Convert PSI to Bars
Convert PSI to Bars instantly. 1 PSI (psi) equals 0.06895 Bars (bar).
PSI to Bars conversion table
| PSI (psi) | Bars (bar) |
|---|---|
| 1 psi | 0.06895 bar |
| 2 psi | 0.1379 bar |
| 3 psi | 0.2068 bar |
| 5 psi | 0.3447 bar |
| 10 psi | 0.6895 bar |
| 20 psi | 1.379 bar |
| 50 psi | 3.4474 bar |
| 100 psi | 6.8948 bar |
| 500 psi | 34.4738 bar |
| 1,000 psi | 68.9476 bar |
1 PSI = 0.06895 Bars · multiply PSI by 0.06895
About converting PSI to Bars
PSI (psi) and Bars (bar) are both units of pressure, so converting between them is a single multiplication: multiply your PSI figure by 0.06895. Ten PSI comes to 0.6895 Bars, and a hundred works out at 6.8948 Bars.
Rule of thumb: going from PSI to Bars divides, so the figure always shrinks — it takes about 14.5038 PSI to make a single Bar. If your answer came out bigger, you have the conversion the wrong way round.
What is a PSI?
Pounds per square inch is the pressure unit Americans actually meet: on the gauge at the filling-station air pump, on compressors, on hydraulic equipment, and on the sidewall of every tyre sold in the country. It survives in British tyre pressures too, despite nearly everything else there having gone metric. Structurally it is exactly what the name says — a pound-force resting on a square inch — and that heritage is also its weakness, because it inherits the pound-force and with it the old confusion between pounds as weight and pounds as mass.
What is a Bar?
The bar is not an SI unit, but it is accepted for use alongside them, and it earns that place by sheer convenience: it was chosen to sit close to average atmospheric pressure, so "one bar" reads as roughly what the air is doing right now. It dominates European industry — compressed air, hydraulics, scuba cylinders, espresso machines and tyre pressures are all quoted in bar. Its subdivision the millibar had a long career in weather forecasting before being quietly replaced by the hectopascal, which is exactly the same size, so nothing on the old charts had to change.
To put both in perspective: a car tyre is usually inflated to about 32 psi, while a scuba tank is filled to about 200 bar.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Bars to PSI converter, or browse all Pressure converters.
Frequently asked questions
How many Bars are in one PSI?
There are 0.06895 Bars in one PSI.
How do I convert PSI to Bars?
Multiply the number of PSI by 0.06895. For example, 10 PSI = 0.6895 Bars.
What is 100 PSI in Bars?
100 PSI is equal to 6.8948 Bars.
How do I convert Bars to PSI?
Multiply the Bars value by 14.5038 (or divide by 0.06895).
Is this PSI to Bars conversion exact?
The definition is exact — PSI and Bars are both fixed against the same base by international agreement — but the decimal shown here is rounded for readability, because the true ratio does not terminate. For engineering or scientific work, carry more decimal places than this page displays.
What is a PSI?
Pounds per square inch is the pressure unit Americans actually meet: on the gauge at the filling-station air pump, on compressors, on hydraulic equipment, and on the sidewall of every tyre sold in the country. It survives in British tyre pressures too, despite nearly everything else there having gone metric. Structurally it is exactly what the name says — a pound-force resting on a square inch — and that heritage is also its weakness, because it inherits the pound-force and with it the old confusion between pounds as weight and pounds as mass.
What is a Bar?
The bar is not an SI unit, but it is accepted for use alongside them, and it earns that place by sheer convenience: it was chosen to sit close to average atmospheric pressure, so "one bar" reads as roughly what the air is doing right now. It dominates European industry — compressed air, hydraulics, scuba cylinders, espresso machines and tyre pressures are all quoted in bar. Its subdivision the millibar had a long career in weather forecasting before being quietly replaced by the hectopascal, which is exactly the same size, so nothing on the old charts had to change.