Bar to PSI Converter
Convert bar to PSI instantly — 1 bar = 14.5038 psi. Perfect for tire pressure: 2.2 bar = 31.9 psi. Works both directions with a reference table.
About the Bar to PSI Converter
This free bar to PSI converter uses the factor 1 bar = 14.5037738 psi. Type a pressure in bar and see pounds per square inch instantly — or edit the psi field to convert the other way.
The most common reason to convert is tire pressure: European cars, air compressors and pressure washers quote bar, while tire gauges in Pakistan, the US and many workshops read psi. A door-jamb sticker saying 2.2 bar means 31.9 psi; 2.5 bar for a loaded car is 36.3 psi. The same conversion comes up with espresso machines (9 bar = 130.5 psi), scuba tanks and industrial equipment.
The reference table covers the everyday range from 1 to 10 bar, including the tire-pressure sweet spot around 2.1–2.5 bar (30–36 psi).
How to Use the Bar to PSI Converter
- 1Enter a pressure in bar — the psi value appears instantly.
- 2Or type psi to convert back to bar.
- 3Copy the result, or use the table for common tire pressures.
Frequently Asked Questions
How many psi is 1 bar?
1 bar equals 14.5038 psi (pounds per square inch). For quick estimates, multiply bar by 14.5. So 2 bar is 29 psi, 3 bar is 43.5 psi and 10 bar is 145 psi.
What is 2.2 bar in psi for tires?
2.2 bar is 31.9 psi — right in the normal range for car tires. Other common values: 2.1 bar = 30.5 psi, 2.3 bar = 33.4 psi, 2.4 bar = 34.8 psi and 2.5 bar = 36.3 psi (often the loaded/highway spec).
Is 1 bar the same as atmospheric pressure?
Almost. Standard atmospheric pressure is 1 atm = 1.01325 bar = 14.696 psi, so 1 bar is about 98.7% of an atmosphere. The bar was defined as a convenient round metric unit close to sea-level air pressure.
How do I convert psi back to bar?
Divide psi by 14.5038. For example, 32 psi ÷ 14.5038 = 2.206 bar, and 35 psi = 2.413 bar. Just type into the psi field and this converter does it for you.
What pressure is 9 bar on an espresso machine?
9 bar — the classic espresso extraction pressure — equals 130.5 psi. Pump machines often advertise 15 bar (217.6 psi) maximum, though extraction still happens around 9 bar.