Convert inch of mercury to pound per square inch
1 inHg = 0.4911541475 psi
1 inHg = 0.49115 psi
1 inHg in every pressure unit
| microbar | 33,864 μbar |
| barye | 33,864 Ba |
| millitorr | 25,400 mTorr |
| pascal | 3,386.4 Pa |
| millimeter of water column | 345.32 mmH₂O |
| pound per square foot | 70.726 lb/ft² |
| centimeter of water column | 34.532 cmH₂O |
| hectopascal | 33.864 hPa |
| millibar | 33.864 mbar |
| torr | 25.4 Torr |
| millimeter of mercury | 25.4 mmHg |
| inch of water column | 13.595 in w.g. |
| kilopascal | 3.3864 kPa |
| foot of water column | 1.1329 ft H₂O |
| inch of mercury | 1 inHg |
| pound per square inch | 0.49115 psi |
| meter of water column | 0.34532 m H₂O |
| decibar | 0.33864 dbar |
| kilogram-force per square centimeter | 0.034532 kgf/cm² |
| bar | 0.033864 bar |
| atmosphere | 0.033421 atm |
| megapascal | 0.0033864 MPa |
| kip per square inch | 0.00049115 ksi |
| gigapascal | 0.0000033864 GPa |
| million pounds per square inch | 4.9115e-07 Mpsi |
How the conversion works
Multiply by 0.4911541475 to go from inch of mercury to pound per square inch, or divide by it to go back. Every conversion on this site routes through the SI value (Pa) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? pound per square inch to inch of mercury — 1 psi = 2.036020677 inHg.
inch of mercury to pound per square inch — common values
| 1 inHg | 0.49115415 psi |
| 2 inHg | 0.98230829 psi |
| 3 inHg | 1.4734624 psi |
| 5 inHg | 2.4557707 psi |
| 10 inHg | 4.9115415 psi |
| 15 inHg | 7.3673122 psi |
| 20 inHg | 9.8230829 psi |
| 25 inHg | 12.278854 psi |
| 50 inHg | 24.557707 psi |
| 75 inHg | 36.836561 psi |
| 100 inHg | 49.115415 psi |
| 250 inHg | 122.78854 psi |
| 500 inHg | 245.57707 psi |
| 1000 inHg | 491.15415 psi |