Alcohol Dilution Calculator

Dilute a strong spirit to your target ABV.

🥃 Strong alcohol (% ABV) 💧 Water / weak alcohol (% ABV) 🎯 Target (% ABV)

⚗️ Strong alcohol volume

💧 Water / weak alcohol to add

📦 Final volume (approx.)

Show contraction estimate

Enter the values above to see a summary…

References & notes

Conservation of absolute alcohol (“Pearson’s square” method) for water/weak-spirit dilution.
Volume contraction on mixing water–ethanol is real; estimates shown are approximate at ~20 °C.

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