Recipe Scaler Calculator
Example: Recipe for 4 scaled to 10 = multiply by 2.5
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.
Original vs scaled amounts
Scale Factor
Ingredient 1 (Scaled)
Ingredient 2 (Scaled)
Ingredient 3 (Scaled)
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).
Methodology last reviewed: July 2022. How SparkCalc works
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 is responsive and resizes to fit.