A cocktail ratio calculator uses classic cocktail formulas to give you precise ingredient amounts for any serving size — from a single glass to a party pitcher.
Ingredients
Understanding Classic Cocktail Ratios
Classic cocktail formulas are based on ratios, not fixed volumes. The 2:1:1 sour ratio works whether you're making 1 oz, 2 oz, or 20 oz per ingredient — the proportions stay constant.
The Sour Formula (2:1:1)
Spirit : Sweet : Sour. Margarita uses tequila, Cointreau, and lime juice. Daiquiri uses rum, simple syrup, and lime juice. Whiskey sour uses bourbon, simple syrup, and lemon juice. All follow the same 2:1:1 template.
Batching for Parties
When batching, add 20-25% water to compensate for the dilution you'd normally get from shaking with ice. Combine all ingredients except carbonated mixers in advance. Add sparkling water or soda at service time.
Frequently Asked Questions
What is the ratio for a classic margarita?
2:1:1 — 2 parts tequila : 1 part Cointreau/triple sec : 1 part lime juice. This is the standard sour ratio. Scale to single serving: 2 oz tequila, 1 oz Cointreau, 1 oz lime juice.
What is the sour ratio?
2:1:1 is the classic sour formula — 2 parts spirit : 1 part sweet (simple syrup or liqueur) : 1 part sour (citrus juice). This applies to margaritas, daiquiris, whiskey sours, and sidecars.
How do I scale cocktails for a party?
Multiply all ingredients by the number of guests. Pre-batch into a pitcher or punch bowl. Omit ice from the batch (ice from individual glasses dilutes at service). Add 20-25% extra water to compensate for dilution you'd normally get from shaking.
Is this tool free?
Yes, completely free.