Pounds per Square Inch to Bars Converter
1 pound per square inch ≈ 0.0689475729 bars
1 pound per square inch equals 0.0689476 bars
How to convert pounds per square inch to bars
Unit conversion preserves the pressure reference. Gauge pressure and absolute pressure are different readings; changing between them also needs the ambient pressure. Mercury and water-column units use the conventions stated in their unit notes.
bar = psi × 0.06894757293One pound per square inch is 0.06894757293 bars, so a single multiplication converts any value.
0.689476 bar ≈ 10 × 0.06894757293Pounds per square inch to bars conversion table
Common values in pounds per square inch, converted to bars.
| Pounds per square inch (psi) | Bars (bar) |
|---|---|
| 1 | 0.068947573 |
| 2 | 0.13789515 |
| 3 | 0.20684272 |
| 4 | 0.27579029 |
| 5 | 0.34473786 |
| 10 | 0.68947573 |
| 20 | 1.3789515 |
| 25 | 1.7236893 |
| 50 | 3.4473786 |
| 100 | 6.8947573 |
| 250 | 17.236893 |
| 500 | 34.473786 |
| 1,000 | 68.947573 |
About these units
pound per square inchpsi
One pound-force per square inch. The US standard for tyre and fluid pressure.
barbar
Exactly 100,000 pascals, close to average atmospheric pressure at sea level.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.