PSI to inHg Converter
Pressure · unit-converter
Convert PSI to inHg with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations bridge through pascal with fixed definitions (standard atmosphere = 101,325 Pa; torr and mmHg = atm/760; plus industrial/manometer units like kgf/cm², inHg, inH2O, and mmH2O).
About PSI
Pounds-force per square inch (PSI) is common for tires, hydraulics, and US industrial equipment.
About inHg
Inches of mercury (inHg) is used in aviation altimetry and vacuum readings in some US contexts.
How to convert psi to inch of mercury (inhg)
1 psi equals 2.0360209673849097 inhg in this tool (via pascal):
1 psi = (6894.757293168 Pa ÷ 3386.38815789 Pa) inhg = 2.0360209673849097 inhg
Each psi carries 6894.757293168 Pa and each inhg 3386.38815789 Pa, so one psi equals 6894.757293168 ÷ 3386.38815789 inhg.
Let p(psi) be pressure in PSI (psi), and p(inhg) in inHg (inhg). Then:
p(inhg) = p(psi) × (6894.757293168 / 3386.38815789)
Equivalently, divide by how many psi fit into one inhg (Pa per inhg divided by Pa per psi):
p(inhg) = p(psi) ÷ 0.4911540774967619
Examples
Example #1: Convert 1 psi to inhg
1 psi = 1 psi × (6894.757293168/3386.38815789) inhg = 2.0360209674 inhg
1 psi = 1 psi ÷ 0.4911540774967619 = 2.0360209674 inhg
1 psi × (6,894.757293168/3,386.38815789) = 2.036021 inhg
Example #2: Convert 10 psi to inhg
10 psi = 10 psi × (6894.757293168/3386.38815789) inhg = 20.3602096738 inhg
10 psi = 10 psi ÷ 0.4911540774967619 = 20.3602096738 inhg
10 psi × (6,894.757293168/3,386.38815789) = 20.360210 inhg
Summary
To convert PSI to inHg, multiply the value in psi by (6894.757293168 Pa per psi) / (3386.38815789 Pa per inhg). Equivalently: value_inhg = value_psi × (6894.757293168 / 3386.38815789). Numerically, 1 psi equals 2.0360209673849097 inhg.
Relationship context
Both PSI and inHg are converted by fixed multiples of the pascal. Multiplying by (Pa per psi) ÷ (Pa per inhg) gives the same result as passing through pascal, keeping bar, atm, PSI, kPa, hPa, torr, and mmHg consistent on the hub.
Conversion tables
| PSI (psi) | inHg (inhg) |
|---|---|
| 0.1 | 0.2036020967 |
| 1 | 2.0360209674 |
| 2 | 4.0720419348 |
| 3 | 6.1080629022 |
| 4 | 8.1440838695 |
| 5 | 10.1801048369 |
| 6 | 12.2161258043 |
| 7 | 14.2521467717 |
| 8 | 16.2881677391 |
| 9 | 18.3241887065 |
| PSI (psi) | inHg (inhg) |
|---|---|
| 10 | 20.3602096738 |
| 20 | 40.7204193477 |
| 30 | 61.0806290215 |
| 40 | 81.4408386954 |
| 50 | 101.801048369 |
| 60 | 122.161258043 |
| 70 | 142.521467717 |
| 80 | 162.881677391 |
| 90 | 183.241887065 |
| 100 | 203.602096738 |