Beer ABV from Specific Gravity Calculator
Alternative formula (more accurate > 6% ABV): ABV = (76.08 × (OG−FG) ÷ (1.775−OG)) × (FG ÷ 0.794)
- ABV (simple)
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- ABV (alternative)
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- ABW (alcohol by weight)
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- Apparent attenuation
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- Real attenuation
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For homebrew sources: simple = (OG−FG)×131.25, alternative = Daniels/Brewer's Friend formula. ABW ≈ ABV × 0.79336.
About this tool
Beer ABV from Specific Gravity Calculator is a single-purpose utility on instant.tw, a free toolbox of calculators, converters, generators, and quick lookups. Everything works in your browser — nothing is uploaded, nothing is stored on a server unless explicitly noted.
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