Recipe Scaler: How It Works and How to Use It
Scale any recipe's ingredient list up or down to match the number of servings you need.
Like every tool on UltimateTools, it runs instantly in your browser, updates as you type, and doesn't require an account or sign-up to use.
What it calculates
Resize any recipe's ingredients to a new serving size.
Whether you think of it as a "recipe scaler" tool, a "recipe converter or double a recipe calculator" tool, or simply the Recipe Scaler, this page covers the same calculation.
You can find it at any time on the Recipe Scaler page, where the calculator sits above a full explanation of the method it uses.
Tips for an accurate result
Ingredient weight-per-volume varies by how packed or sifted it is — when a recipe's success matters, weigh rather than measure by volume where you can.
Always verify doneness with a thermometer for meat, regardless of what a converted time or temperature suggests.
When converting a recipe between systems, convert the whole recipe at once and write it down, rather than converting each measurement on the fly while cooking.
Keep to one measurement system (metric or US customary) throughout a recipe to avoid small rounding errors compounding.
Related tools worth trying
If you found the Recipe Scaler useful, Air Fryer Converter, Cooking Measurement Converter, Cooking Time & Temperature Converter cover closely related ground and are worth a look next.