Recipe Scaling Calculator
Scale ingredient quantities up or down for a different number of servings, including fraction amounts.
Frequently asked questions
Is this tool free?
Yes. Calchemy tools are free to use in your browser.
Is my data uploaded?
No. The tools are designed to run locally in your browser unless clearly stated otherwise.
What format should I paste ingredients in?
One ingredient per line, with the quantity first, for example '200g flour' or '1 1/2 cups sugar'. Lines without a leading number are copied through unchanged.
Does it handle fractions?
Yes. Quantities like 1/2, 3/4 or 1 1/2 are recognised and scaled, and the result is shown as both a decimal and the nearest simple fraction (to the nearest eighth).