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International Standard Atmosphere

International standard atmosphere in elevation -2000 to 30000 metre - pressure, temperature, density, viscosity, thermal conductivity and velocity of sound

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International Standard Atmosphere properties like pressure, temperature, density, viscosity, thermal conductivity and velocity of sound:

Elevation
- z -
(m)

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Temperature
- T -
(K)

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Pressure
- p -
(bar)

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Relative Density
- ρ/ρo -
Kinematic Viscosity
- ν -
x 10-5 
(m2/s)
Thermal Conductivity
- k -
x 10-2
(W/m K)
Speed of Sound
- c -
(m/s)
-2000 301.2 1.2778 1.2067 1.253 2.636 347.9
-1500 297.9 1.2070 1.1522 1.301 2.611 346.0
-1000 294.7 1.1393 1.0996 1.352 2.585 344.1
-500 291.4 1.0748 1.0489 1.405 2.560 342.2
0 288.15 1.01325 1.0000 1.461 2.534 340.3
500 284.9 0.9546 0.9529 1.520 2.509 338.4
1000 281.7 0.8988 0.9075 1.581 2.483 336.4
1500 278.4 0.8456 0.8638 1.646 2.457 334.5
2000 275.2 0.7950 0.8217 1.715 2.431 332.5
2500 271.9 0.7469 0.7812 1.787 2.405 330.6
3000 268.7 0.7012 0.7423 1.863 2.379 328.6
3500 265.4 0.6578 0.7048 1.943 2.353 326.6
4000 262.2 0.6166 0.6689 2.028 2.327 324.6
4500 258.9 0.5775 0.6343 2.117 2.301 322.6
5000 255.7 0.5405 0.6012 2.211 2.275 320.5
5500 252.4 0.5054 0.5694 2.311 2.248 318.5
6000 249.2 0.4722 0.5389 2.416 2.222 316.5
6500 245.9 0.4408 0.5096 2.528 2.195 314.4
7000 242.7 0.4111 0.4817 2.646 2.169 312.3
7500 239.5 0.3830 0.4549 2.771 2.142 310.2
8000 236.2 0.3565 0.4292 2.904 2.115 308.1
8500 233.0 0.3315 0.4047 3.046 2.088 306.0
9000 229.7 0.3080 0.3813 3.196 2.061 303.8
9500 226.5 0.2858 0.3589 3.355 2.034 301.7
10000 223.3 0.2650 0.3376 3.525 2.007 299.8
10500 220.0 0.2454 0.3172 3.706 1.980 297.4
11000 216.8 0.2270 0.2978 3.899 1.953 295.2
11500 216.7 0.2098 0.2755 4.213 1.952 295.1
12000 216.7 0.1940 0.2546 4.557 1.952 295.1
12500 216.7 0.1793 0.2354 4.930 1.952 295.1
13000 216.7 0.1658 0.2176 5.333 1.952 295.1
13500 216.7 0.1533 0.2012 5.768 1.952 295.1
14000 216.7 0.1417 0.1860 6.239 1.952 295.1
14500 216.7 0.1310 0.1720 6.749 1.952 295.1
15000 216.7 0.1211 0.1590 7.300 1.952 295.1
15500 216.7 0.1120 0.1470 7.895 1.952 295.1
16000 216.7 0.1035 0.1359 8.540 1.952 295.1
16500 216.7 0.09572 0.1256 9.237 1.952 295.1
17000 216.7 0.08850 0.1162 9.990 1.952 295.1
17500 216.7 0.08182 0.1074 10.805 1.952 295.1
18000 216.7 0.07565 0.09930 11.686 1.952 295.1
18500 216.7 0.06995 0.09182 12.639 1.952 295.1
19000 216.7 0.06467 0.08489 13.670 1.952 295.1
19500 216.7 0.05980 0.07850 14.784 1.952 295.1
20000 216.7 0.05529 0.07258 15.989 1.952 295.1
22000 218.6 0.04047 0.05266 22.201 1.968 296.4
24000 220.6 0.02972 0.03832 30.743 1.985 297.7
26000 222.5 0.02188 0.02797 42.439 2.001 299.1
28000 224.5 0.01616 0.02047 58.405 2.018 300.4
30000 226.5 0.01197 0.01503 80.134 2.034 301.7
  • 1 m (meter) = 3.2808 ft
  • 1 bar = 105 Pa (N/m2) = 0.1 N/mm2 = 10,197 kp/m2 = 10.20 m H2O = 0.9869 atm = 14.50 psi (lbf/in2) = 106 dyn/cm2 = 750 mmHg
  • 1 W/(m K) = 0.85984 kcal/(h m oC) = 0.5779 Btu/(ft h oF)
  • 1 m/s = 3.6 km/h = 196.85 ft/min = 2.237 mph
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Topics

Unit Converters

Temperature

oC
oF


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Length

m
km
in
ft
yards
miles
naut miles


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Area

m2
km2
in2
ft2
miles2
acres


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Volume

m3
liters
in3
ft3
us gal


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Weight

kgf
N
lbf


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Velocity

m/s
km/h
ft/min
ft/s
mph
knots


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Pressure

Pa (N/m2)
bar
mm H2O
kg/cm2
psi
inches H2O


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Flow

m3/s
m3/h
US gpm
cfm


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