In 1 bars there are 14.503774 pounds per square inch. Meanwhile in 1 pounds per square inch there are 0.068948 bars. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Pounds per square inch to Bars calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert bar to psi (pounds per square inch), multiply the pressure in bar by 14.5038.
Formula:
Example:
For a quick reverse check, you can convert psi to bar by dividing by 14.5038:
Use this conversion when you need to match pressure readings across tools, gauges, and specs that list bar or psi.
1 bar equals 14.5038 PSI (pounds per square inch). This value comes from the standard definitions of bar and PSI.
Multiply the pressure in bar by 14.5038 to get PSI.
Formula: PSI = bar × 14.5038
Use 15 PSI per bar for a quick estimate. It’s close enough for rough checks, but it won’t match exact results.
2 bar = 2 × 14.5038 = 29.0076 PSI.
Rounded: 29.01 PSI
3 bar = 3 × 14.5038 = 43.5114 PSI.
Rounded: 43.51 PSI
5 bar = 5 × 14.5038 = 72.519 PSI.
Rounded: 72.52 PSI
10 bar = 10 × 14.5038 = 145.038 PSI.
Rounded: 145.04 PSI
0.5 bar = 0.5 × 14.5038 = 7.2519 PSI.
Rounded: 7.25 PSI
Yes. Divide PSI by 14.5038 to get bar.
Formula: bar = PSI ÷ 14.5038
They use different unit sizes. Bar is a metric pressure unit, while PSI is based on force over one square inch. They measure the same thing, just in different units.
Not exactly. Standard sea-level pressure is about 1.01325 bar, which is about 14.6959 PSI. So 1 bar is slightly lower than standard atmosphere.
No. The conversion is a fixed math relationship between units. Temperature can change the pressure in a system, but it doesn’t change how bar converts to PSI.
No. bar often means absolute pressure, while barg means gauge pressure (relative to air pressure). Convert the number the same way, but make sure you know if it’s absolute or gauge, since the starting value may differ.
Yes. Pressure units convert the same no matter the fluid. The fluid changes how pressure behaves in a system, but not the unit conversion.
For most day-to-day uses, 2 decimal places is enough. For lab work or calibration, use more digits, like 14.5038.
The Calculate Box tool to convert bars to pounds per square inch uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a bars value in the box and have it instantly converted to pounds per square inch.