Batch Cocktail Calculator

Start by entering your single serving cocktail recipe. You can type in each ingredient manually or use one of the quick preset buttons to load a popular recipe. For each ingredient, enter the name, the amount for one drink, the unit of measurement, and the category (spirit, mixer, juice, or other).

Next, set the number of guests and how many drinks you expect each person to have. The calculator multiplies your recipe accordingly and converts the totals into practical measurements: ounces, cups, liters, and the number of standard 750ml bottles to purchase.

Review the shopping list, which groups items by category so you can move through the store efficiently. If you want to estimate costs, expand the cost estimator section and enter the price for each bottle or item to see the total batch cost and cost per drink.

Scaling a cocktail is more than just multiplying every ingredient by the number of servings. The biggest factor most people overlook is dilution. When you shake or stir a single cocktail with ice, about 25% of the final volume comes from melted ice water. In a large batch, there is no shaking step, so you need to add that water manually. A good starting point is about 1 oz of water per serving in the batch.

Sweetness and acidity also behave differently at scale. When you multiply a recipe by 20 or 30, small imbalances become much more noticeable. It is a good practice to scale the sweet and sour components to about 80 to 90 percent of the calculated amount, taste the batch, then adjust upward as needed. You can always add more, but you cannot take it away.

For spirits, scale the full amount. The alcohol content is what carries flavor in the drink, and under pouring spirits will make the batch taste flat. If anything, round up on spirit quantities so you have a small buffer for spillage and heavier pours.

The best approach is to combine all non carbonated, non perishable ingredients into a large container and refrigerate overnight. This includes spirits, syrups, and shelf stable juices. The flavors will marry together in the fridge, which actually produces a smoother tasting batch than mixing everything right before the party.

Fresh citrus juice should be squeezed the day of the event. Lime and lemon juice stay vibrant for about 4 hours after squeezing. After that, the flavor starts to turn dull and slightly bitter. If you are prepping for a large party, squeeze your citrus as one of the last steps before guests arrive.

Carbonated ingredients such as club soda, tonic water, ginger ale, and sparkling wine should only be added right before serving. If you add them too early, the batch will go flat. One practical approach is to fill the punch bowl or dispenser with the base batch and keep the carbonated bottles on the side. Either add them in small batches as the bowl is refilled, or let guests top off their own glasses.

A standard 750ml bottle of liquor contains about 25 oz, which is roughly 12 to 13 standard cocktails at 2 oz of spirit per drink. For a party of 20 guests with 2 drinks each, you would need about 3 bottles of the primary spirit. Wine bottles hold about 25 oz as well, which works out to about 5 glasses per bottle.

Always buy more than the calculator suggests. A buffer of 10 to 15 percent is standard because guests pour differently than a measured recipe, some liquid is lost to spills, and you may want leftovers for yourself after hosting. Most liquor stores accept returns on unopened bottles, so there is little risk in buying an extra bottle or two.

If you are serving a single signature cocktail, you can be precise with your shopping list. If you are offering multiple drink options, lean toward versatile spirits that work across several recipes. Vodka, bourbon, and white rum are good all purpose choices that cover a wide range of classic cocktails.