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Mizuwari Ratio Calculator (Whisky and Water)

From the spirit's ABV, the spirit-to-water ratio, and your target volume, calculate how much spirit and water to pour and the resulting strength. Reproduce classic ratios like 1:1 or 1:2 in one tap.

Input

Enter the spirit's ABV, the spirit-to-water ratio (water includes ice and mixers), and the total volume you want to make. We'll work out how much spirit and water to pour, plus the resulting ABV.

%
Ratio (spirit:water)
ml

A standard mizuwari. A classic strength that balances aroma and drinkability.

Result

Whisky and water at 1:2 (amounts to pour)

Spirit 100ml + Water 200ml

Resulting ABV:about 13.3 %

Resulting ABV

13.3 %

Spirit volume

100 ml

Water / ice volume

200 ml

Pure alcohol per glass

32.0 g

Common ratio guide

Ratio (spirit:water)Character
1:1Strong, close to on-the-rocks. For those who want to savor the spirit’s full flavor.
1:2 (selected)A standard mizuwari. A classic strength that balances aroma and drinkability.
1:2.5Slightly diluted. Ideal for sipping slowly alongside a meal.
1:3Light and crisp. For those who want a milder drink to enjoy at a leisurely pace.

How it works

  • The total volume is split between spirit and water (including ice and mixers) according to the chosen ratio. For example, making 300 ml at 1:2 gives 100 ml of spirit and 200 ml of water.
  • The resulting ABV is calculated as 'spirit ABV x spirit volume / total volume'. For a given ratio, the resulting ABV stays the same no matter the total volume.
  • Pure alcohol per glass is calculated as 'total volume (ml) x resulting ABV (%) / 100 x 0.8 (specific gravity of alcohol)'.
  • As a rough guide: 1:1 is strong, 1:2 is the easy-drinking standard, and 1:2.5 to 1:3 are light and crisp. Choose based on your taste and the occasion.
  • As ice melts, the actual drink becomes weaker than shown. Because taste varies with the amount of mixer and how much the ice melts, treat these figures as estimates only.
  • Please drink responsibly. Underage drinking and drunk driving are prohibited by law. The results are estimates and do not diagnose or guarantee your health or level of intoxication.