Unit converter

Pressure converter

Convert between psi, bar, kPa, inches of water column, and head — the pressure units that show up on pumps, gauges, duct static, and test reports.

Quick answer

1 psi = 6.89476 kPa. 1 psi = 0.0689476 bar. 1 psi = 27.6799 in wg.

Common pressure conversions

Unit	kPa	psi
1 psi	6.89476	1
1 bar	100	14.5038
1 kPa	1	0.145038
1 MPa	1000	145.038
1 in Hg	3.38639	0.491154
1 in wg	0.249089	0.0361273
1 ft of head	2.98907	0.433528
1 atm	101.325	14.6959
1 mm Hg	0.133322	0.0193368
1 Pa	0.001	0.000145038

About this converter

Convert between psi, bar, kPa, inches of water column, and head — the pressure units that show up on pumps, gauges, duct static, and test reports. It runs in your browser and works offline, so you can convert on the truck or in the field with no signal.

Common on Plumbing, HVAC and Datacenter work.

Airflow Power & cooling Energy Liquid flow Length Area Volume Weight Torque Air & fluid velocity Temperature

Calculators that use pressure

Affinity laws calculatorScale fan or pump flow, pressure, and power for a speed change using the affinity laws: flow with speed, pressure with the square, power with the cube.NPSH available calculatorFind the net positive suction head available to a pump: NPSHa = atmospheric + static - vapor pressure - friction head.PUE calculatorFind a data center's Power Usage Effectiveness: total facility power divided by the IT load, plus DCiE and the overhead in kW.Pump BHP calculatorFind pump brake horsepower from flow and head: BHP = (gpm x head x specific gravity) / (3960 x efficiency).

Pressure conversion FAQ

How do you convert psi to kPa?

Multiply by 6.89476: 1 psi = 6.89476 kPa. To convert back, 1 kPa = 0.145038 psi.

How do you convert psi to bar?

Multiply by 0.0689476: 1 psi = 0.0689476 bar. To convert back, 1 bar = 14.5038 psi.

How do you convert psi to in wg?

Multiply by 27.6799: 1 psi = 27.6799 in wg. To convert back, 1 in wg = 0.0361273 psi.