25 inches of mercury to PSI
25 inHg = 12.278854 psi. Change the amount below, or read the formula and the reference table further down.
25 inches 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 25 inHg.
| Inches of mercury (inHg) | PSI (psi) |
|---|---|
| 15 | 7.3673 |
| 16 | 7.8585 |
| 17 | 8.3496 |
| 18 | 8.8408 |
| 19 | 9.3319 |
| 20 | 9.8231 |
| 21 | 10.3142 |
| 22 | 10.8054 |
| 23 | 11.2965 |
| 24 | 11.7877 |
| 25 | 12.2789 |
| 26 | 12.77 |
| 27 | 13.2612 |
| 28 | 13.7523 |
| 29 | 14.2435 |
| 30 | 14.7346 |
| 31 | 15.2258 |
| 32 | 15.7169 |
| 33 | 16.2081 |
| 34 | 16.6992 |
| 35 | 17.1904 |
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 25 inches of mercury in PSI?
- 25 inches of mercury is 12.278854 PSI.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.