Scale Any Recipe to the Servings You Need
Recipe Scaler adjusts every ingredient quantity when you cook for more or fewer people. Enter the original servings and the number you want to make, and the tool instantly recalculates each amount for you.
Instead of doing mental math with fractions and odd measurements, you get results in easy-to-read fractions like ½, ⅓, and ¾ — the way recipes are actually written. Double a dish for a party, halve it for a solo meal, or hit any serving count in between.
Who Is This For?
- Home cooks adjusting family recipes for different group sizes
- Bakers who need precise ingredient ratios when scaling up or down
- Meal preppers calculating bulk ingredient quantities
- Party hosts multiplying a recipe for a large gathering
How to Use Recipe Scaler
Set the servings
Enter the Original Servings from your recipe, then set Scale To to the servings you want. The scale factor updates automatically. For common changes, tap the quick buttons: ½x, 1x, 2x, 3x, or 4x.
Add your ingredients
For each row, type the ingredient name, a quantity (whole number, decimal, or fraction like 1/2 or 1 1/2), and pick a unit from the dropdown. Use Add Ingredient for more rows.
Or paste a whole list
Click Paste and drop in an ingredient list copied from a recipe. The tool parses lines such as "2 cups flour", "1/2 tsp salt", and "3 eggs" — including bulleted and numbered lists and unicode fractions like ½ — into rows for you.
Read the scaled column
The Scaled value next to each ingredient shows the adjusted amount in friendly fractions. When the scale factor differs from 1x, the scaled values are highlighted so they are easy to spot.
Save, copy, or reuse
Click Save Recipe to store the list under a custom name in the collapsible Saved Recipes panel, or use Copy Scaled Recipe to copy the results as text for notes or a shopping list. Reload any saved recipe with one click.
Features
Scale by Serving Count
Set the original and target servings and every ingredient is recalculated against the resulting scale factor automatically.
Quick Scale Buttons
One tap applies a common change — ½x, 1x, 2x, 3x, or 4x — without typing the target servings yourself.
Smart Fraction Display
Scaled amounts show as readable fractions (⅛, ¼, ⅓, ½, ¾) instead of awkward decimals like 0.333.
Intelligent Rounding
Quantities round to practical cooking amounts — small values keep more precision, larger values round to halves or whole numbers.
Flexible Quantity Input
Enter whole numbers (2), decimals (0.5), simple fractions (1/2), or mixed fractions (1 1/2) — the tool understands them all.
Paste & Auto-Parse
Paste an ingredient list from any recipe and the tool recognizes bulleted lists, numbered lists, unit abbreviations, and unicode fractions.
30+ Measurement Units
Volume (cup, tbsp, tsp, ml, l, fl oz, pint, quart, gallon), weight (g, kg, oz, lb), and count units like piece, dozen, pinch, clove, and slice.
Save Recipes Locally
Store up to 20 recipes with custom names in your browser and reload any of them with a single click to rescale.
Copy to Clipboard
Copy the scaled list as formatted text, ready to paste into notes, messages, or a shopping list.
Frequently Asked Questions
How do I scale a recipe up or down?
Enter your recipe's original servings, then set Scale To above or below that number. The tool divides the target by the original to get a scale factor and applies it to every ingredient. For example, going from 4 to 8 servings scales everything by 2x; going from 4 to 2 halves it.
How do I double or halve a recipe?
Use the quick buttons. Tap 2x to double the recipe or ½x to halve it, and the target servings and all scaled amounts update at once. The 3x and 4x buttons cover larger batches.
What is the scaling factor formula?
The scale factor is the desired servings divided by the original servings (target ÷ original). The tool calculates it automatically and shows it as a multiplier like 1.5x or 2x, then multiplies each ingredient quantity by that factor.
Can I paste ingredients from a recipe website?
Yes. Click Paste and drop in your ingredient list. The tool parses common formats including "2 cups flour", "1/2 tsp salt", bulleted lists, and numbered lists, and it also understands unicode fractions like ½ and ¼.
How does the fraction display work?
When a scaled quantity is close to a common fraction (⅛, ¼, ⅓, ½, ⅔, ¾), it displays the fraction symbol instead of a decimal — so 0.5 shows as ½ and 0.333 shows as ⅓. Values that do not match a common fraction are rounded to two decimal places.
What units are supported?
Over 30 units, including cups, tablespoons (tbsp), teaspoons (tsp), ounces (oz), pounds (lb), grams (g), kilograms (kg), milliliters (ml), liters (l), fluid ounces, pints, quarts, gallons, and count-based units like piece, dozen, pinch, dash, clove, and slice.
Does cooking time change when I scale a recipe?
This tool scales ingredient quantities, not cooking times. Cook times rarely change in direct proportion to a recipe — a larger batch may need a little longer and a bigger pan, while temperature usually stays the same. Use the scaled amounts as your guide and check for doneness as you normally would.
Where are my saved recipes stored, and is there a limit?
Saved recipes live in your browser's local storage, so they persist across sessions but stay specific to that browser and device. You can keep up to 20 recipes; when the limit is reached, saving a new one drops the oldest. Clearing your browser data removes saved recipes.
Is my data private?
Yes. All calculations happen entirely in your browser, and saved recipes are kept only in your own local storage. No ingredient data or recipes are sent to any server.
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