Alcohol Dilution Calculator
Dilute spirits to a target proof or ABV.
Alcohol Dilution Calculator
Dilute spirits to your target ABV
Formula
Water = (V × ABV₁ / ABV₂) − VHow to Use
- 1Enter current strength — Input the current alcohol percentage (ABV) or proof of your spirit.
- 2Enter volume — Input the volume of spirit you want to dilute.
- 3Set target strength — Enter your desired ABV or proof.
- 4Get water amount — See exactly how much water to add for dilution.
Frequently Asked Questions
How do I dilute 190 proof to 80 proof?
For 1 liter of 190 proof (95% ABV) spirit, add approximately 1.375 liters of water to reach 80 proof (40% ABV). Use our calculator for exact amounts.
What is the difference between proof and ABV?
In the US, proof is double the ABV. 80 proof = 40% ABV. In the UK, historical proof is different — use ABV for clarity.
Does water type matter for dilution?
Use distilled or filtered water for best results. Tap water minerals can affect flavor and clarity, especially in clear spirits.
Why does diluted spirit become cloudy?
Some compounds are soluble in alcohol but not water. Dilution can cause louching (cloudiness). This is normal and harmless.