UtilityBaseCalculators
Recipe Scaler
Scale a whole recipe up or down by servings — with clean fractions, not ugly decimals.
Updated July 13, 2026
How to use the recipe scaler
- 1Paste your ingredient list, one ingredient per line.
- 2Set the original servings and the new servings you want.
- 3Or tap a quick preset — half, double, or triple.
- 4Copy the rescaled list; toggle fractions or decimals to taste.
Common uses
- Doubling a recipe for a bigger crowd
- Halving a recipe to cook for one or two
- Adjusting servings to match what you have on hand
- Converting a recipe to a specific number of portions
Frequently asked questions
How does it handle fractions?
It reads fractions (3/4), mixed numbers (1 1/2), and unicode fractions (½, ¾), scales them, and snaps the result to a friendly cooking amount rounded to the nearest eighth or third. So doubling ¾ cup gives 1 1/2 cups, not 1.5. You can toggle to plain decimals if you prefer.
What about lines without a number?
Ingredients like 'salt to taste' or 'a pinch of nutmeg' have no quantity to scale, so they pass through unchanged. Only the leading number on each line is multiplied; the ingredient name and unit stay as written.
Does everything in a recipe scale linearly?
Ingredients usually do, but cooking doesn't always. Pan sizes, baking times, and leavening (yeast, baking soda) often need judgment rather than a straight multiply, especially when more than doubling or halving. Use the scaled quantities as a strong starting point and adjust technique as needed.
About this tool
The recipe scaler multiplies every ingredient in a recipe by the servings ratio you need. Paste your ingredient list, set the original and new serving counts (or tap half, double, or triple), and it rescales each line at once — handling whole numbers, decimals, fractions like 3/4, mixed numbers like 1 1/2, unicode fractions (½, ¾), and ranges (1–2). Results snap to friendly cooking fractions so you get ¾ cup, not 0.75. Lines without a quantity, like 'salt to taste,' pass through untouched. Unlike a unit converter, this changes the amounts, not the units. Everything runs in your browser.
Like most tools on UtilityBase, the recipe scaler runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more calculators here.
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