Scale a cocktail recipe to any batch size

Enter each ingredient with its single-serving amount and unit, then choose the number of drinks you need. The calculator applies the same proportion to every row, preserves the units you supplied, and returns both the original and scaled amounts in a clear structure suitable for a prep sheet, party plan, bar service checklist, or automated workflow.

Start with a true single-serving recipe

Use the quantities that make exactly one finished drink. Add one row for every measured component, including base spirits, modifiers, citrus, syrup, bitters, dilution water, or a countable garnish when you want it included in purchasing. Give each row a clear name, a non-negative numeric amount, and a unit such as fluid ounces, milliliters, dashes, teaspoons, or pieces. The calculator does not convert units because preserving the source unit avoids hidden assumptions about density, regional measure sizes, and bar technique. For example, two fluid ounces of gin remain fluid ounces after scaling, while one dash of bitters remains dashes. Keep all rows internally consistent, especially when similar ingredients use different systems. If your source recipe describes a pitcher or several drinks already, divide it into a one-drink recipe before using this capability. That single-serving baseline is what makes the requested serving count equal to the scale factor and keeps the result straightforward to audit. Zero is accepted for an intentionally listed component, but negative, missing, or non-numeric amounts are rejected rather than silently producing a misleading batch.

Choose the batch serving count and read the result

Set target_servings to the number of cocktails you intend to produce. The value must be positive, and it may be fractional when testing a smaller pour or planning a partial yield. Because the submitted recipe represents one serving, the tool multiplies every ingredient amount by that target number. A recipe containing 2 ounces of spirit and 0.75 ounce of juice becomes 16 ounces and 6 ounces for eight servings. The response reports the target, the scale factor, and one result row per ingredient. Each row retains the cleaned ingredient name and unit and shows original_amount beside scaled_amount, which makes review easy before anyone starts pouring. Calculations use deterministic numeric handling and stable precision so identical inputs yield identical JSON outputs. Units are labels rather than conversion instructions: entering milliliters returns milliliters, and entering bottles returns bottles. If a scaled value is awkward for real equipment, round it only after deciding the operational tolerance appropriate to that ingredient. Small errors in bitters may be acceptable; the same rounding in a strong spirit or acid component can change balance across a large batch.

Plan batching without losing cocktail balance

Proportional scaling preserves the mathematical ratio of the original recipe, but good batch preparation still requires practical judgment. Use the output as the ingredient plan, then account separately for factors that are not ordinary recipe quantities. Ice added during shaking or stirring creates dilution, fresh citrus can vary in acidity, carbonated ingredients may need to be added near service, and fragile garnishes should often be prepared separately. For a make-ahead batch, many bartenders measure still ingredients together, chill the mixture, and reserve sparkling wine, soda, tonic, or foam for individual pours. Confirm the total container volume before mixing and leave headroom for safe transport and stirring. When purchasing, compare the scaled amount with actual package sizes and round purchases upward rather than changing the recipe ratio. Run separate calculations if you need multiple batch vessels; this avoids cumulative hand-copying errors. The API price is $0.002 per request, so the same calculation can be embedded in event-planning software, prep workflows, or a bar inventory tool. Save the original input with the result so staff can trace every batch quantity back to the single-drink specification.