Conversions Conversion Chart

Pressure Conversion Chart

Published September 8, 2026

Conversion factors for the pressure units people convert most often. For the reasoning behind these numbers, see Understanding Pressure Units.

Pressure Unit Conversions

Unit Pascal (Pa) psi Bar Atm
1 bar 100,000 14.5038 1 0.9869
1 atmosphere (atm) 101,325 14.6959 1.01325 1
1 psi 6,894.76 1 0.0689 0.068
1 atm also equals 760 mmHg (torr)

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Frequently Asked Questions

What’s the difference between psi and bar?

Both measure pressure. 1 bar is about 14.5 psi. Bar is common in metric contexts and is close to standard atmospheric pressure; psi is common in the US, including for tire pressure.

What is standard atmospheric pressure?

101.325 kPa (1 atm) at sea level, equal to about 14.7 psi.

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