📏 PSI to Bar Converter
Convert psi (psi) to bar (bar) instantly, with the formula, a worked example and a conversion table.
Quick answer: 1 pound per square inch (psi) = 0.068947573 bar (bar). Formula: bar = psi × 0.068947573.
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PSI to Bar Converter inputs
Result
PSI to Bar conversion table
| PSI (psi) | Bar (bar) |
|---|---|
| 0.1 psi | 0.0068947573 bar |
| 0.5 psi | 0.034473786 bar |
| 1 psi | 0.068947573 bar |
| 2 psi | 0.13789515 bar |
| 3 psi | 0.20684272 bar |
| 5 psi | 0.34473786 bar |
| 10 psi | 0.68947573 bar |
| 20 psi | 1.3789515 bar |
| 25 psi | 1.7236893 bar |
| 50 psi | 3.4473786 bar |
| 100 psi | 6.8947573 bar |
| 1,000 psi | 68.947573 bar |
Other pressure conversions
How to convert psi to bar
Multiply the number of psi by 0.068947573 to get bar: bar = psi × 0.068947573.
Example: 5 psi = 0.34473786 bar.
The pound per square inch (psi) and the bar (bar) are both units of pressure. Need the opposite direction? Use the bar to psi converter.
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Metric and imperial units
The metric system (SI) is used by almost every country and by science worldwide. Its units scale by powers of ten – 1 kilometer is 1,000 meters, 1 meter is 100 centimeters – which makes conversions inside the system easy. The imperial and US customary systems (inches, feet, pounds, gallons) are still used daily in the United States and partly in the UK.
Since 1959 the inch has been defined as exactly 2.54 centimeters and the pound as exactly 0.45359237 kilograms, so conversions between the two systems are exact. Note that a US gallon (3.785 L) and an imperial gallon (4.546 L) are different – choose the right one above.
This converter covers 10 categories and 66 units: length, weight, temperature, volume, area, speed, time, data, energy, pressure.
Frequently asked questions
How many bar are in a pound per square inch?
1 pound per square inch = 0.068947573 bar.
How do I convert psi to bar?
Use the formula bar = psi × 0.068947573. For example, 5 psi = 0.34473786 bar.
How do I convert bar back to psi?
1 bar = 14.503774 psi. Use the bar to psi converter linked on this page.
Are these conversions exact?
Yes – all factors use the internationally defined values (for example 1 inch = 2.54 cm exactly, 1 pound = 0.45359237 kg exactly). Results are rounded to 8 significant digits for display.