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Pressure Conversion Table
From Transwiki
Contents |
[edit] Pressure Conversions
The following information may have errors; most are accurate, but is not to be used by anyone who has ever met a lawyer
[edit] Conversion Factors
| To convert | Into | Multiply by |
|---|---|---|
| atmosphere | bar | 1.01295 |
| atmosphere | dynes/cm2 | 1.01295 x 106 |
| atmosphere | in. Hg | 29.9213 |
| atmosphere | in. water | 406.86 |
| atmosphere | kg/cm2 | 1.03325 |
| atmosphere | mbar | 1012.95 |
| atmosphere | mtorr or micron Hg | 7.6 x 105 |
| atmosphere | Pa or N/m2 | 1.01295 x 105 |
| atmosphere | PSI or lb/in2 | 14.696 |
| atmosphere | torr or mm Hg | 760 |
| bar | atmosphere | 0.9872 |
| bar | dynes/cm2 | 1 x 106 |
| bar | in. Hg | 29.54 |
| bar | in. water | 401.65 |
| bar | kg/cm2 | 1.02 |
| bar | mbar | 1000 |
| bar | mtorr or micron Hg | 7.5028 x 105 |
| bar | Pa or N/m2 | 1 x 105 |
| bar | psi or lb/in2 | 14.503861 |
| bar | torr or mm Hg | 750.2838 |
| dynes/cm2 | atmosphere | 9.872 x 10-7 |
| dynes/cm2 | bar | 1 x 10-6 |
| dynes/cm2 | in. Hg | 2.954 x 10-5 |
| dynes/cm2 | in. water | 4.0165 x 10-4 |
| dynes/cm2 | kg/cm2 | 1.0200 x 10-6 |
| dynes/cm2 | mbar | 1 x 10-3 |
| dynes/cm2 | mtorr or micron Hg | 0.75028 |
| dynes/cm2 | Pa or N/m2 | 0.1 |
| dynes/cm2 | psi or lb/in2 | 1.4508 x 10-5 |
| dynes/cm2 | torr or mm Hg | 7.5028 x 10-4 |
| in. Hg | atmosphere | 3.342 x 10-2 |
| in. Hg | bar | 3.385 x 10-2 |
| in. Hg | dynes/cm2 | 3.385 x 104 |
| in. Hg | in. water | 13.598 |
| in. Hg | kg/cm2 | 3.4532 x 10-2 |
| in. Hg | mbar | 33.85 |
| in. Hg | mtorr or micron Hg | 2.54 x 104 |
| in. Hg | Pa or N/m2 | 3385 |
| in. Hg | psi or lb/in2 | 0.4912 |
| in. Hg | torr or mm Hg | 25.4 |
| in. water | atmosphere | 2.458 x 10-3 |
| in. water | bar | 2.489 x 10-3 |
| in. water | dynes/cm2 | 2.489 x 103 |
| in. water | kg/cm2 | 2.5396 x 10-3 |
| in. water | in. Hg | 7.354 x 10-2 |
| in. water | mbar | 2.489 |
| in. water | mtorr or micron Hg | 1.868 x 10-3 |
| in. water | Pa or N/m2 | 248.9 |
| in. water | psi or lb/in2 | 3.612 x 10-2 |
| in. water | torr or mm Hg | 1.868 |
| kg/cm2 | atmosphere | 0.9678 |
| kg/cm2 | bar | 0.9804 |
| kg/cm2 | dynes/cm2 | 9.804 x 105 |
| kg/cm2 | in. Hg | 28.958 |
| kg/cm2 | in. water | 393.76 |
| kg/cm2 | mbar | 9.804 x 102 |
| kg/cm2 | mtorr or micron Hg | 7.3554 x 105 |
| kg/cm2 | Pa or N/m2 | 9.804 x 104 |
| kg/cm2 | psi or lb/in2 | 14.223 |
| kg/cm2 | torr or mm Hg | 7.3554 x 102 |
| mbar | atmosphere | 9.872 x 10-4 |
| mbar | bar | 0.001 |
| mbar | dynes/cm2 | 1000 |
| mbar | kg/cm2 | 1.0200 x 10-3 |
| mbar | in. Hg | 2.954 x 10-2 |
| mbar | in. water | 0.4018 |
| mbar | mtorr or micron Hg | 7.5028 x 102 |
| mbar | Pa or N/m2 | 100 |
| mbar | psi or lb/in2 | 1.450 x 10-2 |
| mbar | torr or mm Hg | 0.75028 |
| mtorr or micron Hg | atmosphere | 1.316 x 10-6 |
| mtorr or micron Hg | bar | 1.3328 x 10-6 |
| mtorr or micron Hg | dynes/cm2 | 1.3328 |
| mtorr or micron Hg | kg/cm2 | 1.3595 x 10-6 |
| mtorr or micron Hg | in. Hg | 3.937 x 10-5 |
| mtorr or micron Hg | in. water | 5.353 x 10-4 |
| mtorr or micron Hg | mbar | 1.3328 x 10-3 |
| mtorr or micron Hg | Pa or N/m2 | 0.13328 |
| mtorr or micron Hg | psi or lb/in2 | 1.934 x 10-5 |
| mtorr or micron Hg | torr or mm Hg | 1 x 10-3 |
| Pa or N/m2 | atmosphere | 9.869 x 10-6 |
| Pa or N/m2 | bar | 1 x 10-5 |
| Pa or N/m2 | dynes/cm2 | 10 |
| Pa or N/m2 | kg/cm2 | 1.020 x 10-5 |
| Pa or N/m2 | in. Hg | 2.954 x 10-4 |
| Pa or N/m2 | in. water | 4.018 x 10-3 |
| Pa or N/m2 | mbar | 0.01 |
| Pa or N/m2 | mtorr or micron Hg | 7.5028 |
| Pa or N/m2 | psi or lb/in2 | 1.4508 x 10-4 |
| Pa or N/m2 | torr or mm Hg | 7.5028 x 10-3 |
| psi or lb/in2 | atmosphere | 0.068046 |
| psi or lb/in2 | bar | 0.068948 |
| psi or lb/in2 | dynes/cm2 | 6.8948 x 104 |
| psi or lb/in2 | kg/cm2 | 7.0309 x 10-2 |
| psi or lb/in2 | in. Hg | 2.036 |
| psi or lb/in2 | in. water | 27.68 |
| psi or lb/in2 | mbar | 68.948 |
| psi or lb/in2 | mtorr or micron Hg | 5.171 x 104 |
| psi or lb/in2 | Pa or N/m2 | 6.8927 x 103 |
| psi or lb/in2 | torr or mm Hg | 51.71 |
| torr or mm Hg | atmosphere | 1.3158 x 10-3 |
| torr or mm Hg | bar | 1.3328 x 10-3 |
| torr or mm Hg | dynes/cm2 | 1.3328 x 103 |
| torr or mm Hg | kg/cm2 | 1.3595 x 10-3 |
| torr or mm Hg | in. Hg | 3.937 x 10-2 |
| torr or mm Hg | in. water | 0.5353 |
| torr or mm Hg | mbar | 1.3328 |
| torr or mm Hg | mtorr or micron Hg | 1000 |
| torr or mm Hg | Pa or N/m2 | 133.28 |
| torr or mm Hg | psi or lb/in2 | 1.934 x 10-2 |
[edit] Elevation to Air pressure
- < 36089 ft; Alt = 145422.156 * (1-(psi/14.697)^0.190263105)
- > 36089 ft; Alt = 20805.8257# * log(3.282807/Psi) + 36089.2388
- < 36089 ft; Psi = 14.697 * (1 - Alt/145422.156)^5.255879746
- > 36089 ft; Psi = 3.282807 / exp((Alt - 36089.2388)/20805.8257)
Temperature does have an effect, but these formulas represent standard day conditions. On a standard day the temperature is known and the lapse rate (temp change with altitude) is fixed by the ideal gas law. By definition the standard atmosphere is dry air.
| Elevation in feet | psi | Torr | Inches of HG | Inches of HG - standard atmosphere | Pa |
|---|---|---|---|---|---|
| -3280 | 16.52 | 854.3318 | 33.63472 | -3.70552 | 113901.224 |
| -1640 | 15.59 | 806.2369 | 31.74124 | -1.81204 | 107489.109 |
| 14.7 | 760.2105 | 29.9292 | 101352.784 | ||
| 820 | 14.26 | 737.4559 | 29.03336 | 0.89584 | 98319.0955 |
| 1640 | 13.85 | 716.2528 | 28.1986 | 1.7306 | 95492.2491 |
| 2461 | 13.44 | 695.0496 | 27.36384 | 2.56536 | 92665.4028 |
| 3281 | 13.03 | 673.8465 | 26.52908 | 3.40012 | 89838.5564 |
| 4101 | 12.64 | 653.6776 | 25.73504 | 4.19416 | 87149.605 |
| 4921 | 12.26 | 634.0259 | 24.96136 | 4.96784 | 84529.601 |
| 5742 | 11.89 | 614.8914 | 24.20804 | 5.72116 | 81978.5446 |
| 6562 | 11.53 | 596.274 | 23.47508 | 6.45412 | 79496.4356 |
| 8202 | 10.83 | 560.0735 | 22.04988 | 7.87932 | 74670.1125 |
| 9843 | 10.17 | 525.9416 | 20.70612 | 9.22308 | 70119.5793 |
| 11483 | 9.54 | 493.3611 | 19.42344 | 10.50576 | 65775.8886 |
| 13123 | 8.94 | 462.3321 | 18.20184 | 11.72736 | 61639.0402 |
| 14764 | 8.38 | 433.3717 | 17.06168 | 12.86752 | 57777.9818 |
| 16404 | 7.84 | 405.4456 | 15.96224 | 13.96696 | 54054.8183 |
| 18045 | 7.33 | 379.071 | 14.92388 | 15.00532 | 50538.4972 |
| 19685 | 6.85 | 354.2478 | 13.9466 | 15.9826 | 47229.0185 |
| 21325 | 6.39 | 330.4589 | 13.01004 | 16.91916 | 44057.4348 |
| 22966 | 5.96 | 308.2214 | 12.13456 | 17.79464 | 41092.6935 |
| 24606 | 5.56 | 287.5354 | 11.32016 | 18.60904 | 38334.7946 |
| 26247 | 5.17 | 267.3666 | 10.52612 | 19.40308 | 35645.8432 |
| 27887 | 4.81 | 248.7492 | 9.79316 | 20.13604 | 33163.7342 |
| 29528 | 4.47 | 231.1661 | 9.10092 | 20.82828 | 30819.5201 |
| 31168 | 4.15 | 214.6173 | 8.4494 | 21.4798 | 28613.201 |
| 32808 | 3.84 | 198.5856 | 7.81824 | 22.11096 | 26475.8294 |
| 36.089 | 3.29 | 170.1424 | 6.69844 | 23.23076 | 22683.7184 |
| 39370 | 2.81 | 145.3192 | 5.72116 | 24.20804 | 19374.2397 |
| 42651 | 2.41 | 124.6332 | 4.90676 | 25.02244 | 16616.3408 |
| 45932 | 2.06 | 106.5329 | 4.19416 | 25.73504 | 14203.1793 |
| 49212 | 1.74 | 89.9841 | 3.54264 | 26.38656 | 11996.8602 |
| 52493 | 1.5 | 77.5725 | 3.054 | 26.8752 | 10342.1208 |
| 55774 | 1.28 | 66.1952 | 2.60608 | 27.32312 | 8825.27645 |
| 59055 | 1.1 | 56.8865 | 2.2396 | 27.6896 | 7584.22195 |
| 62336 | 0.94 | 48.6121 | 1.91384 | 28.01536 | 6481.0624 |
| 65617 | 0.8 | 41.372 | 1.6288 | 28.3004 | 5515.79778 |
| 82021 | 0.37 | 19.13455 | 0.75332 | 29.17588 | 2551.05648 |
| 984245 | 0.17 | 8.79155 | 0.34612 | 29.58308 | 1172.10703 |
| 104986 | 0.13 | 6.72295 | 0.26468 | 29.66452 | 896.31714 |
[edit] end
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