CalcLibrary

Recipe Scaler

Scale a full recipe by servings without rewriting every line by hand. Enter your ingredient list once, keep your own unit labels, and get a corrected recipe card immediately.

Examples

Weeknight chili from 4 to 6 servings

Scale a small dinner recipe up for two extra bowls.

Original servings
4 servings
Target servings
6 servings
Ingredients
[{"amount":"1","unit":"lb","ingredient":"ground beef"},{"amount":"1","unit":"can","ingredient":"crushed tomatoes"},{"amount":"1 1/2","unit":"tbsp","ingredient":"chili powder"},{"amount":"1","unit":"cup","ingredient":"stock"}]
Scale factor
1.5x
Calculated from
Servings ratio
Ratio detail
6 / 4
Scaled ingredient list
1 1/2 lb ground beef, 1 1/2 can crushed tomatoes, 2 1/4 tbsp chili powder, 1 1/2 cup stock
Cooking note
Math scales ingredients exactly, but whole eggs, citrus, packages, bake time, and browning still need human judgment.

Examples

Weeknight chili from 4 to 6 servingsScale a small dinner recipe up for two extra bowls.1.5x

How It Works

Formula

f=StSof = \dfrac{S_t}{S_o}

scaled ingredient=original ingredient×f\text{scaled ingredient} = \text{original ingredient} \times f

Variables

ff

Scale factor

StS_t

Target servings

SoS_o

Original servings

Enter the original servings, target servings, and your ingredient rows. The scale factor is target servings divided by original servings. Every ingredient amount is multiplied by that factor while your unit labels and ingredient names stay exactly as entered.

Frequently Asked Questions

01Does this convert cups to grams or ounces?
No. This calculator rescales amounts inside the unit labels you already typed. If you need to convert one cooking unit into another, use the Cooking Converter.
02Will this convert cups to grams or ounces?
No. This calculator rescales amounts inside the unit labels you already typed. If you need to convert one cooking unit into another, use the Cooking Converter.
03Will this tell me exactly how to round eggs or packages?
No. The math can scale 1.5 eggs or 0.6 cans exactly, but real cooking still needs judgment. Use the scaled amount as the starting point and round whole items in a way that makes sense for the recipe.

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