How do I use this chart?

Enter your current keg pressure (PSI) and beer temperature to see how many CO2 volumes you have. Or adjust the values to find the right PSI for your target carbonation.

How long to reach equilibrium?

At the set pressure, beer reaches equilibrium carbonation in 7-14 days. Colder beer equilibrates slightly faster. Shaking the keg speeds this up considerably.

Is this the same as a serving pressure?

Only if your carbonation is already at equilibrium. If you are actively carbonating, you may be running higher pressure temporarily. Once carbonated, reduce to serving pressure.

How do I read a carbonation chart?

Find your beer temperature on one axis and your target CO2 volumes on the other. The intersection gives you the required PSI. Most charts assume equilibrium — meaning the beer has been at that pressure and temperature long enough for the CO2 to fully dissolve (typically 5-14 days).

What if my temperature fluctuates?

CO2 absorption changes with temperature. If your kegerator temperature varies, set your pressure for the warmest temperature to avoid under-carbonation. Small fluctuations (1-2°C) have minimal effect. Large swings can cause foaming problems.

BrewCalcs

Carbonation Chart Calculator

Interactive PSI chart for temperature and CO2 volume combinations.

Beer Temperature

Keg Pressure

How We Calculate This

PSI to CO2 Volumes

This calculator reverses the standard carbonation equation to determine CO2 volumes from known pressure and temperature. At equilibrium, the dissolved CO2 is directly related to the applied pressure and liquid temperature.

Frequently Asked Questions

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Last updated: 2025-02-20

All calculations are estimates. Always verify values and adjust based on your equipment and ingredients.