This calculator helps you accurately dilute high-proof spirits to your desired alcohol by volume (ABV). Whether you're proofing down a distillate, creating liqueurs, or adjusting the strength of your home-distilled spirits, this tool takes the guesswork out of the process.

How to Use

1. Enter your starting volume – The amount of spirit you currently have (in litres)
2. Enter your current ABV – The alcohol percentage of your spirit as it is now
3. Enter your target ABV – The alcohol percentage you want to achieve
4. Calculate – The calculator will tell you exactly how much water to add

Important tips:

• Use distilled or filtered, soft, low mineral water for dilution to avoid cloudiness
• Add water gradually and mix thoroughly between additions
• Allow the diluted spirit to rest for 24–48 hours before final tasting, as flavours will marry and settle
• Temperature affects ABV readings – measure at room temperature (20°C) for accuracy

For best results when diluting spirits above 60% ABV, consider doing it in stages to prevent heat generation and flavour shock.