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Free recipe scaling calculator for home cooks and bakers. Double a batch, cut a recipe in half, or scale from 8 servings to 12 using one consistent factor. Enter numeric amounts and your ingredient descriptions (cups, grams, eggs, etc.)—the tool multiplies every line the same way.
Last updated: April 12, 2026
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Servings, cookies, slices—any consistent unit.
Enter the amount as a number; describe the unit in the label (e.g. "2" + "cups flour").
Scale factor
1.5×
| Original | Scaled |
|---|---|
| 2 cups flour | 3 cups flour |
| 1 cup sugar | 1.5 cup sugar |
| 3 eggs | 4.5 eggs |
Summary
Scaled by 1.5× based on servings.
Steps
Baking & cooking notes
Linear scaling works well for most ingredients. Very small amounts (a pinch of spice) may need a taste check. Changing pan size or thickness changes bake time: use a pan volume tool when shape matters, not just servings.
Typical use
Meal prep and parties
Enter 2× to batch-cook soups, sauces, and baked goods for the week.
Typical use
0.5× multiplier
Cut waste when a recipe serves more people than you need.
Formula
New ÷ Original
Works for servings, cookies, or any consistent portion count.
You control
Up to 16 lines
Add or remove rows to match your recipe card or blog printout.
Remember
Pan size and time
Combine with pan volume tools when thickness or bake time would change.
Large factors
Up to 500× cap
Sanity limits help catch typos in very large batch planning.
Default: 8 servings → 12 servings (1.5×) with 2 cups flour, 1 cup sugar, 3 eggs:
Flour
3 cups flour
Sugar
1.5 cup sugar
Eggs
4.5 eggs
Professional kitchens and home cooks both rely on one idea: proportional scaling. If you multiply flour, sugar, liquid, and leavening by the same factor, you keep the recipe balanced. Our calculator finds that factor either from a direct multiplier or from serving counts, then applies it to each numeric line you enter.
Scale factor = desired servings ÷ original servingsScaled amount = original amount × scale factorMultiplier mode skips the division step: the factor is whatever you type (for example 2 for double).
This keeps ratios identical—critical for baking chemistry and balanced seasoning in sauces.
Result: 2× batch for meal prep or a crowd
Share it with cooks who batch, meal prep, or bake for events
Suggested hashtags: #Cooking #Baking #Recipes #MealPrep #Calculator