International vacuum/pressure conversion table | ||||||||
---|---|---|---|---|---|---|---|---|
Unit | bar | N/cm2 | kPa | atm, kp/cm2 | m H2O | torr, mm Hg | in Hg | psi |
bar | 1 | 10 | 100 | 1.0197 | 1.0197 | 750.06 | 29.54 | 14.5 |
N/cm2 | 0.1 | 1 | 10 | 0.1019 | 0.1019 | 75.006 | 2.954 | 1.45 |
kPa | 0.01 | 0.1 | 1 | 0.0102 | 0.0102 | 7.5006 | 0.2954 | 0.145 |
atm, kp/cm2 | 0.9807 | 9.807 | 98.07 | 1 | 1 | 735.56 | 28.97 | 14.22 |
m H2O | 0.9807 | 9.807 | 98.07 | 1 | 1 | 735.56 | 28.97 | 14.22 |
torr, mm Hg | 0.00133 | 0.01333 | 0.1333 | 0.00136 | 0.00136 | 1 | 0.0394 | 0.0193 |
in Hg | 0.0338 | 0.3385 | 3.885 | 0.03446 | 0.03446 | 25.35 | 1 | 0.49 |
psi | 0.0689 | 0.6896 | 6.896 | 0.0703 | 0.0703 | 51.68 | 2.035 | 1 |
International vacuum/pressure conversion table with absolute and relative value comparison | ||||||||
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Relative vacuum [%] | Residual pressure, absolute [bar] | Pressure, relative [bar] | N/cm2 | kPa | atm, kp/cm2 | m H2O | torr, mm Hg | in Hg |
10 | 0.9 | –0.101 | –1.01 | –10.1 | –0.103 | –0.103 | –76 | –3 |
20 | 0.8 | –0.203 | –2.03 | –20.3 | –0.207 | –0.207 | –152 | –6 |
30 | 0.7 | –0.304 | –3.04 | –30.4 | –0.31 | –0.31 | –228 | –9 |
40 | 0.6 | –0.405 | –4.05 | –40.5 | –0.413 | –0.413 | –304 | –12 |
50 | 0.5 | –0.507 | –5.07 | –50.7 | –0.517 | –0.517 | –380 | –15 |
60 | 0.4 | –0.608 | –6.08 | –60.8 | –0.62 | –0.62 | –456 | –18 |
70 | 0.3 | –0.709 | –7.09 | –70.9 | –0.723 | –0.723 | –532 | –21 |
80 | 0.2 | –0.811 | –8.11 | –81.1 | –0.827 | –0.827 | –608 | –24 |
90 | 0.1 | –0.912 | –9.12 | –91.2 | –0.93 | –0.93 | –684 | –27 |