1 psi = 0.068948 bar
| PSI (psi) | Bar (bar) |
|---|---|
| 1 | 0.0689 |
| 2 | 0.1379 |
| 5 | 0.3447 |
| 10 | 0.6895 |
| 14.504 | 1 |
| 15 | 1.0342 |
| 20 | 1.379 |
| 25 | 1.7237 |
| 30 | 2.0684 |
| 32 | 2.2064 |
| 35 | 2.4132 |
| 40 | 2.7579 |
| 45 | 3.1026 |
| 50 | 3.4474 |
| 60 | 4.1369 |
| 75 | 5.1711 |
| 80 | 5.5158 |
| 100 | 6.8948 |
| 150 | 10.3421 |
| 200 | 13.7895 |
To convert PSI to bar, multiply by 0.0689476. Alternatively, divide by 14.5038.
1 psi = 0.068948 bar
Convert 35 psi (typical tire pressure) to bar: 35 × 0.0689476 = 2.41 bar
Convert 100 psi to bar: 100 × 0.0689476 = 6.89 bar
To convert bar to PSI, multiply by 14.5038.
\u2022 1 bar (14.5 psi) is approximately atmospheric pressure at sea level.
\u2022 2.2 bar (32 psi) is typical car tire pressure.
\u2022 3.4 bar (50 psi) is mountain bike tire pressure.
\u2022 200 bar (2,900 psi) is a full scuba tank.
PSI (pounds per square inch) and bar are the two most common pressure units in everyday and industrial use. PSI is standard in the US, while bar is common in Europe and much of the world. The conversion is essential for automotive, industrial, and diving applications.
Tire pressure is the most common reason people convert between PSI and bar. US tire gauges read in PSI, while European gauges and many car door stickers show bar. Typical car tire pressure: 30-35 PSI = 2.07-2.41 bar. Bicycle road tires: 80-130 PSI = 5.5-9.0 bar. Mountain bike tires: 30-50 PSI = 2.1-3.4 bar.
Dive tanks are rated in bar in most of the world and PSI in the US. A full aluminum 80 tank is about 200 bar (2,900 PSI). Dive computers and gauges may display in either unit. Understanding the conversion is important for safety and planning.
Hydraulic systems, pneumatic tools, and pressure vessels use both units depending on the country. A compressor rated at 150 PSI provides about 10.3 bar. Industrial specifications, safety ratings, and equipment manuals may use either or both units.
Multiply the PSI value by 0.0689476. For example, 35 PSI × 0.0689476 = 2.41 bar.
32 PSI is approximately 2.21 bar — a common car tire pressure.
PSI is standard in the US and UK. Bar is standard in continental Europe and much of the world. Both are widely used internationally.
Standard atmospheric pressure is 14.696 PSI or 1.01325 bar.