Cocktail ABV Calculator

Alcohol by volume is simply the share of a drink that is pure ethanol. To work out the alcohol percentage of a cocktail by hand you take three steps:

1. Multiply each ingredient's volume by its ABV. Two ounces of 40% tequila contributes 2 × 0.40 = 0.8 oz of pure alcohol.
2. Add every contribution together to get the total pure alcohol in the drink. Juices, syrups, soda and cream contribute zero.
3. Divide by the finished volume — the liquid you measured plus the meltwater the drink picks up from ice — and multiply by 100.

A classic Margarita is a good worked example: 2 oz tequila at 40%, 0.75 oz orange liqueur at 30% and 1 oz of citrus and agave gives 1.02 oz of pure alcohol in 3.75 oz of liquid, or about 27% in the shaker. Shake it and roughly 25% of the volume comes back as water, so the finished drink lands near 22% — and counts as about 1.7 US standard drinks.

Why dilution matters more than people expect

Ice is an ingredient. A hard-shaken sour typically gains 20–25% of its volume in meltwater, a stirred spirit-forward drink around 15–20%, and a drink built straight into a glass with no ice contact gains nothing at all. That difference alone can move a cocktail from 28% to 22% ABV. Drinks served over fresh ice keep diluting in the glass, so the first sip is always stronger than the last — this calculator models the strength at the moment of service.

Use the Undiluted setting for bottled, canned, kegged or pre-batched drinks where you control the water exactly, and the custom percentage when you have weighed a batch before and after chilling and know your real number.

Typical alcohol content in cocktails

Standard drinks and responsible service

In the United States one standard drink contains 0.6 fl oz (about 14 grams) of pure alcohol — roughly a 1.5 oz shot of 40% spirit, 5 oz of table wine or 12 oz of 5% beer. Because most cocktails are built on 2 oz or more of spirit, a single cocktail commonly counts as one and a half to two and a half standard drinks. Printing that number next to the drink, or training it into your staff, is one of the simplest responsible-service tools a bar has.

Every figure here is an estimate produced from the volumes and ABVs you entered. Free-pour variance, ice temperature, dilution during a long stir and product batch differences all shift the real result. Regulated labeling of packaged or ready-to-drink products still requires laboratory verification.

Designing for strength, not just flavor

Strength is a design lever. An aperitivo list that lands between 8% and 12% lets guests have a second round comfortably and often lifts check average more than a stronger, slower drink does. A closing-time list can sit higher on purpose.

If you are building low- and no-ABV options, run each version through this calculator: swapping a 40% spirit for a 17% fortified wine usually cuts finished strength by more than half while keeping the drink's structure. Lengthening with soda is the other lever — adding 2 oz of soda water to a 22% drink drops it to roughly 14%.