Millibars to PSI Converter
Convert millibars (mbar) to psi (psi) instantly. Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars.
Result
- PSI
- 0.014504 psi
How to use the millibars to psi converter
- Enter the millibars (mbar).
- The results update as you type, or press Calculate.
- Read the psi first, then the supporting figures below it.
Formula
PSI = millibars × 0.0145037744
Worked example
For example, with these inputs:
- Millibars (mbar): 1
the calculator returns:
- PSI: 0.014504 psi
Millibars to PSI table
| Millibars | PSI |
|---|---|
| 1 mbar | 0.014504 psi |
| 2 mbar | 0.029008 psi |
| 5 mbar | 0.072519 psi |
| 10 mbar | 0.145038 psi |
| 20 mbar | 0.290075 psi |
| 25 mbar | 0.362594 psi |
| 50 mbar | 0.725189 psi |
| 100 mbar | 1.4504 psi |
| 250 mbar | 3.6259 psi |
| 500 mbar | 7.2519 psi |
| 1,000 mbar | 14.5038 psi |
About this conversion
Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars.
Unit conversion is simply multiplication by a fixed ratio. The ratio between two units of the same quantity never changes, so once you know it you can convert any value in either direction.
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
Frequently asked questions
How many psi are in one millibar?
1 mbar = 0.014504 psi.
How do I convert mbar to psi?
PSI = millibars × 0.0145037744.