Recipe Scaler
Scale any recipe up or down by servings. Enter the original and desired servings and your ingredients to get every amount adjusted, with cups and spoons in friendly kitchen fractions and grams or milliliters as decimals. Calculates in your browser.
Scale factor
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Scaled ingredients
Show the math
Every ingredient is multiplied by the same scale factor:
factor = desired servings ÷ original servings
Scaling works perfectly for the main ingredients, but use judgment with seasonings, leaveners, and cooking times, these rarely scale in a straight line. Taste as you go and adjust baking times for a larger or smaller tin.
What this does
A recipe scaler adjusts any recipe up or down by servings, recalculating every ingredient amount, with cups and spoons shown as friendly kitchen fractions and metric amounts as decimals.
How to use it
- Enter the original servings.
- Enter the servings you want.
- List your ingredients and amounts.
- Read every adjusted amount.
How it works
Every ingredient is multiplied by the same factor. Cooking times, temperatures, and seasonings rarely scale in a straight line, so taste as you go.
factor = desired servings ÷ original servings
Understanding your result
Every ingredient scales by the same factor, but seasoning, leavening, and cooking times do not follow in a straight line. Salt and spices are easy to overdo at larger batches, and a bigger pan changes the timing, so adjust those to taste and check doneness rather than trusting the scaled numbers blindly.
Example
Scaling a 4-serving recipe to 6 multiplies each amount by 1.5.
Last updated .
Frequently asked questions
How does scaling work?
Every ingredient is multiplied by the same factor, which is your desired servings divided by the original servings. Doubling the servings doubles each amount; halving them halves each amount.
Do cooking times scale too?
No. Times, temperatures, seasonings, and leaveners rarely scale in a straight line. Treat the scaled amounts as a starting point, taste as you go, and adjust the bake time for a larger or smaller tin.
Why are some amounts shown as fractions?
Cooks measure cups and spoons in fractions, so those amounts snap to common kitchen fractions like 1/3 or 1 1/2, and amounts of 10 or more show one decimal place. Metric amounts (grams, kilograms, milliliters, liters) are weighed or measured, so they show as decimals instead: whole numbers from 100, one decimal from 10, and two below that.
Is my recipe stored?
No. Everything is calculated locally in your browser, nothing you type is uploaded or saved.
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