Scaled Ingredient Amounts: Each ingredient quantity multiplied by the scale factor. Use these amounts when you prepare your adjusted recipe.
Scale Factor: The ratio of desired servings to original servings. For example, 2× means doubling the recipe.
Units Preserved: If the original called for cups, the result stays in cups. This calculator doesn't convert between measurement systems.
How This Calculator Works
The recipe scaler multiplies each ingredient amount by a simple ratio: desired servings ÷ original servings. This works for any measurement unit and handles fractional amounts. If you're scaling from 4 servings to 8, each ingredient gets multiplied by 2. For 4 to 2, each ingredient is multiplied by 0.5. Decimal results are rounded to two places for practical cooking.
Quick Questions
Do I need to round the decimal amounts?
For most home cooking, rounding to the nearest tablespoon or reasonable fraction works fine. The calculator shows decimals for precision, but cooking is forgiving with small variations.
Can I convert units (cups to grams)?
This calculator scales proportions only. For unit conversions, use our Cooking Converter calculator instead.
Does this work for spices and seasonings?
Yes, but season to taste. Spices don't always scale linearly—doubling the salt might make food too salty. Start with the scaled amount and adjust.