Bar to PSI Converter
Convert bar to PSI instantly. Enter pressure in bar to get pounds per square inch, with the exact conversion factor and the reverse PSI to bar direction shown.
Updated 2026-06-14 · Free · No sign-up · Runs privately in your browser
Show the formula & steps
How the Bar to PSI Converter Works
This tool converts bar to pounds per square inch (PSI) and back. Both measure pressure. Bar is the standard metric unit across Europe, while PSI is the common imperial unit in the US and UK for tyres, compressors and hydraulics.
The Formula
PSI = bar × 14.5038 Bar = PSI × 0.0689476
This follows from the definitions: 1 bar = 100,000 pascals and 1 PSI = 6,894.76 pascals, so one bar contains 14.5038 PSI.
Worked Example
Convert a tyre pressure of 2.2 bar to PSI:
- PSI = 2.2 × 14.5038 = 31.9 PSI
Going the other way, 35 PSI in bar:
- bar = 35 × 0.0689476 = 2.41 bar
Bar to PSI Quick Reference
| Bar | PSI |
|---|---|
| 1.0 | 14.5 |
| 1.5 | 21.8 |
| 2.0 | 29.0 |
| 2.2 | 31.9 |
| 2.5 | 36.3 |
Where You Use This Conversion
The most common reason to convert bar to PSI is tyre pressure when a European manual lists bar but your gauge reads PSI. The same conversion applies to bicycle tyres, air compressors, diving equipment and hydraulic systems rated in bar.
Frequently asked questions
How many PSI is 1 bar?+
One bar equals about 14.5038 PSI. So a pressure of 2 bar is roughly 29 PSI. To convert any bar value to PSI, multiply by 14.5038.
How do I convert bar to PSI?+
Multiply the bar value by 14.5038. For example, 2.2 bar × 14.5038 = 31.9 PSI. To reverse it, divide PSI by 14.5038 or multiply PSI by 0.0689476.
What is 2 bar in PSI?+
2 bar is about 29 PSI. This is close to a typical car tyre pressure, which is why tyre charts frequently show both bar and PSI values.
Is 1 bar roughly atmospheric pressure?+
Yes. One bar equals 100,000 pascals, very close to standard sea-level atmospheric pressure of 1.01325 bar. They are not exactly equal but are often treated as the same in casual use.
Why convert bar to PSI?+
European manuals and gauges usually use bar, but US and UK tyre gauges and equipment show PSI. Converting lets you match the recommended pressure to whichever gauge you have on hand.