By clicking a retailer link you consent to third-party cookies that track your onward journey. This enables W? to receive an affiliate commission if you make a purchase, which supports our mission to be the UK's consumer champion.

Bar to PSI converter

Two main pressure measurements are typically used for car tyres – bar and PSI. Use our converter to quickly change from one to another
A person in a red long-sleeve top uses a hose to inflate a black tyre with a silver rim.

Keeping your tyre pressure where it's supposed to be can cut your fuel bills and make your car safer to drive. It can also increase the lifespan of your tyres.

It's important that your tyres make the correct amount of contact with the road, as overinflated or underinflated tyres mean less grip on the tarmac.

Check your car manual to find the correct tyre pressure, and use our converter tool if the units don't match those on the pump.


Best cars: Discover those that are safe, reliable and economical (and ones to avoid)


Bar to PSI converter

Drive smarter and cut your costs

free newsletter

Get under the hood with our Cars newsletter, it's free.

Our Cars newsletter delivers cars-related content, along with other information about Which? Group products and services. We won't keep sending you the newsletter if you don't want it – unsubscribe whenever you want. Your data will be processed in accordance with our privacy notice.

Bar to PSI conversion table

1.30 bar to 1.80 bar

BarPSI
1.3018.9
1.3519.6
1.4020.3
1.4521
1.5021.8
1.5522.5
1.6023.2
1.7024.7
1.7525.4
1.8026.1

1.90 bar to 2.50 bar

BarPSI
1.9027.6
1.9528.3
2.029
2.1030.5
2.1531.2
2.2031.9
2.2532.6
2.3033.4
2.4034.8
2.5036.3

2.60 bar to 3.20 bar

BarPSI
2.6037.7
2.6538.4
2.7039.2
2.7539.9
2.8040.6
2.9042.1
3.043.5
3.0544.2
3.1045
3.2046.4

3.25 bar to 3.90 bar

BarPSI
3.2547.1
3.3047.9
3.4049.3
3.5050.8
3.5551.5
3.6052.2
3.7053.7
3.7554.4
3.8055.1
3.9056.6

Looking for a reliable car? We've surveyed more than 60,000 car owners so we can reveal the most (and least) reliable cars


Compare car insurance

Find the right policy for your vehicle using the service provided by Confused.com

Get a quote now