Cocktail Dilution Calculator
See how stirring or shaking with ice dilutes a cocktail's ABV.
Quick answer: enter your details below and click Calculate Dilution — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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How to use
- Enter the starting volume and ABV.
- Enter the dilution water in millilitres.
- Click Calculate Dilution for the final strength.
About this tool
Stirring a cocktail over ice melts water into the drink, which lowers its strength and softens harsh edges. This calculator shows the final ABV and volume after a chosen amount of dilution water is added. Use it to plan stirred drinks rather than guessing how long to stir.
Frequently asked questions
How much dilution does stirring usually add?
Roughly 20 to 30 percent of the starting volume for a well-stirred drink, depending on ice and time.
Does shaking dilute more than stirring?
Usually, yes. Shaking breaks ice faster and adds water more quickly, which also chills the drink harder.