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Methane - Density and Specific Weight

Online calculator, figures and tables showing density and specific weight of methane, CH4, at temperatures ranging from -160 to 725 °C (-260 to 1300 °F) at atmospheric and higher pressure - Imperial and SI Units

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Density, ρ, has units typically [kg/m3] or [lb/ft3], and is defined by the ratio of the mass to the volume of a substance:

ρ = m/V                      [1]

where     m = mass, units typically [kg] or [lb]
               V = volume, units typically [m3] or [ft3]

Specific weight, γ, has units typically [N/m3] or [lbf/ft3]  is defined by the ratio of the weight to the volume of a substance:

γ = (m * g)/V = ρ * g                [2]

where    g = acceleration due to gravity, units typically [m/s2] and value on Earth usually given as 9.80665 [m/s2] or 32.17405 [ft/s2]  

Tabulated values of methane density and specific weight at given temperature and pressure (SI and Imperial units) as well as density units conversion are given below the figures.

Online Methane Density Calculator

The calculator below can be used to estimate the density and specific weight of gaseous methane at given temperature and pressure.
The output density is given as kg/m3, lb/ft3, lb/gal(US liq) and sl/ft3.  Specific weight is given as N/m3 and lbf/ ft3.

Temperature

Choose the actual unit of temperature: °C  °F  °R 
Choose the actual pressure:  1 bara / 14.5 psia; 10 bara / 145 psia; 50 bara / 725 psia; 100 bara / 1450 psia;

See also other properties of Methane at varying temperature and pressure: Dynamic and kinematic viscosity, Specific heat (Heat capacity), Thermal conductivity and Prandtl number, and Thermophysical properties at standard conditions, as well as density and specific weight of acetone, air, ammonia, argon, benzene, butanecarbon dioxide, carbon monoxide, ethane, ethanol, ethylene, helium, hydrogen, methanol, nitrogen, oxygen, pentane, propane, toluene and water.
Density of crude oil, Density of fuel oils, Density of lubricating oil and Density of jet fuel as function of temperature.

Methane density temperature 1atm C

Methane density temperature 1atm F

Methane density temperature pressure C

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Density and specific weight of methane at given temperatures and pressures:

For full table with Density and Specific Weight- rotate the screen!

State Temperature Pressure Density Specific weight
[K] [°C] [°F] [MPa] [bara] [psia] [mol/dm3] [g/l], [kg/m3] [lbm/ft3] [sl/ft3*10-3] [N/m3] [lbf/ft3]
Liquid 100 -173 -280 0.1 1 14.5 27.36 438.9 27.40 851.6 4304 27.40
111.51 -161.6 -259.0 0.1 1 14.5 26.34 422.6 26.38 819.9 4144 26.38
Gas 111.51 -161.6 -259.0 0.1 1 14.5 0.1119 1.795 0.1120 3.482 17.60 0.1120
140 -133 -208 0.1 1 14.5 0.08746 1.403 0.08759 2.722 13.76 0.08759
180 -93.2 -136 0.1 1 14.5 0.06738 1.081 0.06748 2.097 10.60 0.06748
200 -73.2 -99.7 0.1 1 14.5 0.06052 0.9708 0.06061 1.884 9.521 0.06061
220 -53.2 -63.7 0.1 1 14.5 0.05493 0.8812 0.05501 1.710 8.642 0.05501
240 -33.2 -27.7 0.1 1 14.5 0.05030 0.8069 0.05037 1.566 7.913 0.05037
260 -13.2 8.3 0.1 1 14.5 0.04639 0.7442 0.04646 1.444 7.298 0.04646
280 6.9 44.3 0.1 1 14.5 0.04305 0.6906 0.04311 1.340 6.772 0.04311
300 26.9 80.3 0.1 1 14.5 0.04016 0.6442 0.04022 1.250 6.318 0.04022
320 46.9 116 0.1 1 14.5 0.03764 0.6038 0.03769 1.172 5.921 0.03769
340 66.9 152 0.1 1 14.5 0.03541 0.5681 0.03547 1.102 5.571 0.03547
360 86.9 188 0.1 1 14.5 0.03344 0.5364 0.03349 1.041 5.260 0.03349
400 127 260 0.1 1 14.5 0.03008 0.4826 0.03013 0.9364 4.732 0.03013
500 227 440 0.1 1 14.5 0.02406 0.3859 0.02409 0.7488 3.784 0.02409
600 327 620 0.1 1 14.5 0.02004 0.3215 0.02007 0.6238 3.153 0.02007
700 427 800 0.1 1 14.5 0.01718 0.2756 0.01721 0.5348 2.703 0.01721
800 527 980 0.1 1 14.5 0.01503 0.2411 0.01505 0.4678 2.364 0.01505
900 627 1160 0.1 1 14.5 0.01336 0.2143 0.01338 0.4158 2.102 0.01338
1000 727 1340 0.1 1 14.5 0.01202 0.1929 0.01204 0.3743 1.892 0.01204
Liquid 100 -173 -280 1 10 145 27.40 439.6 27.44 853.0 4311 27.44
149.14 -124.0 -191.2 1 10 145 22.42 359.6 22.45 697.7 3526 22.45
Gas 149.14 -124.0 -191.2 1 10 145 0.9785 15.70 0.9800 30.46 153.9 0.9800
160 -113 -172 1 10 145 0.8708 13.97 0.8721 27.11 137.0 0.8721
180 -93.2 -136 1 10 145 0.7362 11.81 0.7373 22.92 115.8 0.7373
200 -73.2 -99.7 1 10 145 0.6436 10.33 0.6446 20.03 101.3 0.6446
220 -53.2 -63.7 1 10 145 0.5745 9.217 0.5754 17.88 90.39 0.5754
240 -33.2 -27.7 1 10 145 0.5201 8.344 0.5209 16.19 81.83 0.5209
260 -13.2 8.3 1 10 145 0.4759 7.634 0.4766 14.81 74.86 0.4766
280 6.9 44.3 1 10 145 0.4390 7.043 0.4397 13.67 69.07 0.4397
300 26.9 80.3 1 10 145 0.4078 6.541 0.4084 12.69 64.15 0.4084
320 46.9 116 1 10 145 0.3809 6.110 0.3814 11.86 59.92 0.3814
340 66.9 152 1 10 145 0.3574 5.733 0.3579 11.12 56.22 0.3579
360 86.9 188 1 10 145 0.3367 5.402 0.3372 10.48 52.98 0.3372
400 127 260 1 10 145 0.3021 4.845 0.3025 9.402 47.52 0.3025
500 227 440 1 10 145 0.2406 3.859 0.2409 7.488 37.85 0.2409
600 327 620 1 10 145 0.2001 3.210 0.2004 6.229 31.48 0.2004
Liquid 100 -173 -280 5 50 725 27.59 442.5 27.63 858.7 4340 27.63
Supercritical
phase
200 -73.2 -99.7 5 50 725 5.471 87.76 5.479 170.3 860.6 5.479
250 -23.2 -9.7 5 50 725 3.117 50.00 3.121 97.02 490.3 3.121
300 26.9 80.3 5 50 725 2.180 34.97 2.183 67.85 342.9 2.183
350 76.9 170 5 50 725 1.745 28.00 1.748 54.33 274.6 1.748
400 127 260 5 50 725 1.533 24.60 1.536 47.73 241.2 1.536
500 227 440 5 50 725 1.201 19.27 1.203 37.39 189.0 1.203
600 327 620 5 50 725 0.9928 15.93 0.9943 30.90 156.2 0.9943
Liquid 100 -173 -280 10 100 1450 27.80 446.0 27.84 865.4 4374 27.84
Supercritical
phase
200 -73.2 -100 10 100 1450 16.59 266.2 16.62 516.5 2610 16.62
240 -33.2 -27.7 10 100 1450 8.004 128.4 8.016 249.1 1259 8.016
260 -13.2 8.3 10 100 1450 6.296 101.0 6.305 196.0 990.5 6.305
280 6.9 44.3 10 100 1450 5.330 85.51 5.338 165.9 838.6 5.338
300 26.9 80.3 10 100 1450 4.686 75.17 4.693 145.9 737.2 4.693
320 46.9 116 10 100 1450 4.214 67.61 4.221 131.2 663.0 4.221
340 66.9 152 10 100 1450 3.849 61.75 3.855 119.8 605.6 3.855
360 86.9 188 10 100 1450 3.554 57.01 3.559 110.6 559.1 3.559
400 127 260 10 100 1450 3.100 49.73 3.105 96.50 487.7 3.105
500 227 440 10 100 1450 2.389 38.32 2.392 74.35 375.8 2.392
600 327 620 10 100 1450 1.962 31.47 1.965 61.07 308.6 1.965
Supercritical
phase
200 -73.2 -100 100 1000 14500 25.50 409.0 25.53 793.6 4011 25.53
300 26.9 80.3 100 1000 14500 21.27 341.1 21.30 661.9 3346 21.30
400 127 260 100 1000 14500 17.88 286.8 17.91 556.6 2813 17.91
500 227 440 100 1000 14500 15.31 245.5 15.33 476.4 2408 15.33
600 327 620 100 1000 14500 13.36 214.3 13.38 415.8 2101 13.38

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Density units conversion:

Density converter

kilogram/cubic meter [kg/m3] = gram/liter [g/l], kilogram/liter [kg/l] = gram/cubic centimeter [g/cm3]= ton(metric)/cubic meter [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]

  • 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/in= 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)/yd= 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/in= 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 = 3.6127x10-5 lb/in3 = 1.6856 lb/yd3 = 0.010022 lb/gal(UK) = 0.008345 lb/gal(US liq) = 0.0007525 ton(long)/yd = 0.0008428 ton(short)/yd
  • 1 lb/ft3 = 27 lb/yd3 = 0.009259 oz/in= 0.0005787 lb/in= 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/in = 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/in = 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/in= 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)

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