Alcohol Dilution Calculator for Precise ABV Adjustment
Easily dilute spirits and liquors to your desired strength with our advanced tool
This Alcohol Dilution Calculator enables distillers, mixologists, and spirits enthusiasts to precisely calculate the amount of water required to adjust high-proof spirits to a target ABV (Alcohol By Volume). Ideal for liquor proofing, cocktail preparation, or custom spirit blending.
Water to Add
Amount: 0 L
Final Volume
Volume: 0 L
Pure Alcohol
Amount: 0 L
Dilution Ratio
Ratio: 0
Need to Calculate Beer ABV?
If you’re brewing beer rather than diluting spirits, try our Beer ABV Calculator to determine the exact alcohol content of your homebrew using original and final gravity readings.
About the Alcohol Dilution Calculator
This advanced alcohol dilution calculator assists distillers, mixologists, and home bartenders in precisely adjusting the ABV of high-proof spirits. Whether proofing down moonshine, crafting a custom spirit blend, or preparing liquors for barrel aging, this tool ensures accurate spirit dilution for optimal results.
How to Use the ABV Adjustment Calculator
- Enter your starting volume and select the appropriate unit (liters, milliliters, gallons, or ounces).
- Input your starting ABV percentage (the current alcohol strength of the spirit).
- Specify your target ABV percentage (the desired final alcohol strength).
- Enter the water temperature to account for thermal effects during dilution.
- Click “Calculate Dilution” to view precise results for your spirit dilution.
Understanding Your Dilution Results
- Water to Add: The exact amount of water required to achieve the target ABV.
- Final Volume: The total volume of the spirit after dilution.
- Pure Alcohol: The volume of pure ethanol in the final solution.
- Dilution Ratio: The ratio of water added to the initial spirit volume.
The Science Behind Spirit Dilution
Spirit dilution involves maintaining the same amount of pure alcohol while increasing the total volume with water to achieve a desired ABV. The core formula for liquor proofing is:
Water to Add = (Pure Alcohol ÷ Target ABV%) – Initial Volume
Where Pure Alcohol = Initial Volume × Initial ABV%
Importance of Water Temperature in Dilution
Water temperature impacts the final volume due to thermal contraction. Mixing cold water with high-proof alcohol can cause an exothermic reaction, slightly altering the ABV. Professional distillers often use room-temperature water (around 20°C/68°F) for consistent results. Explore more in the Distillery Trail’s guide on temperature effects.
Common Spirit Dilution Targets
Standard ABV percentages for various spirits after dilution:
Whiskey/Bourbon
40-50% ABV
(80-100 proof)
Vodka
37.5-50% ABV
(75-100 proof)
Rum
37.5-60% ABV
(75-120 proof)
Gin
37.5-47% ABV
(75-94 proof)
Liqueurs
15-30% ABV
(30-60 proof)
Frequently Asked Questions About Spirit Dilution
Can I dilute spirits in batches using this calculator?
Yes, our alcohol dilution calculator is versatile and works for any volume. For large batches, ensure you use a food-grade container and mix thoroughly after adding water to achieve consistent ABV.
Should I use distilled water for liquor proofing?
For optimal results, use filtered or distilled water to avoid introducing minerals or impurities that could affect the flavor or clarity of your diluted spirits.
Does dilution impact the flavor profile of spirits?
Dilution can enhance or alter flavor profiles, often opening up new tasting notes in spirits. For detailed insights, read Whisky Science’s study on dilution and flavor perception.
How accurate is this alcohol dilution calculator for ABV adjustment?
Our calculator delivers highly accurate results by using precise mathematical formulas and temperature corrections to account for thermal contraction. For best results, use calibrated tools like graduated cylinders and an alcoholmeter to measure volumes and ABV.
How do I use this calculator for cocktail ABV adjustments?
Input the spirit’s current ABV, desired ABV (e.g., 30% for cocktails), and volume into the calculator. It will provide the exact water needed to reach the target strength, ensuring consistent flavor balance in your mixology creations.
What safety precautions should I take when diluting high-proof spirits?
Dilute high-proof spirits in a well-ventilated area to avoid inhaling vapors. Use food-grade containers, add water gradually to manage exothermic reactions, and wear protective gloves when handling large volumes to prevent skin irritation.