A recipe ingredient scaler (also called a recipe multiplier or divider) helps you adjust the quantities in a recipe when you want to cook more or fewer servings. Instead of manually recalculating every ingredient, you paste your list and instantly get all amounts multiplied or divided by the factor you choose.

Paste your ingredient list into the “Your Ingredients” box – one ingredient per line (e.g. “2 cups flour”). Choose a scaling factor by typing a number or clicking a preset button. The factor can multiply (×) or divide (÷) all amounts. The scaled list appears automatically. You can also switch to “serving ratio” mode if you know the original and desired number of servings.

Yes! The tool understands common fraction formats like 1/2, 1 1/2, or 3/4. Simply type them as you normally would. The output will show decimal approximations (e.g. 0.5 for 1/2) or whole numbers when the result is exact.

Check “Use serving ratio” and enter the original number of servings and the desired target servings. The tool calculates the exact multiplier (target ÷ original) and applies it to every ingredient. For example, scaling from 4 to 10 servings multiplies all amounts by 2.5.

Lines without a leading number (like “pinch of salt” or “vegetable oil for frying”) are left unchanged. The tool only scales entries that begin with a quantity.

Mathematically, yes. However, when scaling a recipe by large factors (e.g. 10× or 0.1×), consider practical cooking limits. Very small quantities may become impractical to measure, and some ingredients (like baking powder) don't scale linearly. Always use your judgment.

No, this scaler only multiplies or divides the numbers; it does not convert between cups, grams, ounces, etc. For unit conversion you would need a separate unit converter. However, you can scale mixed-unit recipes as long as each line starts with a numeric quantity.

Absolutely. This online recipe calculator is 100% free with no registration required. It works right in your browser – no data is ever sent to a server.