Pressure Unit Conversion

Convert pressure between psi, bar, kilopascals and atmospheres instantly — the same conversions as the Brewfather app.

Pressure in Pounds per Square Inch

Enter a value in any unit — the others update live. Switching the unit converts what you typed. kPa shows one decimal, the others two.

Handy for keg and spunding pressures: 12 psi is about 0.83 bar or 82.7 kPa.

Converted to Bars

0.83 bar

Want this running live inside your recipes?

Brewfather recalculates your whole recipe as you type — gravity, IBU, color, water and more. Free to start.

How this calculator works

Forced carbonation, spunding and pressure fermentation all involve pressures quoted in psi, bar, kPa or atmospheres.

Type a pressure in any unit and the others update live, using the same conversions as the Brewfather app.

Useful for matching a regulator set in one unit to a carbonation chart written in another.

Around 12 psi is roughly 0.83 bar — a typical serving pressure for many ales.
Use the Brewfather carbonation tool to turn a target CO2 volume into the exact regulator pressure for your beer temperature.