How do I scale a recipe to more or fewer servings?

To scale a recipe, divide the desired number of servings by the original number of servings to get a scale factor. Then multiply every ingredient quantity by that factor. For example, to scale a recipe from 4 to 10 servings, multiply all ingredients by 2.5 (10 ÷ 4). This Recipe Scaler does this automatically.

Can I enter ingredient quantities as fractions?

Yes. Enter quantities as simple fractions (1/4), mixed numbers (2 1/4), or decimals (2.5). The scaler parses all three formats and displays scaled results as clean fractions — ¼ cup, 1⅓ tsp — rather than rounded decimals.

Does scaling a recipe always work perfectly for baking?

Scaling ingredient quantities works well for most recipes, but baking has some nuances. Leavening agents (baking soda, baking powder, yeast) should be scaled slightly less than the exact ratio — typically by about 25% less when doubling. Pan size and baking time are not automatically adjusted by scaling and must be considered separately.

How do I halve a recipe?

To halve a recipe, set the original servings to the recipe's yield and the target servings to half that number. For example, if the recipe makes 12 cookies, set original to 12 and target to 6. The scale factor will be 0.5 and all ingredient quantities will be halved automatically, displayed as clean fractions.

Recipe Scaler

Scale any recipe up or down for any number of servings

Recipe name (optional)

Original servings

Target servings

Scale factor:2× (scaled up)

Ingredient	Original amount	Scaled amount
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Tips for scaling recipes

Enter quantities as fractions (1/4), mixed numbers (2 1/4), or decimals (2.5)
For items like eggs or garlic cloves, leave the unit blank — the scaler handles whole-number counts
When halving baked goods, reduce leavening agents (baking soda, baking powder) by slightly less than half
Pan size and baking time may need adjustment when scaling baked goods — scaled quantities don't automatically account for this
Use the Copy button to paste the scaled recipe into a notes app or document

About the Recipe Scaler

This free recipe scaler instantly adjusts ingredient quantities for any number of servings. Enter your original recipe, set the target serving count, and every ingredient scales automatically — displaying results as clean fractions like ¼ cup or 2½ tbsp rather than awkward decimals.

The tool handles all common cooking units: teaspoons, tablespoons, cups, fluid ounces, pints, quarts, gallons, milliliters, liters, ounces, pounds, grams, and kilograms. For items like eggs or garlic cloves that have no unit, simply leave the unit field blank.

Need to convert between unit systems? Use our volume converter or weight converter for precise metric ↔ imperial conversions. For international recipes using different cup sizes, see our International Cooking Conversions guide.

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Recipe Scaler

Scaled Recipe

Tips for scaling recipes

About the Recipe Scaler