Recipe Scaler
Scale recipe ingredients up or down proportionally for any number of servings.
How to Use the Recipe Scaler
This tool helps you scale any recipe up or down while keeping ingredient proportions perfect. Whether you're cooking for a crowd or halving a recipe for two, the Recipe Scaler does the math for you.
- Enter the original number of servings — this is how many servings the recipe was originally written for (e.g. 4 servings).
- Enter your target servings — the number of servings you actually want to make (e.g. 8 for double, 2 for half).
- Add your ingredients — type each ingredient name, amount and select the unit. Click "+ Add Ingredient" for more rows.
- Click "Scale Recipe" — the tool calculates the proportionally adjusted amounts, displaying friendly fractions where possible (e.g. 1/2, 2/3).
The scaled results are shown in a clear table comparing original and adjusted amounts. The scale factor tells you exactly how much larger or smaller the recipe is.
Frequently Asked Questions
How does the recipe scaler calculate new amounts?
The scaler multiplies each ingredient amount by the ratio of target servings to original servings. For example, if you go from 4 to 8 servings, every ingredient is multiplied by 2 (8/4 = 2). This maintains the exact proportions of the original recipe.
Does it show fractions instead of decimals?
Yes. Where possible, the tool converts decimal results to common cooking fractions like 1/4, 1/3, 1/2, 2/3 and 3/4. This makes it much easier to measure with standard cups and spoons.
Can I scale a recipe for 1 serving?
Absolutely. Enter 1 as your target serving to calculate single-portion amounts. This is useful for meal prepping or cooking for one person.
Should I adjust cooking times when scaling?
Cooking times generally do not scale linearly with quantity. A doubled recipe in a larger pan may need slightly more time, while baking times stay roughly the same if you use a larger pan and keep the same thickness. Always use a thermometer for accuracy.
Does scaling work for baking recipes?
Scaling works well for most baking recipes, though very large multipliers (3x or more) may need adjustments to leavening agents like baking powder and baking soda. As a rule of thumb, increase leavening by only about 75% when doubling rather than 100%.
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