PSI vs Bar
Compare psi and bar side by side, convert in both directions, and see the exact factor - Pressure units.
= 0.068948 bar
= 14.5038 psi
1 pound per square inch = 0.068948 bar · 1 bar = 14.5038 psi
The PSI is the smaller unit - the same amount has a smaller number when measured in it.
| PSI (psi) | Bar (bar) | Bar (bar) | PSI (psi) |
|---|---|---|---|
| 1 | 0.068948 | 1 | 14.5038 |
| 2 | 0.137895 | 2 | 29.0075 |
| 5 | 0.344738 | 5 | 72.5189 |
| 10 | 0.689476 | 10 | 145 |
| 25 | 1.7237 | 25 | 362.6 |
| 50 | 3.4474 | 50 | 725.2 |
| 100 | 6.8948 | 100 | 1,450 |
| 250 | 17.2369 | 250 | 3,626 |
| 500 | 34.4738 | 500 | 7,252 |
| 1000 | 68.9476 | 1000 | 14,504 |
Quick Answer
1 pound per square inch (psi) = 0.068948 bar (bar), and 1 bar = 14.5038 psi. Bar is the larger unit, so the same physical amount needs a bigger number when measured in psi. Convert either way with the live tool below or the dedicated converter pages.
Key Facts
- 1 pound per square inch (psi) = 0.068948 bar
- 1 bar (bar) = 14.5038 psi
- Conversion is exact multiplication - no rounding in the factor
- Table below covers common values in both directions
- Dedicated converters: psi→bar and bar→psi pages with live tools
Frequently Asked Questions
Which is bigger, a pound per square inch or a bar?
One pound per square inch equals 0.068948 bar, and one bar equals 14.5038 psi. The unit with the larger factor is the physically bigger one.
How do I convert psi to bar?
Multiply by the factor: value in bar = value in psi × 0.068948. Example: 5 psi = 0.344738 bar. Reverse: divide by 0.068948 (or multiply by 14.5038).
Why are psi and bar different?
They come from different measurement systems - PSI belongs to the metric (SI) world, Bar to the US customary world (or another convention). The conversion is exact: 0.068948 bar per pound per square inch, no rounding needed for the factor itself.
Is there a quick way to convert without a calculator?
Memorize the 1-to factor: 1 pound per square inch ≈ 0.068948 bar. Then multiply. For 2 psi that's ≈ 0.137895 bar.
Frequently Asked Questions
One pound per square inch equals 0.068948 bar, and one bar equals 14.5038 psi. The unit with the larger factor is the physically bigger one.
Multiply by the factor: value in bar = value in psi × 0.068948. Example: 5 psi = 0.344738 bar. Reverse: divide by 0.068948 (or multiply by 14.5038).
They come from different measurement systems - PSI belongs to the metric (SI) world, Bar to the US customary world (or another convention). The conversion is exact: 0.068948 bar per pound per square inch, no rounding needed for the factor itself.
Memorize the 1-to factor: 1 pound per square inch ≈ 0.068948 bar. Then multiply. For 2 psi that's ≈ 0.137895 bar.