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Beer Calculators

Pick a style, get a proven recipe, scale it to your batch size — or build your own from scratch in Advanced mode.

❓ How to use this calculator

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1. Choose your style

Ten proven styles to start with. Styles marked "takes patience" need a lager fermentation or a fussy yeast strain — great second or third brews.

Saved recipes

0 / 3 free slots used
🔓 Pro: full BJCP database (142 styles), water chemistry & yeast starter calculators. Ingredient substitution via BrewBot is launching soon. Learn about Pro — $9/mo
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Water Chemistry

Dial in Ca, SO₄, and Cl to match your water to the style you're brewing. This is a Pro feature.

Unlock with Pro — $9/mo
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Yeast Starter Calculator

Figure out exactly how big a starter you need based on your target OG, batch size, and yeast cell count. This is a Pro feature.

Unlock with Pro — $9/mo

🫧 Priming & Carbonation

Figure out exactly how much priming sugar to add at bottling for the right fizz — based on your batch size, fermentation temperature, and target carbonation level.

The warmest temp your beer reached after active fermentation — this sets how much CO₂ is already dissolved.