK) = 36 bu(UK) = 144 pk(UK) = 288 gal(UK) = 1.30927 m³ = 1309.27 l = 46.2365 ft³ = 1.71247 yd³
1 cm³ = 1000 mm³ = 1 spice measure = 1/15 Tbsp = 0.06667 Tbsp = 0.2 tsp = 1x10^-6 m³ = 0.001 l = 0.06102 in³ = 2.7496x10^-5 bu(UK) = 2.8378x10^-5 bu(US dry) = 3.5315x10^-5 ft³ = 0.06102 in³ = 1.308x10^-6 yd³ = 0.28156 drachm (UK, liq) = 0.27051 dr(US liq) = 0.000220 gal(UK) = 0.000227 gal(US dry) = 0.000264 gal(US liq) = 0.007039 gi(UK)= 0.008454 gi(US liq) = 0.035195 fl oz(UK) = 0.033814 fl oz(US) = 0.00182 pt(US dry) = 0.00211 pt (US liq)
1 cord (firewood) = 4 ft x 8 ft x 4 ft = 128 ft³ = 8 cord ft (timber) = 3.6246 m³
1 cord ft (timber) = 0.125 cord (firewood) = 16 ft³ = 0.4531 m³
1 dm³ = 1 l = 10-3 m3 = 1000 cm3 = 1000 ml = 61.0237 in3 = 0.03532 ft3 = 1.308x10-3 yd3 = 0.2200 gal(UK) = 0.2642 gal(US liq) = 1.0567 qt(US liq) = 2.1134 pt(US liq)
1 fifth (US liq) = 1/5 gal(US) = 0.2 gal(US) = 0.8 qt(US liq) = 1.6 pt (US liq) = 25.6 fl oz(US) = 25.6 shot(US liq) = 17.067 jigger(US liq) = 0.75708 l = 46.2 in³
1 firkin(UK) = 1.20095 firkin(US dry) = 0.25 bbl(UK) = 1.125 bu(UK) = 9 gal(UK) = 10.81 gal(US) = 72 pt(UK) = 40.91481 l = 1.44489 ft³
1 fl dr(UK) = 0.96076 dr(US) = 60 min(UK) = 1/8 fl oz = 0.125 fl oz(UK) = 0.1201 fl oz(US) = 0.025 gi(UK) = 0.00625 pt(UK) = 3.5516 ml = 0.21673 in³
1 fl dr(US) = 1.0408 dr(UK) = 60 min(US) = 0.125 fl oz (US) = 0.1301 fl oz (UK) = 0.03125 gi(US liq) = 0.0078125 pt (US liq) = 3.6967 cm³ = 3.6967 ml = 0.225586 in³
1 fl oz(UK) = 0.96076 fl oz(US) = 1/20 pt(UK) = 0.05 pt(UK) = 1/5 gi(UK) = 0.2 gi(UK)= 8 dr(UK) = 480 min(UK) = 0.02841 l = 28.413 cm³ = 1.7339 in³
1 fl oz(US) = 1.0408 fl oz(UK) = 1/16 pt(US) = 0.0625 pt(US liq) = 1/4 gi(US) = 0.25 gi(US liq)= 2 Tbsp(US) = 6 tsp = 8 dr(US) = 480 min(US) = 0.02957 l = 29.574 cm³ = 1.80469 in³
1 ft³ = 28316.8 cm³ = 28.317 l = 0.02832 m³= 1727.9998 in³ = 0.037037 yd³ = 996.614 fl oz(UK) = 957.506 fl oz(US) = 49.8307 pt(UK) = 51.4281 pt(US dry) = 59.8442 pt(US liq) = 24.915 qt(UK) = 25.714 qt(US dry) = 29.922 qt(US liq)= 6.2288 gal(UK) = 7.4805 gal(US liq) = 6.4285 gal(US dry) = 2.296x10^-5 ac-ft = 12 board ft (timber) = 0.7786 bu(UK) = 0.8036 bu(US dry) = 0.00781 cord (firewood) = 0.0625 cord ft (timber)
1 gal(UK) = 4.5461 l = 1.0321 gal(US dry) = 1.2009 gal(US liq) = 1/8 bu(UK) = 0.125 bu(UK) = 0.5 pk(UK) = 4 qt(UK) = 8pt(UK) = 32 gi(UK) = 160 fl oz(UK) = 1280 fl dr(UK) = 4.5461x10^-3 m³ = 0.1605 ft³ = 5.946x10^-3 yd³
1 gal(US dry) = 4.4049 l = 0.9689gal(UK) = 1.1636 gal(US liq) = 1/8 bu(US) = 0.125 bu(US) = 0.5 pk(US) = 4 qt(US dry) = 8pt(US dry) = 32 gi(US dry) = 148.95 fl oz(US liq) = 1191.6 fl dr(US) = 4.4049x10^-3 m³ = 0.1556 ft³ = 5.761x10^-3 yd³
1 gal(US liq) = 3.7854 l = 0.8327 gal(UK) = 0.8594 gal(US dry) = 0.1074 bu(US dry) = 0.4297 pk(US dry) = 4 qt(US liq) = 8pt(US liq) = 16 c(US) = 32 gi(US liq) = 128 fl oz(US) = 1024 fl dr(US) = 3.7854x10^-3 m³ = 0.1337 ft³ = 4.951x10^-3 yd
1 gi(UK) = 0.14207 l = 1.2009 gi(US liq) = 1/8 qt(UK) = 0.125 qt(UK) = 1/4 pt(UK) = 5 fl oz(UK) = 40 fl dr(UK) = 2400 min(UK) = 8.6694 in³ = = 0.005017 ft³
1 gi(US liq) = 0.1183 l = 0.8327 gi(UK) = 1/8 qt(US liq) = 0.125 qt(US liq) = 1/4 pt(US liq) = 4 fl oz(US) = 32 fl dr(US) = 1920 min(US) = 7.2188 in³ = 0.004178 ft³
1 hhd = 238.48 l = 2 bbl(US liq) = 63 gal(US liq) = 252 qt(US liq) = 0.2385 m³ = 8.42184 ft³ = 0.3119 yd³
1 hhd(UK) = 238.67 l = 1.00079 hhd = 52.5 gal(UK) = 1.4583 bbl(UK) = 210 qt(UK) = 420 pt(UK) = 0.2387 m³ = 8.4285 ft³ = 0.3122 yd³
1 hl = 100 l = 0.1 m³ = 1x10⁵ cm³ = 6102.4 in³ = 3.5315 ft³ = 0.1308 yd³ = 2.7496 bu(UK) = 2.8378 bushel (US dry) = 26.417 gal(US liq) = 3381.4 fl oz(US) = 11.351 pk(US)
1 in³ = 0.000579 ft³ = 2.143x10-5 yd³ = 1.6387x10^-5 m³ = 1.639x10^-2 l = 16.39 cm³ = 16390 mm³ = 4.614 fl dr(UK) = 4.4329 fl dr(US) = 0.5767 fl oz(UK) = 0.5541 fl oz(US) = 1.0925 tbsp(met)
1 jigger(US) = 1.5 fl oz(US) = 44.36 ml = 2.7070 in³
1 km³ = 10⁹ m³ = 10¹² l =0.2399 mi³= 1.308x10⁹ yd³
1 l = 1 dm³ = 10-3 m³ = 1000 cm³ = 1000 ml = 61.0237 in³ = 0.03532 ft³ = 1.308x10-3 yd³ = 0.2200 gal(UK) = 0.2642 gal(US liq) = 1.0567 qt(US liq) = 2.1134 pt(US liq)
1 m³ = 1x10-9 km³ = 1000 l = 1000 dm³ = 35.315 ft³ = 1.30795 yd³ = 219.97 gal(UK) = 264.172 gal(US liq) = 61023.7 in³ = 4.1932 hhd = 113.51 pk(US)
1 mi³ = 4.1682 km³ = 4.17x10¹² l = 5.452x10⁹ yd³
1 min(UK) = 0.9607 min(US) = 1/60 fl dr(UK) = 0.016667 fl dr(UK) = 1/480 fl oz(UK) = 0.0020833 fl oz(UK) = 0.05919 cm³
1 min(US) = 1.04084 min(UK) = = 1/60 fl dr(US) = 0.016667 fl dr(UK) = 1/480 fl oz(US) = 0.0020833 fl oz(US) = 0.06161 cm³
1 pk(UK) = 1.0321 pk(US) = 1/4 bu(UK) = 2 gal(UK) = 8 qt(UK) = 16 pt(UK) = 64 gi(UK) = 0.009092 m³ = 9.0922 l = 0.3211 ft³ =0.01189 yd³ = 554.73 in³
1 pk(US) = 0.9689 pk(UK) = 1/4 bu(US) = 2 gal(US dry) = 8 qt(US dry) = 16 pt(US dry) = 74.47 gi(US liq) = 0.008810 m³ =8.8098 l = 0.3111 ft³ =0.01152 yd³ = 537.61 in³
1 pt(UK) = 1.0321 pt(US dry) = 1.2009 pt(US liq) = 1/16 pk(UK) = 0.0625 pk(UK) = 1/8 gal(UK) = 0.125 gal(UK) = 0.5 qt(UK) = 4 gi(UK) = 20 fl oz(UK) = 0.5683 l = 0.02007 ft³ = 34.677 in³
1 pt(US dry) = 0.9689 pt(UK) = 1.1636 pt(US liq) = 1/16 pk(US) = 0.0625 pk(US) = 1/8 gal(US dry) = 0.125 gal(US dry) = 0.5 qt(US dry) = 4.6546 gi(US liq) = 18.618 fl oz(US) = 0.5506 l = 0.01944 ft³ = 33.6003 in³
1 pt(US liq) = 0.8327 pt(UK) = 0.8594 pt(US liq) = 0.05371 pk(US) = 1/8 gal(US liq) = 0.125 gal(US liq) = 0.5 qt(US liq) = 4.6546 gi(US liq) = 16 fl oz(US) = 0.4732 l = 0.01671 ft³ = 28.875 in³
1 qt(UK) = 1.0321 qt(US dry) = 1.2009 qt(US liq) = 0.125 pk(UK) = 1/4 gal(UK) = 2 pt(UK) = 8 gi(UK) = 40 fl oz(UK) = 320 fl dr(UK) = 1.1365 l = 0.04014 ft³ = 69.3549 in³
1 qt(US dry) =0.9689 qt(UK) = 1.1636 qt(US liq) = 0.125 pk(US) = 1/4 gal(US dry) = 2 pt(US dry) = 9.309 gi(US liq) = 37.2367 fl oz(US) = 297.8937 fl dr(US) = 1.1012 l = 0.03889 ft³ = 67.2006 in³
1 qt(US liq) = 0.8327 qt(UK) = 0.8594 qt(US liq) = 0.1074 pk(US) = 1/4 gal(US liq) = 2 pt(US liq) = 8 gi(US liq) = 32 fl oz(US) = 256 fl dr(US) = 0.9464 l = 0.03342 ft³ = 57.75 in³
1 Tbsp(met) = 1.0144 Tbsp(US) = 3 tsp(met) = 15 cm³ = 0.9153 in³
1 Tbsp(US) = 0.9868 Tbsp(met) = 1/8 gi(US liq) = 0.125 gi(US liq) = 0.5 fl oz(US) = 3 tsp(US) = 4 fl dr(US) = 14.7868 cm³ = 0.9023 in³
1 tsp (met) = 1.0144 tsp(US) = 1/3 Tbsp(met) = 5 cm³ = 0.3051 in³
1 tsp(US) = 0.9858 tsp(met) = 1/3 Tbsp(US) = 1/6 fl oz(US) = 0.16667 fl oz(US) = 1¹/₃fl dr(US) = 1.3333 fl dr(US) = 80 min(US) = 4.9289 cm³ = 0.3008 in³
1 yd³ = 27 ft³= 4.6656x10⁴ in³ = 0.7646 m³ = 764.6 l = 168.18 gal(UK) = 201.97 gal(US liq) = 1616 pt(US liq) = 807.9 qt(US liq)

Volume Flow

barrel/day [bbl/d], barrel of oil/day [bo/d]=[bbl(oil)/d], cubic centimetre/second [cm³/s], cubic decimetre/hour [dm³/h]=liter/hour [l/h], cubic decimetre/minute [dm³/min]=liter/minute [l/min], cubic decimetre/second [dm³/s]=liter/second [l/s], cubic foot/minute [ft³/min]=[cfm], cubic foot/second [ft³/s], cubic inch/second [in³/s], cubic metre/hour [m³/h], cubic inch/minute [in³/min], cubic metre/second [m³/s], cubic yard/hour [yd³/h], cubic yard/minute [yd³/min], gallon/day [gal/d], gallon/hour [gal/h], gallon/minute [gal/min], pint/second [pt/s], quart/second [qt/s]

Abbreviations for areas of use: UK= United Kingdom = Imperical US= United States of America dry= dry volumes liq= liquid volumes

1 bbl(US liq)/d = 119.24 l/d = 1.3801 cm³/s = 0.75 bo/d = 31.5 gal(US liq)/d = 0.1754 ft³/h = 5.0531 in³/min
1 bo/d = 158.99 l/d = 0.006624 m³/h = 1.8401 cm³/s = 42 gal(US liq)/d = 5.61458 ft³/d = 6.7375 in³/min
1 cfm = 1 ft³/min = 1728 in³/min = 28.8 in³/s = 0.03704 yd³/min = 2.222 yd³/h = 4.720x10-4 m³/s = 1.699 m³/h = 0.4719 l/s = 6.2288 gal(UK)/min = 7.4805 gal(US liq)/min = 0.9974 pt(US liq)/s
1 cm³/s = 1x10-6 m³/s = 3.6 l/h = 3.6614 in³/min = 0.9510 gal(US liq)/h = 0.724 bbl(US liq)/d = 0.00211 pt(US liq)/s
1 dm³/h = 1 l/h = 2.7778x10^-7 m³/s = 0.27778 cm³/s = 9.810x10-6 ft³/s = 1.0171 in³/min = 0.2013 bbl(US liq)/d = 0.2642 gal(US liq)/h
1 dm3/min = 1 l/min = 1.6667x10^-5 m³/s = 60000 cm³/h = 1.017 in³/s = 5.886x10-4 ft³/s = 15.85 gal(US liq)/h = 12.076 bbl(US liq)/d
1 dm³/s = 1 l/s = 60 l/min = 3600 l/h = 0.001 m³/s = 3.6 m³/h = 1000 cm³/s = 0.03532 ft³/s = 2.1189 ft³/min = 61.024 in3/s = 13.198 gal(UK)/min = 15.850 gal(US liq)/min = 792 gal(UK)/h
1 ft³/min = 1 cfm = 1728 in³/min = 28.8 in³/s = 0.03704 yd³/min = 2.222 yd³/h = 4.720x10-4 m³/s = 1.699 m³/h = 0.4719 l/s = 6.2288 gal(UK)/min = 7.4805 gal(US liq)/min = 0.9974 pt(US liq)/s
1 ft³/s = 60 ft³/min = 2.2222 yd³/min = 1.037x10⁵ in³/min = 0.0283168 m³/s = 101.94 m³/h = 28.3168 l/s = 373.73 gal(UK)/min = 448.83 gal(US)/min = 59.8442 pt(US liq)/s
1 gal(US liq)/d = = 0.8327 gal(UK)/d = 0.03175 bbl(US liq)/d = 9.259x10^-5 pt(US liq)/s = 4.3813x10^-8 m3/s = 2.6288 cm³/min = 0.1604 in³/min
1 gal(US liq)/h = 0.8327 gal(UK)/h = 1.0515x10^-6 m³/s = 0.003785 m³/h = 0.001051 l/s = 3.713x10^-5 ft³/s = 0.002228 ft³/min = 3.85 in³/min = 0.002222 pt(US liq)/s = 0.0009549 qt(US dry)/s
1 gal(UK)/h =1.2009 gal(US liq) = 1.263x10^-6 m³/s = 4.459x10^-5 ft³/s = 0.002676 ft³/min = 4.624 in³/min
1 gal(US liq)/min = 0.8327 gal(UK)/min = 6.3090x10^-5 m³/s = 0.2271 m³/h = 0.06309 l/s = 2.228x10^-3 ft³/s = 0.1337 ft³/min = 1.201 gal (US)/min
1 in3/min = 0.03472 ft³/h = 2.143x10^-5 yd³/min = 0.2731 cm³/s = 9.832x10^-4 m3/h = 2.731x10^-4 l/s = 0.2162 gal(UK)/h = 0.2597 gal(US)/min = 5.772x10^-4 pt(US liq)/s
1 in³/s = 60 in³/min = 0.03472 ft³/min = 0.07716 yd³/h = 16.3871 cm³/s = 58.993 l/h = 1.639x10-5 m³/s = 0.2597 gal(US liq)/min
1 l/h = 1 dm³/h = 2.7778x10^-7 m³/s = 0.27778 cm³/s = 9.810x10-6 ft³/s = 1.0171 in³/min = 0.2013 bbl(US liq)/d = 0.2642 gal(US liq)/h
1 l/min = 1dm3/min = 1.6667x10^-5 m³/s = 60000 cm³/h = 1.017 in³/s = 5.886x10-4 ft³/s = 15.85 gal(US liq)/h = 12.076 bbl(US liq)/d
1 l/s = 1 dm³/s = 60 l/min = 3600 l/h = 0.001 m³/s = 3.6 m³/h = 1000 cm³/s = 0.03532 ft³/s = 2.1189 ft³/min = 61.024 in3/s = 13.198 gal(UK)/min = 15.850 gal(US liq)/min = 792 gal(UK)/h
1 m³/h = 2.7778x10^-4 m³/s = 1000 l/h = 16.667 l/min = 0.27778 l/s = 277.78 cm³/s = 9.810x10^-3 ft³/s = 0.5886 ft³/min = 3.666 gal (UK)/min = 4.403 gal(US liq)/min = 0.5871 pt(US liq)/s
1 m³/s = 3600 m³/h = 1000 l/s = 35.32 ft³/s = 2118.9 ft³/min = 13198 gal(UK)/min = 15850 gal(US liq)/min = 791891 gal(UK)/h = 908.08 qt(US dry)/s
1 pt(US liq)/s = 7.5 gal(US liq)/min = 0.4296 qt(US dry)/s =4.732x10^-4 m3/s = 473.18 cm³/s = 1703.4 l/h = 28.875 in³/s
1 qt(US dry)/s = 2.327 pt(US liq)/s = 17.455 gal(US liq)/min = 1.101 l/s = 0.03889 ft³/s = 5.1852 yd³/h = 67.20 in³/s
1 yd³/h = 0.45 ft³/min = 12.96 in³/s = 0.0002124 m³/s = 764.55 l/h = 212.4 cm³/s = 153.88 bbl(US liq)/d = 3.366 gal(US liq)/min = 0.4488 pt(US liq)/s
1 yd³/min = 27 ft³/min = 777.6 in³/s = 0.01274 m³/s = 45873 l/h = 12742 cm³/s = 7688 bbl(US liq)/d = 9233 gal(US liq)/min = 26.9299 pt(US liq)/s

Volume per unit length

1 gal(US)/ft = 12.4 liter/m

Weight - see Mass

Check Density, Specific Weight and Specific Gravity - An introduction and definition of density, specific weight and specific gravity. Formulas with examples.