Bar to PSI converter

Quick reference

Bar	PSI
1	14.503774
2	29.007548
5	72.518869
10	145.037738
20	290.075475
25	362.594344
50	725.188689
100	1,450.377377
250	3,625.943443
500	7,251.886887
1,000	14,503.773773

About pressure units

Pressure units come from different traditions: the pascal is the SI unit but inconveniently small (one newton per square meter), so weather reports use kilopascals or bar, tire gauges in the US use PSI (pounds per square inch), medicine uses mmHg for blood pressure, and diving uses atmospheres, roughly the air pressure at sea level (101,325 Pa exactly). A car tire around 32 PSI is about 2.2 bar; standard blood pressure of 120 mmHg is 16 kPa.

More pressure conversions

PSI → Bar PSI → Bar Kilopascals → PSI Atmospheres → PSI mmHg → Kilopascals Bar → Kilopascals All converters

Frequently asked questions

What is the exact formula for Bar to PSI?

Multiply the Bar value by 14.50377377. This comes from the exact unit definitions, not a rounded approximation.

Is this conversion exact?

The underlying ratio is exact where a legal definition exists (for example, 1 inch = 25.4 mm exactly). Displayed results are rounded to six decimal places for readability.

Can I convert PSI back to Bar?

Yes. Use the reverse converter linked below, or just swap which field you type into: the live converter recalculates either direction.