Convert PSI to millibars
1 psi = 68.947573 mbar. Change the amount below, or read the formula and the reference table further down.
1 PSI equals
millibars
1 psi = 68.947573 mbar
The formula
PSI and millibars both measure pressure from the same zero, so a single multiplier does the job.
mbar = psi × 68.94757293
Going the other way? Convert millibars to PSI.
PSI to millibars table
Common values, rounded for reading.
| PSI (psi) | Millibars (mbar) |
|---|---|
| 1 | 68.9476 |
| 2 | 137.9 |
| 3 | 206.84 |
| 4 | 275.79 |
| 5 | 344.74 |
| 6 | 413.69 |
| 7 | 482.63 |
| 8 | 551.58 |
| 9 | 620.53 |
| 10 | 689.48 |
| 15 | 1,034.21 |
| 20 | 1,378.95 |
| 25 | 1,723.69 |
| 30 | 2,068.43 |
| 40 | 2,757.9 |
| 50 | 3,447.38 |
| 75 | 5,171.07 |
| 100 | 6,894.76 |
| 250 | 17,236.89 |
| 500 | 34,473.79 |
| 1,000 | 68,947.57 |
Questions people ask
- How many millibars are in a PSI?
- One PSI equals 68.94757293 millibars.
- How do I convert PSI to millibars by hand?
- Multiply the number of PSI by 68.94757293. For a rough check, 68.9 is close enough for most everyday use.
- What is 1 PSI in millibars?
- 1 PSI is 68.947573 millibars.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.