1 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
Values either side of 1 psi.
| PSI (psi) | Millibars (mbar) |
|---|---|
| -4 | -275.79 |
| -3.5 | -241.32 |
| -3 | -206.84 |
| -2.5 | -172.37 |
| -2 | -137.9 |
| -1.5 | -103.42 |
| -1 | -68.9476 |
| -0.5 | -34.4738 |
| 0 | 0 |
| 0.5 | 34.4738 |
| 1 | 68.9476 |
| 1.5 | 103.42 |
| 2 | 137.9 |
| 2.5 | 172.37 |
| 3 | 206.84 |
| 3.5 | 241.32 |
| 4 | 275.79 |
| 4.5 | 310.26 |
| 5 | 344.74 |
| 5.5 | 379.21 |
| 6 | 413.69 |
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.