Cocktail Recipe Scaler — Batch & Party Calculator
Scaling cocktail recipes for batches, parties, or catering requires more than simple multiplication. Dilution from ice, citrus acidity, and sweetener balance all change with volume. This calculator scales recipes by serving count, converts between ounces and milliliters, and provides batch-size estimates with ice dilution guidance.
Scale a Cocktail Recipe
Enter up to 6 ingredients. The scaler multiplies each ingredient proportionally and shows batch totals in both oz and mL.
This calculator provides estimates for informational purposes only. It is not a substitute for professional consultation with a licensed sommelier, beverage consultant, or regulatory authority. Actual dilution varies with ice size, shaking time, and ambient temperature. For pre-batched cocktails, add the dilution amount as water before chilling.
Tips for Batch Cocktails
Pre-Dilution
When batching cocktails for bottling or large-format service, add the expected dilution as water before chilling. A standard shaken cocktail gains about 25% dilution from ice. So for every 30 oz of base mixture, add about 7.5 oz of water, then chill without ice.
Citrus and Freshness
Fresh citrus juice degrades within 4–6 hours. For large batches, mix spirits and sweeteners ahead of time but add citrus juice as close to service as possible. Alternatively, use citric acid solutions (sometimes called “super juice”) for batches that need longer shelf life.
Frequently Asked Questions
Can I just multiply everything by the number of servings?
For spirits, liqueurs, and syrups, yes — direct multiplication works. For citrus, bitters, and highly concentrated ingredients, taste-test the batch before finalizing. Bitters in particular can become overpowering when scaled linearly, so reduce by about 15% for batches over 10 servings.
How This Calculator Works
The scaler uses linear proportional scaling: each ingredient amount is multiplied by the ratio of target servings to original servings (1). For example, scaling a recipe from 1 to 12 servings multiplies every ingredient by 12. The ice dilution factor adds a calculated volume of water: Dilution = Batch Total × Dilution %. Standard dilution values are based on bartending research — a shaken cocktail gains approximately 25% of its volume from melted ice during a 10–15 second shake. Unit conversions use the standard factor: 1 fl oz = 29.5735 mL. The “parts” option treats all amounts as unitless ratios, useful for recipes that express proportions (e.g., 2:1:1). Estimated bottle counts assume standard 750 mL bottles.
References & Methodology
- Arnold, D. (2014) — Liquid Intelligence: The Art and Science of the Perfect Cocktail. W. W. Norton. Definitive research on ice dilution rates, shaking vs. stirring dynamics, and batch cocktail methodology.
- Morgenthaler, J. (2014) — The Bar Book: Elements of Cocktail Technique. Chronicle Books. Professional bartending techniques including scaling, dilution, and citrus management for large-format service.
- National Institute of Standards and Technology (NIST) — Standard unit conversion factors for fluid ounces, milliliters, and volumetric measurement at standard temperature and pressure.
- Alcohol and Tobacco Tax and Trade Bureau (TTB), 27 CFR Part 5 — Standards of fill and labeling requirements for distilled spirits, relevant to bottle size assumptions in batch calculations.