Alcohol Dilution Calculator
Calculate water needed to dilute alcohol to a desired percentage
Diluting high-proof alcohol requires precision. Use this tool to find exactly how much water to add to reach your desired ABV.
Calculator Inputs
ml, liters, or oz
%
%
Results
Enter values above to see your results
How It Works
Formula: C1V1 = C2V2. Water to Add = (V1 × C1 / C2) - V1.
Tips & Best Practices
- •Always use distilled or filtered water for best taste.
- •Alcohol and water mix exothermically (it gets warm) and total volume slightly shrinks, but this formula is close enough for most uses.
Frequently Asked Questions
Does temperature matter?
Yes, alcohol measurements vary with temp. Standard is 20°C (68°F).
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