Pounds per square inch (psi) to Millibars
Type a value in Pounds per square inch (psi) and get the result in Millibars, calculated exactly.
1 Pounds per square inch (psi) ≈ 68.94757293 Millibars
Precision
Exact factorRounded for display to about 10 significant digits.
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Formula
mbar = psi × 68.9475729317
To convert Pounds per square inch (psi) to Millibars, multiply the value by 68.9475729317.
Worked examples
- 1 psi × 68.9475729317 ≈ 68.94757293 mbar
- 100 psi × 68.9475729317 ≈ 6,894.757293 mbar
- 50 psi × 68.9475729317 ≈ 3,447.378647 mbar
This factor is exact by definition.
Conversion table
| Pounds per square inch (psi) | Millibars (mbar) |
|---|---|
| 1 | ≈ 68.94757 |
| 2 | ≈ 137.8951 |
| 3 | ≈ 206.8427 |
| 4 | ≈ 275.7903 |
| 5 | ≈ 344.7379 |
| 6 | ≈ 413.6854 |
| 7 | ≈ 482.633 |
| 8 | ≈ 551.5806 |
| 9 | ≈ 620.5282 |
| 10 | ≈ 689.4757 |
| 15 | ≈ 1,034.214 |
| 20 | ≈ 1,378.951 |
| 25 | ≈ 1,723.689 |
| 30 | ≈ 2,068.427 |
| 40 | ≈ 2,757.903 |
| 50 | ≈ 3,447.379 |
| 60 | ≈ 4,136.854 |
| 70 | ≈ 4,826.33 |
| 75 | ≈ 5,171.068 |
| 80 | ≈ 5,515.806 |
| 90 | ≈ 6,205.282 |
| 100 | ≈ 6,894.757 |
Values marked ≈ are rounded; the rest are exact.
Reverse table: Millibars to Pounds per square inch (psi)
| Millibars (mbar) | Pounds per square inch (psi) |
|---|---|
| 1 | ≈ 0.01450377 |
| 2 | ≈ 0.02900755 |
| 3 | ≈ 0.04351132 |
| 4 | ≈ 0.0580151 |
| 5 | ≈ 0.07251887 |
| 6 | ≈ 0.08702264 |
| 7 | ≈ 0.1015264 |
| 8 | ≈ 0.1160302 |
| 9 | ≈ 0.130534 |
| 10 | ≈ 0.1450377 |
| 15 | ≈ 0.2175566 |
| 20 | ≈ 0.2900755 |
| 25 | ≈ 0.3625943 |
| 30 | ≈ 0.4351132 |
| 40 | ≈ 0.580151 |
| 50 | ≈ 0.7251887 |
| 60 | ≈ 0.8702264 |
| 70 | ≈ 1.015264 |
| 75 | ≈ 1.087783 |
| 80 | ≈ 1.160302 |
| 90 | ≈ 1.30534 |
| 100 | ≈ 1.450377 |
Unit definitions
- Pounds per square inch (psi) psi
- One pound-force per square inch: about 6894.757 pascals, exact from the 1959 pound and inch.
- Millibars mbar
- One thousandth of a bar: exactly 100 pascals.
Questions people ask
Pounds per square inch (psi) to Millibars: what is the conversion factor?
One psi is ≈ 68.94757293 mbar.
How do I convert Pounds per square inch (psi) to Millibars?
Use the formula above. For example, 100 psi = ≈ 6,894.757293 mbar.
Is the conversion exact?
Yes. Both units have exact definitions, so the factor is exact; a result is only rounded when its decimals never end.
Factors checked 19 October 2026.