Work out cocktail dilution instantly with clear inputs, formula shown and shareable results.
Pure alcohol is spirit volume times its ABV; the finished strength is that alcohol divided by the total liquid including mixer and the water that melts off the ice. Ignoring meltwater overstates a stirred drink's strength by a fifth or more, which is exactly the dilution bartenders are aiming for.
Finished strength
final ABV % = spirit ml x spirit ABV / (spirit + mixer + meltwater) x 100
UK units
units = pure alcohol ml x 0.789 g/ml / 8 g per unit
final ABV % = spirit ml x spirit ABV / (spirit + mixer + meltwater) x 100. Pure alcohol is spirit volume times its ABV; the finished strength is that alcohol divided by the total liquid including mixer and the water that melts off the ice.
Ignoring meltwater overstates a stirred drink's strength by a fifth or more, which is exactly the dilution bartenders are aiming for.
Enter spirit volume, spirit strength, mixer and other liquid, meltwater from ice. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.