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Cars & travel.

29 June 2021

BAR to PSI converter

Two main pressure measurements are used for car tyres – BAR and PSI. You can use our converter to quickly change from one to another.
Martin Pratt
Bar to psi converter 447567

Keeping your tyre pressure where it's supposed to be can cut down on your fuel bills and make your car safer to drive.


The Which? Car Survey 2021 has opened to the UK public. It's your chance to tell us about the car you drive, you don't need to be a member and you could potentially win £2,500 for taking part.


It's important that your tyre is making the correct amount of contact with the road - over or under-inflated tyres mean less grip on the tarmac.

Check your car manual to find the correct tyre pressure, and use our convertor tool if the measurements don't match the pump.

Thinking of upgrading your car? We only recommend cars that are reliable, economical, comfortable and safe to drive - here are the best new and used cars you can buy today.

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BAR to PSI converter

Not sure which tyres you need? Here's our car tyre buying guide. 

BAR to PSI conversion table

1.30 BAR to 1.80 BAR
BAR
PSI
1.30
17
1.35
18
1.40
19
1.45
20
1.50
21
1.55
22
1.60
23
1.70
24
1.75
25
1.80
26
1.90 BAR to 2.50 BAR
BAR
PSI
1.90
27
1.95
28
2.0
29
2.10
30
2.15
31
2.20
32
2.25
33
2.30
34
2.40
35
2.50
36
2.60 BAR to 3.20 BAR
BAR
PSI
2.60
37
2.65
38
2.70
39
2.75
40
2.80
41
2.90
42
3.0
43
3.05
44
3.10
45
3.20
46
3.25 BAR to 3.90 BAR
BAR
PSI
3.25
47
3.30
48
3.40
49
3.50
50
3.55
51
3.60
52
3.70
53
3.75
54
3.80
55
3.90
56

Looking for a reliable car? We've surveyed more than 43,000 car owners so we can reveal the most reliable car brands - and the least.