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Redmoon Converters
🍺 Home Brewing

Priming Sugar Calculator (Bottle Carbonation)

Calculate exact grams of priming sugar for your target CO₂ volume by style (ale, lager, hefe, saison), batch size and final fermentation temperature.

Priming sugar needed
0 g
0 oz · Residual CO₂ vols · Needs vols
Sugar typeGramsOunces
How the math works

Residual CO₂: 3.0378 − (0.050062 × T_F) + (0.00026555 × T_F²) — beer at room temperature already holds some CO₂ from fermentation.

Needed CO₂: target_vol − residual.

Grams of corn sugar per liter: needed_co2 × 4.0. Other sugars scale by yield factor: corn 1.00, sucrose 0.91, DME 1.47, honey 0.93, maple 1.14.

Kegging needs about half the sugar of bottling because the keg headspace is purged with CO₂ at serving pressure.

Also known as

priming sugar calculatorcarbonation calculatorbottling sugar calculator

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