Does it scale every ingredient linearly?

Yes - quantities are multiplied by `target / original`. That's correct for most recipes, but seasonings, leavening (baking soda/powder) and salt often need a smaller bump than a straight ratio when scaling up a lot. Use judgement at extremes.

Can I scale baking recipes the same way?

For 0.5x-2x scaling it's usually fine. Beyond that, bake times, pan size and crust-to-crumb ratio shift in ways the math can't capture. Treat the calculator as a starting point and adjust.

What about fractional results like 1.33 cups?

We show fractional values rounded to 3 significant figures. For tricky fractions, convert to the smaller unit (1.33 cup → ~317 ml or ~21 tablespoons) using our unit converter.

Recipe Scaler

Scale a recipe up or down by servings or a multiplier.

Runs in your browser

Type your ingredient list, set the original and target servings, and we'll scale every quantity to match. Works for any units - grams, cups, tablespoons, whatever. The list stays in your browser; we don't send it anywhere.

Original servings

Target servings

Multiplier

× 1.5

Quantity

Unit

Name

Scaled

300 g

Scaled300 g

150 ml

Scaled150 ml

3 tsp

Scaled3 tsp

How to use it

Set original and target servings
Tell us what the recipe yields today and what you want it to yield. The multiplier appears next to the controls.
Add your ingredients
One ingredient per row: quantity, unit, and name. Use the + button to add more rows. The scaled column updates as you type.
Copy the scaled list
The right column is your scaled recipe. Hit Copy to grab the whole list or pull individual quantities as you cook.

What is it?

A recipe scaler multiplies every ingredient quantity by the same factor so the recipe yields a different number of servings while keeping proportions intact. The factor is `target servings / original servings`: scale 4 servings to 6 and everything is multiplied by 1.5. Useful when the recipe was written for a different family size, when you're feeding a crowd, or when you only have a partial bag of an ingredient and want to plan around it.

When to use it

Anytime the recipe servings don't match what you want to cook. Common cases: a cookbook recipe that serves 8 when you're cooking for 2, a website's 'serves 4' that you want to double for guests, a chef-style recipe with awkward yields (12 portions) you want to right-size. Also for portion planning when you know the per-person quantity but need to scale to total amounts for a shopping list.

Common mistakes

Scaling salt and leavening by the same factor as everything else - they don't behave linearly. Scaling cooking time by the same factor too: a double recipe doesn't take 2× the bake time, but a wider/deeper pan changes everything. And forgetting that pan size matters - doubling a brownie recipe in the same pan gives you a thicker, undercooked centre.

FAQ

Does it scale every ingredient linearly?: Yes - quantities are multiplied by `target / original`. That's correct for most recipes, but seasonings, leavening (baking soda/powder) and salt often need a smaller bump than a straight ratio when scaling up a lot. Use judgement at extremes.
Can I scale baking recipes the same way?: For 0.5x-2x scaling it's usually fine. Beyond that, bake times, pan size and crust-to-crumb ratio shift in ways the math can't capture. Treat the calculator as a starting point and adjust.
What about fractional results like 1.33 cups?: We show fractional values rounded to 3 significant figures. For tricky fractions, convert to the smaller unit (1.33 cup → ~317 ml or ~21 tablespoons) using our unit converter.

Unit Converter

Convert length, weight, temperature, volume and more.

Tip Calculator

Calculate the tip and split the bill between any number of people.

Percentage Calculator

Five percent modes in one tool: X% of Y, percent change, reverse percentage, plus add or subtract a percent.