Pressure Converter
Convert pressure instantly between bar, psi, kilopascal, atmospheres and mmHg. Whether you are checking tyre pressure, reading a weather chart or working on hydraulics, this free tool updates live as you type.
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How to use
- Enter your pressure value in the box above.
- Choose the unit it is measured in — bar, psi, pascal, atm or mmHg.
- The converted value appears instantly; try another unit to cross-check.
- For tyres and weather, see the note for the units people normally use.
Tips
- Tyre pressure is usually read in psi or bar; weather pressure in mbar or inHg.
- Convert gauge and absolute pressures separately — they are not interchangeable.
- For safety-critical work like tyres or hydraulics, recheck with a physical gauge.
Note
Tyre pressure is usually in psi or bar, blood pressure in mmHg, and weather pressure in mbar or inHg.