A simple calculator to convert between BAR and PSI. Please see below for more information.

### Input

### Result

### More information

Simply convert between BAR and PSI using this calculator.

There’s a simple relation between BAR and PSI: 1 bar equals 14.5038 psi.

So just multiply or divide by 14.5038 to convert between BAR and PSI.

**Pressure and force**

You don’t need to know this to use this calculator, just some extra information for those interested:

Both BAR and PSI are units of pressure. Pressure is a force per a certain area.

**PSI**

In the case of PSI, this is simple: PSI means ‘Pounds per Square Inch’.

So if we have 100 psi pressure, that pressure pushes with a force of 100 pounds per square inch.

In the case of a pneumatic piston with a piston area of 2 square inch, that piston would push outward with 2 * 100 = 200 pounds of force.

**BAR**

The bar is a metric unit, but not the official SI unit for pressure. The official SI unit is Pascal.

1 bar equals 100.000 Pascal.

And 1 pascal equals 1 N / m2 (1 Newton per square m). Note that this is all in official SI units: Pascal, Newton, Meter.

So 1 bar is 100.000 Newton per square meter.

If we convert this to square mm (easier to work with), we come to:

1 bar = 0.1 N/mm2 (Newton per square millimeter)

So if we have 7 bar pressure, that pressure pushes with a force of 0.7 Newton per square millimeter.

In the case of a pneumatic piston with an area of 1500 square mm, that piston would push outward with 1500 * 0.7 = 1050 newton.

**Extra check/example:**

In our PSI example, we had a pneumatic piston with an area of 2 square inch. We apply 100 PSI. The piston pushes out with a force of 200 pound-force..

2 square inch = 1290 square mm

100 psi = 6.89 bar (use the calculator! ðŸ™‚ )

6.89 * 0.1 * 1290 = 888.81 Newton

If we convert 888.81 Newton to pound-force, we are back at 200 pound-force!

(for those curious: 1 pound = 0.453592 kg. 0.453592 kg = 4.448 Newton (multiply by 9.80665). 200 * 4.448 = 889.6 Newton. Close enough because of rounding errors!)

Our calculations are correct!