Alcohol Dilution Calculator
Calculate exactly how much water to add to dilute alcohol to your desired proof or percentage. Perfect for home distillers, bartenders, and spirit enthusiasts.
Step 1: Alcohol Details
Understanding Alcohol Dilution
When diluting alcohol, the final volume is greater than the sum of the original alcohol and water due to contraction. The calculator accounts for this effect to give precise measurements.
Step 2: Calculation Options
About Alcohol Dilution
Alcohol proof is typically twice the alcohol percentage in most countries (e.g., 40% ABV = 80 proof). When mixing alcohol and water, the final volume is less than the sum due to molecular interaction (contraction).
Alcohol Dilution Results
Water to Add
Alcohol Dilution Comparison
| Target Strength | Water Needed | Final Volume | Proof | Common Use |
|---|
Alcohol Dilution Analysis
Dilution Formula
Water = (Alcohol Volume × Current Strength / Target Strength) – Alcohol Volume
The basic dilution formula calculates the theoretical water needed. The calculator adjusts for alcohol-water contraction, which reduces the final volume by approximately 3-4% depending on the alcohol concentration.
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