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Recipe portions

Scale an ingredient quantity to a new number of servings.

One ingredient at a time, using the same unit before and after (g, mL, spoons…). Serving counts are positive integers. Example: 250 g for 4 servings → 375 g for 6. No rounding to whole ingredients or adjustment of cooking time. Repeat for each ingredient.

Both dots and commas are accepted as decimal separators.

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Method and assumptions

Method version 1.0.0 · Updated

Scale an ingredient

Formula: New quantity = quantity × desired servings / original servings

One ingredient at a time, using the same unit before and after (g, mL, spoons…). Serving counts are positive integers. Example: 250 g for 4 servings → 375 g for 6. No rounding to whole ingredients or adjustment of cooking time. Repeat for each ingredient.

quantity
Original ingredient quantity
original
Original servings
desired
Desired servings

Non-negative quantity with at most 12 integer digits and 6 decimal places; 1 to 1,000,000 servings. Direct proportion, approximate result displayed with at most 12 significant digits.