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Dilutant to add
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Final volume
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Final ABV
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Pure alcohol (ml)
About Alcohol Dilution Calculator
Uses the Pearce equation: V₁ × C₁ = V₂ × C₂ (volume × concentration = constant). Pure alcohol (ethanol) has a density slightly less than water, so mixing causes slight volume contraction – this tool uses the simplified linear model (accurate within ~2% for ABV below 60%). Useful for homebrewing, cocktail batching, and reducing cask-strength spirits to bottling strength.