Recipe Scaler Calculator
Need to adjust a recipe for a different number of servings? This recipe scaler helps you scale ingredients up or down proportionally by servings. Whether you are cooking for a crowd or making a smaller batch, get accurate measurements for any serving size. Add up to six ingredients and read off the scaled amounts directly.
Reviewed by the SparkCalc editorial team
How We Calculate This
Scale factor = Desired Servings / Original Servings. Each ingredient is multiplied by the scale factor. Fractions are approximated to common cooking measurements (1/4, 1/3, 1/2, 2/3, 3/4).
Sources: NIST Office of Weights and Measures — Metric Kitchen: Cooking Measurement Equivalencies · U.S. FDA — 21 CFR 101.9 Nutrition Labeling of Food (household measure definitions)
Frequently Asked Questions
How do I scale a recipe?
Divide desired servings by original servings to get the scale factor. Multiply each ingredient by this factor. For example, doubling a recipe means multiplying everything by 2.
Do all ingredients scale equally?
Most do, but some ingredients like spices, salt, leavening agents (baking powder/soda), and eggs may not scale linearly. Taste and adjust seasonings. For baking, precise scaling is more critical.
How do I convert measurements?
3 teaspoons = 1 tablespoon. 4 tablespoons = 1/4 cup. 16 tablespoons = 1 cup. 2 cups = 1 pint. 4 cups = 1 quart.
What about cooking time?
Cooking time does not scale linearly with quantity. Larger batches may need longer cooking times. Watch for doneness rather than relying solely on time.
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Add this free calculator to your own website. Copy the code below and paste it into your page’s HTML — it’s responsive and resizes to fit.