Bar to Pounds per Square Inch

1 bar = 14.50377 psi

Owners of European cars, imported espresso machines, and diving equipment often see pressures listed in bar but use American gauges and pumps that read in psi. Converting bar to psi makes it possible to inflate tires, set regulators, and check readings without guessing.

From

When you need to convert bar to pounds per square inch

Inflating tires on a European car whose door placard lists bar
Understanding espresso machine pump ratings given in bar
Reading scuba tank fill pressures on a psi gauge
Checking hydraulic or pneumatic tool specs from metric manuals

How to convert bar to pounds per square inch

psi = bar × 14.50377

Example: 5 bar = 72.51887 psi

Common pressures in bar

Bar (bar)	Pounds per Square Inch (psi)
1 bar	14.50377 psi
2 bar	29.00755 psi
2.2 bar	31.9083 psi
2.5 bar	36.25943 psi
3 bar	43.51132 psi
5 bar	72.51887 psi
9 bar	130.534 psi
10 bar	145.0377 psi
200 bar	2,900.755 psi

Tips for converting bar to pounds per square inch

Multiply bar by roughly 14.5 to get psi. For a fast estimate, multiply by 15 and subtract a little.
Car tire pressures in bar usually fall between about 2 and 3, so a result far outside the 30s in psi suggests a misread decimal.
Do not confuse bar with barg and bara: barg is gauge pressure, bara is absolute pressure including the atmosphere.

Bar to Pounds per Square Inch conversion table

Bar (bar)	Pounds per Square Inch (psi)
1 bar	14.50377 psi
2 bar	29.00755 psi
3 bar	43.51132 psi
4 bar	58.0151 psi
5 bar	72.51887 psi
6 bar	87.02264 psi
7 bar	101.5264 psi
8 bar	116.0302 psi
9 bar	130.534 psi
10 bar	145.0377 psi
15 bar	217.5566 psi
20 bar	290.0755 psi
25 bar	362.5943 psi
30 bar	435.1132 psi
40 bar	580.151 psi
50 bar	725.1887 psi
75 bar	1,087.783 psi
100 bar	1,450.377 psi
250 bar	3,625.943 psi
500 bar	7,251.887 psi
1,000 bar	14,503.77 psi

About the units

Bar: The bar is a metric unit of pressure equal to exactly 100,000 pascals, close to atmospheric pressure at sea level.

Pounds per Square Inch: Pounds per square inch (psi) is a US customary unit of pressure, used for tire pressure, hydraulics and compressed air.

Frequently asked questions

How many pounds per square inch are in 1 bar?

1 bar equals 14.50377 pounds per square inch.

How many bar are in 1 pound per square inch?

1 pound per square inch equals 0.06894757 bar.

How do I convert bar to pounds per square inch?

Use the formula psi = bar × 14.50377.

What is 10 bar in pounds per square inch?

10 bar equals 145.0377 pounds per square inch.

Related conversions

Sources

Conversion factors use the exact definitions published by NIST and the BIPM, and are checked by automated tests against those definitions.

Last updated: October 17, 2026