Convert bar to psi
To convert bar to psi, multiply the value in bar by about 14.5038 (exactly 100,000 ÷ 6,894.757293168). It is used for European tyre-pressure recommendations, espresso machines, pressure washers and dive gauges. This bar to psi converter works both ways: type bar or psi into either box above and the other box, the worked formula and the chart below update as you type.
The bar is a metric unit of pressure equal to exactly 100,000 pascals (100 kPa) — very close to average air pressure at sea level, which is 1.01325 bar. Bar is used for tyre pressures in Europe and many other regions, espresso machines, pressure washers, dive cylinders and, as millibars, on weather maps. One bar is 14.5038 pounds per square inch.
Pounds per square inch (psi) is the pressure of one pound-force pressing on one square inch — exactly 6,894.757293168 pascals. Going the other way, one pound per square inch equals 0.0689476 bar. It is used for tyre pressures in the US and UK, air compressors, pressure washers, scuba cylinders and hydraulics.
How to convert bar to psi with this tool
- Type a number into the Bar box — it starts at 2.2 bar as an example.
- Read the answer in the Pounds per square inch (psi) box and in the result panel, which also shows the formula with your number.
- To go the other way, type into the psi box, or press the swap button to open the PSI to Bar converter with your value carried over.
- Choose how many decimal places you want, or tap a quick value such as 2 bar, 2.2 bar, 2.5 bar.
- Press Copy result to paste the conversion into a message, spreadsheet or note.
Bar to PSI converter features
Converts both ways
Type in the bar box to get psi, or in the psi box to get bar. The other box follows instantly.
Exact factor
Calculations use 1 psi = 0.06894757293168 bar, and rounding is applied only to the answer you see — choose Auto or 0–10 decimal places.
Formula with your number
The working is shown under the result, for example 2.2 bar × 100,000 ÷ 6,894.757293168 = 31.9083 psi, so you can check it or copy the method.
Quick values and chart
Tap common values like 2 bar, 2.2 bar, 2.5 bar, or read the bar-to-psi table further down this page.
Kilopascals as well
The same pressure in kPa (1 bar = 100 kPa) appears under the result for gauges marked in kilopascals.
Bar to PSI formula
The formula is psi = bar × 100,000 ÷ 6,894.757293168. It is exact because one psi is exactly 6,894.757293168 pascals and one bar is exactly 100,000 pascals.
The reverse formula is bar = psi × 6,894.757293168 ÷ 100,000 — or use the PSI to Bar converter. Three worked examples:
- A tyre at 2.2 bar: 2.2 bar × 100,000 ÷ 6,894.757293168 = 31.9083 psi
- Espresso brewing at 9 bar: 9 bar × 100,000 ÷ 6,894.757293168 = 130.534 psi
- A 200 bar dive cylinder: 200 bar × 100,000 ÷ 6,894.757293168 = 2,900.7548 psi
Bar to PSI quick reference
The values people look up most often, worked out with the exact factor:
- 1 bar = 14.5038 psi
- 1 psi = 0.0689476 bar
- 2 bar = 29.0075 psi
- 2.2 bar = 31.9083 psi
- 2.5 bar = 36.2594 psi
- 9 bar = 130.534 psi
Quick tip: Multiply by 14.5 for a close estimate: 2.4 bar ≈ 34.8 psi, versus the exact 34.8091 psi.
Related conversions: the full pressure converter.
Bar to PSI conversion table
Values in psi are rounded to 4 decimal places (more for very small numbers). For any value not listed, type it into the converter above.
| bar | psi | bar | psi |
|---|---|---|---|
| 0.5 | 7.2519 | 3.5 | 50.7632 |
| 1 | 14.5038 | 4 | 58.0151 |
| 1.5 | 21.7557 | 5 | 72.5189 |
| 1.8 | 26.1068 | 6 | 87.0226 |
| 1.9 | 27.5572 | 8 | 116.0302 |
| 2 | 29.0075 | 9 | 130.534 |
| 2.1 | 30.4579 | 10 | 145.0377 |
| 2.2 | 31.9083 | 15 | 217.5566 |
| 2.3 | 33.3587 | 20 | 290.0755 |
| 2.4 | 34.8091 | 50 | 725.1887 |
| 2.5 | 36.2594 | 100 | 1,450.3774 |
| 2.6 | 37.7098 | 200 | 2,900.7548 |
| 2.8 | 40.6106 | 232 | 3,364.8755 |
| 3 | 43.5113 | 300 | 4,351.1321 |
Bar to PSI FAQ
What is 1 bar in psi?
1 bar is 14.5038 pounds per square inch: 1 bar × 100,000 ÷ 6,894.757293168 = 14.5038 psi.
How do I convert bar to psi?
Multiply the value in bar by about 14.5038 (exactly 100,000 ÷ 6,894.757293168). For example, 2.5 bar × 100,000 ÷ 6,894.757293168 = 36.2594 psi. To convert back, multiply the value in psi by 0.0689476 (exactly 6,894.757293168 ÷ 100,000) — or use the PSI to Bar converter.
What is 1 psi in bar?
One pound per square inch is 0.06895 bar, because 1 psi × 6,894.757293168 ÷ 100,000 = 0.06895 bar.
What does 2.5 bar equal in psi?
Is bar the same as atmospheres?
Close, but not equal. One standard atmosphere is 1.01325 bar (14.696 psi), while 1 bar = 14.5038 psi.