Batching a cocktail for a party means multiplying a single-serving recipe up to however many drinks you need — without throwing off the balance that makes the drink taste right. This calculator applies the same scale factor to every ingredient so the ratio holds no matter the batch size.
How the Cocktail Scaling Calculator works
The calculator takes your single-serving recipe — each ingredient's amount in fluid ounces — and multiplies every one by your target number of servings. Because the same multiplier applies to every ingredient, the proportions stay locked to your original recipe: a margarita that's 2 parts tequila to 1 part triple sec to 1 part lime to 0.5 part syrup stays exactly that ratio whether you're making 1 drink or 100.
It also converts the scaled totals into standard 750 mL bottle counts, so you know how many bottles of each spirit to buy, and estimates a dilution amount for recipes that are pre-batched rather than shaken or stirred to order.
Inputs and what they mean
Each ingredient row takes a name and an amount in fluid ounces per single serving — the amount you'd use for one drink. The target servings field is how many total drinks you're batching for. There's no upper limit on ingredient rows; add as many as your recipe calls for.
Fresh citrus juices, carbonated mixers, and garnishes are best treated as exceptions — see the FAQ below for guidance on which ingredients to batch ahead versus add at serving time.
Limits and edge cases
The math assumes every ingredient scales linearly, which holds for spirits, juices, and syrups. It does not model flavor perception at scale — very large batches sometimes taste slightly different due to prolonged contact between ingredients (citrus oxidizing, herbs steeping longer), so taste and adjust before serving. Carbonated ingredients (soda, tonic, sparkling wine) should never be pre-batched; add them fresh to each glass or to the punch bowl just before serving so they don't go flat.