A recipe scaler lets you adjust any recipe to a different number of servings by multiplying each ingredient proportionally. Whether you are halving a cake recipe for two or multiplying a soup recipe to feed a dinner party of twenty, this tool handles the maths — including fractions like 1⁄2 and 1 1⁄2 — so every ingredient comes out exactly right.
Servings
Ingredients
Scaled Recipe
How to Use the Recipe Scaler
Adjusting a recipe for a different number of people is one of the most common kitchen challenges. Whether you are cooking for one or feeding a crowd, our free recipe scaler handles the maths instantly — including awkward fractions like 1⁄3 cup or 2 1⁄2 teaspoons — so you spend less time calculating and more time cooking.
Step 1: Set your servings
Enter the number of servings the original recipe makes in the Original servings field. Then type the number you actually need into Desired servings. The tool calculates a precise scaling factor automatically. If you want to double, triple, halve, or quadruple a recipe, use the quick-scale buttons (½×, 2×, 3×, 4×) — they multiply the desired servings by the selected factor in one click.
Step 2: Enter your ingredients
Add each ingredient using the three-column row: amount, unit, and ingredient name. The amount field accepts whole numbers, decimals, simple fractions (1/2), and mixed numbers (1 1/2). The unit dropdown covers all common kitchen measurements — cups, tablespoons, teaspoons, grams, kilograms, ounces, pounds, litres, and millilitres. Leave the unit blank for items measured by count, like eggs or garlic cloves. Click Add ingredient to insert more rows as needed.
Step 3: Scale and review
Click Scale Recipe to apply the factor to every ingredient at once. The results section shows each ingredient with its scaled amount. Where the result is a standard kitchen fraction — 1⁄4, 1⁄3, 1⁄2, 2⁄3, 3⁄4, 1 1⁄2, and so on — the tool displays it as a fraction rather than an ugly decimal. When no clean fraction applies, the value is rounded to two decimal places.
Step 4: Copy and use
Click the Copy button in the results header to copy the full scaled ingredient list to your clipboard as plain text. Paste it into your notes app, a meal-planning document, or a shopping list. The copied text preserves amounts, units, and ingredient names in a clean readable format.
The recipe scaler recalculates instantly whenever you change servings or click a quick-scale button, so you can experiment with different serving sizes without re-entering your ingredients. All data stays in your browser — nothing is stored or sent anywhere.
Frequently Asked Questions
Is this recipe scaler really free?
Yes, this recipe scaler is completely free with no account, no ads-walls, and no limits. You can scale as many recipes as you want. Everything runs locally in your browser.
Is my recipe data safe and private?
Absolutely. All calculations happen entirely in your browser. Your recipe ingredients and servings are never sent to any server, stored, or shared with anyone. You can even use this tool offline once the page has loaded.
How does the recipe scaler handle fractions like 1/2 or 1 1/2?
You can type fractions directly into the amount field — formats like 1/2, 2/3, and 1 1/2 (mixed numbers) are all recognized. The scaler converts them internally to decimals, applies the scaling factor, and then converts the result back to a clean fraction wherever appropriate.
What fraction formats does the tool output?
Results are shown as clean fractions (e.g., 1/4, 1/3, 2/3, 3/4, 1 1/2) for common kitchen measurements. If the result does not simplify to a standard fraction, it is shown as a decimal rounded to two places. Whole numbers always display without a fraction part.
Can I scale a recipe to feed a crowd — say, from 4 servings to 24?
Yes. Enter 4 in the original servings field and 24 in the desired servings field. The scaler calculates a 6× multiplier and applies it to every ingredient. For very large quantities the output uses decimals to keep things unambiguous.
How do I scale a recipe in half?
Either use the ½× quick-scale button, or enter your original servings and type half that number as the desired servings. For example, if the recipe serves 8, set desired servings to 4 and all quantities will be halved automatically.
Can I copy the scaled recipe to paste into a document?
Yes. After scaling, click the Copy Recipe button below the results. The full scaled ingredient list is copied to your clipboard in plain text, ready to paste into any notes app, word processor, or messaging tool.
What units does the recipe scaler support?
The tool supports all common kitchen units: cups, tablespoons (tbsp), teaspoons (tsp), grams (g), kilograms (kg), ounces (oz), pounds (lb), liters (L), milliliters (ml), and a blank unit for items sold by count (eggs, cloves, etc.). You can leave the unit field blank for countable items.