What is normal tire pressure in bar?

Car tires typically run at 2.0–2.5 bar (29–36 psi). Motorcycles and bicycles vary widely — check the vehicle's placard or owner's manual.

How do I convert bar to psi without a calculator?

Multiply bar by 14.5. This gives you psi accurate to within 0.03%. For example, 2 bar ≈ 29 psi (exact: 29.0075 psi).

Bar to PSI Converter

1 bar = 14.5038 psi. Standard atmosphere = 1.01325 bar. Car tires are typically 2.0–2.5 bar (29–36 psi).

Inverse conversion

1 psi = 0.0689476 bar. Standard atmosphere = 14.696 psi ≈ 1.013 bar. Car tires run at 30–35 psi.

PSI to Bar →

Formula

psi = bar × 14.5038

Worked example

To convert 3 bar to psi, multiply 3 × 14.5038 = 43.511 psi.

Quick reference table

bar	psi
0.5	7.251887
1	14.503774
1.5	21.755661
2	29.007548
2.5	36.259434
3	43.511321
5	72.518869
10	145.037738

Unit definitions

Bar (bar)

Bar is a metric pressure unit equal to 100,000 Pa. Standard atmosphere is ≈ 1.01325 bar.

PSI (psi)

PSI (pounds per square inch) is common in the US and UK for tire and hydraulic system pressure.

Common use cases

European tire pressure conversion
Industrial gauges
Scuba diving (tank pressure)

PSI to Kilopascals Atmospheres to Bar

Related guides

Common Pressure Units: PSI, Bar, kPa, atm, and MPa Explained

Pressure is force per unit area, and its units reflect the different industries and national standards that have evolved over centuries. This guide explains what each common pressure unit means, where it is used, and how to convert between them accurately.

Frequently asked questions

← All pressure converters Switch to PSI to Bar →