CalculateCarbonation target
Priming Sugar Calculator
Free priming sugar calculator. Enter beer volume, temperature, and target CO2 volumes to get the corn sugar (or table sugar) needed to carbonate.
Calculate the corn sugar needed to carbonate your beer to a target CO2 level.
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How the Priming Sugar Calculator works
Priming sugar is the small amount of fermentable sugar added at bottling so residual yeast produces the CO₂ that carbonates your beer. This calculator accounts for the CO₂ already dissolved in the beer, which depends on the highest temperature it reached.
Enter your batch volume, that peak temperature, and a target carbonation level in volumes of CO₂ to get the corn sugar (dextrose) required, plus a table-sugar equivalent.
Frequently asked questions
- Why does temperature matter for priming?
- Beer retains more dissolved CO₂ at lower temperatures. The calculator subtracts that residual CO₂ from your target so you do not over-prime.
- Can I use table sugar instead of corn sugar?
- Yes. Sucrose is slightly more efficient, so use about 91% of the corn-sugar mass shown.
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