Convert millibars to PSI
1 mbar = 0.01450377 psi. Change the amount below, or read the formula and the reference table further down.
1 millibar equals
PSI
1 mbar = 0.01450377 psi
The formula
Millibars and PSI both measure pressure from the same zero, so a single multiplier does the job.
psi = mbar × 0.0145037738
Going the other way? Convert PSI to millibars.
Millibars to PSI table
Common values, rounded for reading.
| Millibars (mbar) | PSI (psi) |
|---|---|
| 1 | 0.014504 |
| 2 | 0.029008 |
| 3 | 0.043511 |
| 4 | 0.058015 |
| 5 | 0.072519 |
| 6 | 0.087023 |
| 7 | 0.101526 |
| 8 | 0.11603 |
| 9 | 0.130534 |
| 10 | 0.145038 |
| 15 | 0.217557 |
| 20 | 0.290075 |
| 25 | 0.362594 |
| 30 | 0.435113 |
| 40 | 0.580151 |
| 50 | 0.725189 |
| 75 | 1.0878 |
| 100 | 1.4504 |
| 250 | 3.6259 |
| 500 | 7.2519 |
| 1,000 | 14.5038 |
Questions people ask
- How many PSI are in a millibar?
- One millibar equals 0.0145037738 PSI.
- How do I convert millibars to PSI by hand?
- Multiply the number of millibars by 0.0145037738. For a rough check, 0.015 is close enough for most everyday use.
- What is 1 millibar in PSI?
- 1 millibar is 0.01450377 PSI.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.