PSI to Bar Converter
Enter a value to instantly convert between pressure units.
1 Pound per Sq. Inch = 0.0689 Bar
Key Formulas
Pound per Sq. Inch → Bar
bar = psi × 0.0689476Bar → Pound per Sq. Inch
psi = bar × 14.5038Atmosphere → Pound per Sq. Inch
psi = atm × 14.6959Pound per Sq. Inch → Atmosphere
atm = psi × 0.068046Formula
bar = psi × 0.0689476PSI (pound-force per square inch) is an inch-pound pressure unit. One bar is defined as 100,000 Pa. The bar is approximately 1 atmosphere of pressure. Converting between them is essential for international equipment manuals and tire maintenance.
Source: NIST SP 811, Table B.8
Reviewed by the Convert Calc editorial team · Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
Car tire pressure example. The door jamb placard lists the value for your vehicle.
32 psi = 2.206 bar
Bicycle tire pressure example. Use the range printed on your tire.
50 psi = 3.45 bar
Compressor output example. 100 psi is about 6.89 bar.
100 psi = 6.89 bar
Atmospheric pressure at sea level. 14.7 psi ≈ 1.013 bar; a gauge open to the air reads 0.
14.7 psi = 1.013 bar