Pressure Converter

Convert pressures for tyres, weather, diving, medicine and engineering between pascals, bar, psi, atmospheres and millimetres or inches of mercury.

Runs in your browser

From

Unit

1 bar = 14.50377377 psi

Factor: 1 bar = 14.503773773 psi

Conversion table: Bar (bar) → Pound per square inch (psi)
bar	psi
1 bar	14.5038 psi
1.5 bar	21.7557 psi
2 bar	29.0075 psi
2.5 bar	36.2594 psi
3 bar	43.5113 psi
4 bar	58.0151 psi
5 bar	72.5189 psi
10 bar	145.038 psi
50 bar	725.189 psi
100 bar	1,450.38 psi

How to use

Enter a pressure.
Choose the units.
Read the result.

How it works

All units convert through the pascal (1 N/m²). A bar is exactly 100,000 Pa, a standard atmosphere exactly 101,325 Pa, and 1 psi ≈ 6,894.76 Pa. Weather maps use hectopascals, which equal millibars.

Examples

Tyres: 2.4 bar = 34.8 psi.
Weather: 1013.25 hPa = 1 atm = 29.92 inHg.

Common uses

Car and bike tyre pressure
Weather and barometers
Diving and gas cylinders

Privacy & security

This tool runs entirely in your browser. Your files and text are never uploaded to our servers — processing happens on your device and results are created locally. How each tool handles files

Frequently asked questions

Are hPa and mbar the same?

Yes, 1 hPa = 1 mbar = 100 Pa.

Is tyre pressure gauge or absolute?

Tyre gauges show pressure above atmospheric (gauge pressure).

Last updated: September 18, 2026