PSI to Millibars Converter
Convert psi (psi) to millibars (mbar) instantly. Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars.
Result
- Millibars
- 68.9476 mbar
How to use the psi to millibars converter
- Enter the psi (psi).
- The results update as you type, or press Calculate.
- Read the millibars first, then the supporting figures below it.
Formula
Millibars = psi × 68.94757
Worked example
For example, with these inputs:
- PSI (psi): 1
the calculator returns:
- Millibars: 68.9476 mbar
PSI to Millibars table
| PSI | Millibars |
|---|---|
| 1 psi | 68.9476 mbar |
| 2 psi | 137.8951 mbar |
| 5 psi | 344.7378 mbar |
| 10 psi | 689.4757 mbar |
| 20 psi | 1,378.95 mbar |
| 25 psi | 1,723.69 mbar |
| 50 psi | 3,447.38 mbar |
| 100 psi | 6,894.76 mbar |
| 250 psi | 17,236.89 mbar |
| 500 psi | 34,473.78 mbar |
| 1,000 psi | 68,947.57 mbar |
About this conversion
Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
Frequently asked questions
How many millibars are in one psi?
1 psi = 68.9476 mbar.
How do I convert psi to mbar?
Millibars = psi × 68.94757.