Convert Bar to psi
1 bar equals 14.50377377 psi.
1 bar = 14.50377377 psi
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk bar to psi converter to paste a column from Excel.
How to Convert Bar to psi
- 1 bar = 14.50377377 psi
- 1 psi = 0.06894757293 bar
- Example: convert 15 bar to psi: 15 bar = 15 × 14.50377377 psi = 217.5566066 psi
Formula
psi = bar × 14.50377377302
Derivation from SI units:
- 1 bar = 10⁵ Pa (exact, by definition)
- 1 psi = 1 lbf/in² = (0.45359237 kg × 9.80665 m/s²) ÷ (0.0254 m)² = 6894.757293168 Pa
- 1 bar = 100000 Pa ÷ 6894.757293168 Pa per psi = 14.50377377302 psi
Both units are defined exactly, so the factor is exact. Bar definition: bar; psi definition: psi.
Worked examples
- A compressor cut-out pressure of 8 bar is 116.0301902 psi.
8 bar × 14.50377377 = 116.0301902 psi - A scuba cylinder filled to 200 bar holds gas at 2900.754755 psi.
200 bar × 14.50377377 = 2900.754755 psi
Bar to psi conversion table
| Bar | psi |
|---|---|
| 0.01 bar | 0.1450377377 psi |
| 0.05 bar | 0.7251886887 psi |
| 0.1 bar | 1.450377377 psi |
| 0.25 bar | 3.625943443 psi |
| 0.5 bar | 7.251886887 psi |
| 1 bar | 14.50377377 psi |
| 1.01325 bar | 14.69594878 psi |
| 1.5 bar | 21.75566066 psi |
| 2 bar | 29.00754755 psi |
| 2.5 bar | 36.25943443 psi |
| 3 bar | 43.51132132 psi |
| 4 bar | 58.01509509 psi |
| 5 bar | 72.51886887 psi |
| 6 bar | 87.02264264 psi |
| 7 bar | 101.5264164 psi |
| 8 bar | 116.0301902 psi |
| 10 bar | 145.0377377 psi |
| 12 bar | 174.0452853 psi |
| 16 bar | 232.0603804 psi |
| 20 bar | 290.0754755 psi |
| 25 bar | 362.5943443 psi |
| 40 bar | 580.1509509 psi |
| 100 bar | 1450.377377 psi |
| 200 bar | 2900.754755 psi |
| 300 bar | 4351.132132 psi |
Where it's used
European pneumatic, hydraulic and diving equipment is marked in bar. US users multiply by about 14.5 to get psi.
Bar to other pressure units
| Conversion | 1 bar equals |
|---|---|
| bar to pascal | 100000 Pa |
| bar to kilopascal | 100 kPa |
| bar to megapascal | 0.1 MPa |
| bar to psi | 14.50377377 psi |
| bar to millibar | 1000 mbar |
| bar to decibar | 10 dbar |
| bar to torr | 750.0616827 Torr |
| bar to millimeter of mercury | 750.0615758 mmHg |
| bar to millimeter of water | 10197.16213 mmH₂O |
| bar to centimeter of water | 1019.716213 cmH₂O |
| bar to inch of water | 401.463076 inH₂O |
| bar to inch of water (60 °F) | 401.864652 inH₂O (60 °F) |
| bar to inch of mercury | 29.5299833 inHg |
| bar to atmosphere | 0.9869232667 atm |
| bar to barye | 1000000 Ba |
Frequently asked questions
Is 1 bar equal to 14.5 psi?
Approximately: 1 bar = 14.50377377 psi. Using 14.5 gives an error of about 0.03 %.
How many psi are in 1 bar?
1 bar = 14.50377377 psi.
How do I convert bar to psi?
Multiply the value in bar by 14.50377377. For example, 15 bar × 14.50377377 = 217.5566066 psi.
Is the bar to psi conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "bar".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound-force per square inch (psi)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Bar to psi. Retrieved October 17, 2026, from https://scientificconverters.com/pressure/bar-to-psi/
IEEE
Scientific Converters, "Convert Bar to psi," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/pressure/bar-to-psi/