How to use the Pressure Converter
- Type the pressure you want to convert.
- Choose the unit you're converting from and the unit you want.
- Read the result instantly. Use the swap button to convert the other way.
- Check the tables below for every unit and common values.
What does this tool do?
Tire pressures are given in psi in the US and in bar or kPa in much of the world. Weather uses hectopascals (hPa, the same as millibars) or inches of mercury, and blood pressure uses mmHg.
Why use it?
- Check tire pressure from a foreign gauge.
- Convert weather and engineering readings.
- Exact factors for every unit.
Common pressure conversions
Quick reference:
| From | To |
|---|---|
| 32 psi (typical car tire) | 2.21 bar / 220.6 kPa |
| 1 bar | 14.504 psi |
| 1 atm | 101.325 kPa / 1.01325 bar |
| 1013.25 hPa | 29.92 inHg |
| 120 mmHg | 16.0 kPa |
Privacy
The calculation happens instantly in your browser. The numbers you enter are not sent to our servers or saved. There's no account to create and nothing to install.
Frequently asked questions
What is a typical car tire pressure in bar?
Many cars use around 30–35 psi, which is roughly 2.1–2.4 bar. The right figure for your car is on a sticker inside the driver's door or fuel flap, and in the owner's manual.
What is standard atmospheric pressure?
One standard atmosphere is 101,325 pascals — 1013.25 hPa, about 14.7 psi or 760 mmHg. Weather maps show sea-level pressure in hPa (millibars), usually between about 980 and 1040.
Last reviewed by the M2Toolkit team.