Calculate the exact amount of sugar needed for bottle carbonation.
Brew Specs
Sugar Dosage
Enter batch details to see sugar amount
Overview
Priming sugar is added to beer just before bottling to restart fermentation in the sealed bottle, creating natural carbonation. This calculator ensures you get the right 'fizz' without blowing up your bottles!
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Pro Tips
Measure your sugar by weight (grams) rather than volume (cups) for precision.
The temperature of the beer matters because colder beer retains more residual CO2 from primary fermentation.
Dissolve your priming sugar in boiling water and let it cool slightly before mixing with your beer.
Typical target for a standard IPA or Pale Ale is 2.3–2.5 volumes of CO2.
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Fun Facts
"CO2 volumes vary by beer style; British ales are low (1.5–2.0), while German hefeweizens are high (3.0+)."
"Yeast produces equal parts CO2 and alcohol by weight during fermentation."
"The 'bottle bomb' is a real danger if too much priming sugar is used or fermentation isn't finished."
"Corn sugar (dextrose) is preferred because it's 100% fermentable and has a neutral flavor."
