Cocktail Dilution Calculator
Shows how strong a cocktail ends up, and how much liquid the ice adds, so you can pick the right glass or batch ahead.
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
The formula
alcohol = Σ volume × ABV final volume = volume × (1 + dilution) strength = alcohol ÷ final volume
The dilution figures are rules of thumb. The real amount depends on the ice, the time and the drink’s own strength and temperature. Mixing also shrinks the volume slightly, which this ignores.
What to watch out for
When making a batched drink to serve without ice, add the water from this calculation to the batch and keep it in the fridge.
Frequently Asked Questions
How strong is a stirred drink of 50 ml at 40%, 25 ml at 20% and 25 ml of juice?
About 20.0% ABV in the glass, from 25.0% before dilution.
Why do shaken drinks taste weaker than stirred ones?
Shaking melts more ice and adds air, so more water ends up in the glass.