Psi to Bar Converter
Convert pound per square inch to bar instantly. Type a value below — the result updates as you type.
When you need to convert pound per square inch to bar
Pressure conversions are used for tyre inflation, weather readings, scuba and industrial gauges, and HVAC work, where gauges and manuals may be calibrated in different units.
Tyre pressures, bike pumps and pressure washers may be labelled in psi or bar depending on the brand.
Typical values: 0.5 psi is about 0.0345 bar, and 100 psi works out to roughly 6.8948 bar. Because the ratio is fixed at 0.0689, you can scale any amount linearly — doubling the psi doubles the bar.
A single tyre or gauge spec is often printed in two or three pressure units side by side for international use.
How to convert pound per square inch to bar
One pound per square inch equals 0.0689 bar. To convert, multiply the number of psi by 0.0689:
bar = psi × 0.0689
For example, 10 psi × 0.0689 = 0.6895 bar.
Psi to bar conversion table
| Pressure (psi) | Bar (bar) |
|---|---|
| 1 psi | 0.0689 bar |
| 2 psi | 0.1379 bar |
| 3 psi | 0.2068 bar |
| 5 psi | 0.3447 bar |
| 10 psi | 0.6895 bar |
| 20 psi | 1.379 bar |
| 50 psi | 3.4474 bar |
| 100 psi | 6.8948 bar |
FAQ
How many bar are in a pound per square inch?
One pound per square inch = 0.0689 bar.
How do I convert bar back to psi?
Divide by 0.0689, or use the bar to psi converter.