Scale recipe ingredients up or down by servings. Smart fraction display and quick multiplier buttons.
Enter your values
Open the Recipe Scaler and fill in the required input fields with your numbers or selections.
Review the calculation
The tool automatically computes the result as you type. Double-check your inputs to ensure accuracy.
Interpret your results
Review the calculated output along with any breakdowns, charts, or explanations provided to understand what the numbers mean for your situation.
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Enter your ingredients and adjust the serving size to scale your recipe up or down instantly.
Scaling a recipe means adjusting all ingredient quantities proportionally so the dish works for a different number of servings. The basic math is simple: divide the desired servings by the original servings to get a scale factor, then multiply every ingredient amount by that factor. A recipe for 4 that you want to serve 8 gets a 2x multiplier — every measurement doubles.
Cooking is more forgiving than baking, but fractions still matter. When you scale a recipe that calls for 1/3 cup of sugar by 1.5x, you get 1/2 cup — a clean conversion. But scaling that same 1/3 cup by 2x gives you 2/3 cup, and scaling by 3x gives a full cup. This tool converts decimals into common kitchen fractions (1/4, 1/3, 1/2, 2/3, 3/4) so you can measure with standard cups and spoons instead of reaching for a calculator.
Doubling a recipe does not mean doubling the cooking time. Stovetop dishes like soups and sauces may need slightly more time because a larger volume takes longer to heat through, but the increase is usually modest — roughly 10-15% more time, not double. Baked goods are trickier: if you increase the batch size but keep the same pan size, you may need to lower the temperature by 25°F (15°C) and extend the baking time. If you use a larger pan to maintain the same depth, the original time and temperature often work fine.
When measuring scaled ingredients, these equivalences are useful: 1 cup = 16 tablespoons = 48 teaspoons. 1 tablespoon = 3 teaspoons. 1 cup = 8 fluid ounces. Knowing these relationships lets you convert awkward measurements — for example, 3/4 tablespoon is easier to measure as 2 1/4 teaspoons. This recipe scaler handles the multiplication for you, but understanding the relationships helps when you are working with unusual fractions.