Pressure Converter
Convert between pascals, kilopascals, bar, psi, atmospheres and mmHg. One standard atmosphere is 101.325 kPa, or about 14.696 psi.
Enter a value
Result
1 bar =
14.5038 psi
1 × 14.5038 = 14.5038
1 atm = 101,325 Pa · 1 bar = 100,000 Pa
Show the working
- 1. Convert 1 bar to pascals: 1 × 100,000 = 100,000.
- 2. Convert to psi: 100,000 ÷ 6,894.76 = 14.5038.
1 bar in every unit
Common pressures
- Car tyre
- 2.2 bar (32 psi)
- Road bike tyre
- 6-8 bar
- Sea-level air pressure
- 1,013 mbar
- Normal blood pressure
- 120/80 mmHg
Good to know: One bar is 100 kPa, or about 14.5 psi.
About this tool
Convert pressure between PSI, bar, kPa, mmHg, and ATM — for tires, weather, engineering, and medical readings.
Formula
1 bar = 14.504 PSI. 1 ATM = 101.325 kPa. 1 mmHg = 0.133 kPa.
Reference values
- 1 ATM = 14.7 PSI
- 1 bar = 100 kPa
- 32 PSI = typical car tire pressure
Questions people ask
How do I convert psi to bar?
Divide by 14.5038. For example, 32 psi is about 2.2 bar.
What tyre pressure should I use?
Use the figure in your car's manual or on the door-frame label, not the maximum printed on the tyre.
What is 1 atmosphere in mmHg?
760 mmHg, also called torr.
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How we calculate this
We use the standard published formula or definition for this calculation, and we show the working so you can check it. Source: NIST Special Publication 811, Guide for the Use of the International System of Units.
Spotted a mistake? Tell us and we'll check it. How we check our calculators