1 inch of mercury to PSI
1 inHg = 0.49115415 psi. Change the amount below, or read the formula and the reference table further down.
1 inch of mercury equals
PSI
1 inHg = 0.49115415 psi
The formula
Inches of mercury and PSI both measure pressure from the same zero, so a single multiplier does the job.
psi = inHg × 0.4911541475
Going the other way? Convert PSI to inches of mercury.
Inches of mercury to PSI table
Values either side of 1 inHg.
| Inches of mercury (inHg) | PSI (psi) |
|---|---|
| -4 | -1.9646 |
| -3.5 | -1.719 |
| -3 | -1.4735 |
| -2.5 | -1.2279 |
| -2 | -0.982308 |
| -1.5 | -0.736731 |
| -1 | -0.491154 |
| -0.5 | -0.245577 |
| 0 | 0 |
| 0.5 | 0.245577 |
| 1 | 0.491154 |
| 1.5 | 0.736731 |
| 2 | 0.982308 |
| 2.5 | 1.2279 |
| 3 | 1.4735 |
| 3.5 | 1.719 |
| 4 | 1.9646 |
| 4.5 | 2.2102 |
| 5 | 2.4558 |
| 5.5 | 2.7013 |
| 6 | 2.9469 |
Questions people ask
- How many PSI are in a inch of mercury?
- One inch of mercury equals 0.4911541475 PSI.
- How do I convert inches of mercury to PSI by hand?
- Multiply the number of inches of mercury by 0.4911541475. For a rough check, 0.491 is close enough for most everyday use.
- What is 1 inch of mercury in PSI?
- 1 inch of mercury is 0.49115415 PSI.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.