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Pressure Conversion Information Tables

These data tables are provided as general formulae for converting from one pressure designation to another, and as general atmospheric pressure, based on elevation but with no consideration for temperature, other than standard. You might find our Pressure Altitude Calculator, as well as our Pressure Altitude To Density Altitude Conversion Table or our Density Altitude Calculator pages useful. You may also want to refer to our Virtual Pressure Conversion Table for a different presentation.








Pressure Conversion Formulae

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 14.508
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 10-3
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 0.06805
psi or lb/in2 bar 0.06893
psi or lb/in2 dynes/cm2 6.8927 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 68.97
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 10-3
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


Elevation In Feet To Standard Air Pressure

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
0 14.7 760.2105 29.9292 0 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
Version 1.4.2


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