Bar to PSI Exact Formula & Table (1 Bar = 14.5038 PSI)

Need to convert bar to psi? Bar to PSI Exact Formula & Table - OmniConverter does it instantly: type once, see every unit, exact BIPM/NIST factors, no sign-up. Try our Pressure Converter free - private, in your browser, on any device.

Quick Answer

Quick Answer

1 bar = 14.5038 PSI.

Formula: PSI = bar×14.5038.

• Example: 2.5 bar (tire) = 36.26 PSI. kPa to bar: bar = kPa÷100.

Why this conversion matters

Every day you see bar to psi - on shopping labels, car dashboards, recipes, or work specs. Getting it wrong costs money or time. In the UK, mixing US and UK gallons means 20% fuel error. Mixing stone and kg means wrong clothing size. Mixing 1024 and 1000 means missing phone storage. Our Pressure converter uses exact BIPM/NIST factors, not rounded estimates, so you get the honest answer. Unlike cloud tools, OmniConverter runs 100% in your browser - your values never leave your device. Private, fast, on any phone.

Where You'll Use This

• Tyre: 2.5 bar = 36.26 PSI, 2.2 bar = 31.91 PSI
• Compressor: 8 bar = 116 PSI, 10 bar = 145 PSI
• Diving: 200 bar tank = 2900 PSI

How to use the converter in 3 steps

1. Step 1: Select your From and To units (e.g., stone to kg).
2. Step 2: Type the amount - every unit updates as you type.
3. Step 3: Copy with the copy icon.

Common mistakes to avoid

• Mixing US vs UK systems - gallon, pint, and stone differ between US and UK. Always check your source system before converting.
• Rounding too early - keep the full factor (like 6.35029, not 6.35) until the final display, then round to 2 decimals for daily use.
• Using 1000 instead of 1024 for digital storage - RAM and files use 1024 (binary), drive makers use 1000 (decimal). Use 1024 for exact.

Always double-check your source system and use the exact factor from BIPM or NIST for critical work.

Internal guides & tools

Explore more: Length Converter , Weight Converter , Volume Converter , Temperature Converter and our Omni Calculator suite for BMI, body fat and calorie.

Sources & standards

BIPM - SI Brochure 9th ed. - bipm.org

NIST SP 811 - Guide for SI - nist.gov

Wikipedia - bar to psi

FAQ - People also ask

What is the exact formula for bar to psi?

See quick answer above - exact factor from BIPM/NIST. For bar to psi, keep full precision until final display, then round to 2 decimals for daily use.

How do I bar to psi without calculator?

Use our free converter at omniconverter.org/pressure?from=bar&to=psi - type value, get instant answer, copy. Works offline after load, no sign-up.

Why does bar to psi matter?

It affects shopping, travel, recipes, health, or work specs daily. Wrong conversion = wrong dose, wrong size, or overpaying. Use exact factors.