Alcohol Dilution Calculator – Accurate & Easy ABV Mixing Tool

Alcohol Dilution Calculator

Dilute a strong spirit to your target ABV.

Inputs

Strong alcohol (% ABV) Water / weak alcohol (% ABV) Target (% ABV) Strong alcohol volume

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References & notes

Uses conservation of alcohol: Vs × A + Vw × B = (Vs + Vw) × C.
Rearranged for added weak liquid: Vw = Vs × (A − C) ÷ (C − B).
Target ABV must be between the weak ABV and the strong ABV.

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