Batch Yield and Servings Calculator

How it works

A batch serves as many people as the number of whole portions it holds. The calculator converts the batch to the portion's unit, divides, and counts the whole servings; whatever is less than one portion is shown as left over. Weights and volumes cannot be mixed, because converting a cup to an ounce needs the food's density.

Working backwards, the batch needed is the number of servings times the portion size, shown in the batch unit.

A pan cut into a grid gives rows × columns pieces, each the pan's length divided by the number of columns by its width divided by the number of rows.

Planned portion sizes for school meals are published in the USDA Food Buying Guide for Child Nutrition Programs; for example, 1 pound of raw ground beef (no more than 15% fat) cooks to 0.75 pound (12 ounces), which the guide counts as 8.00 servings of 1½ ounces.

Formula

exact servings = batch (in portion units) ÷ portion size
servings = exact servings rounded down to a whole number
left over = batch − servings × portion size
batch needed = servings needed × portion size
grid pieces = rows × columns;  piece = (length ÷ columns) × (width ÷ rows)

Example

Six cups of frosting at 4 tablespoons a cupcake: 6 cups is 96 tablespoons, and 96 ÷ 4 = 24 servings with nothing left over.

Twelve ounces of cooked ground beef at 1½ ounces a serving is 8 servings. Fifty servings of 4 tablespoons need 200 tablespoons, or 12.5 cups. A 9 × 13 in pan cut 4 rows by 6 columns gives 24 pieces of 2.17 × 2.25 in.

Assumptions and limitations

• The batch is assumed uniform and every portion the same size; real portioning by scoop, ladle or knife varies, and some is lost to the pan, the spoon and trimming.
• Weights and volumes are US customary or metric as chosen; cups, pints, quarts and gallons are US measures.
• Grid pieces assume straight cuts that divide the pan evenly; the width of the knife and any trimmed edges are ignored.
• Ground beef serving figures are from the USDA Food Buying Guide for Child Nutrition Programs, Section 1 Meats/Meat Alternates (Beef, Ground, fresh or frozen, no more than 15% fat: "1 lb AP = 0.75 lb cooked, drained, lean meat", 8.00 servings of 1-1/2 oz cooked lean meat per pound).

Frequently asked questions