Recipe Scaler
Scale a recipe up or down by servings or by a factor, with kitchen-friendly fractions and optional metric or US unit conversion. Your work stays on this device whenever possible.
How to use Recipe Scaler
- Paste the ingredient list, one ingredient per line with the amount first.
- Enter how many servings the recipe makes and how many you want, or pick ½, 2x or 3x.
- Choose whether to keep the units, tidy them (6 tsp becomes 2 tbsp), or convert between metric and US.
- Copy, download or print the scaled list.
Worked example
A lasagne for 6 scaled to 4 (×0.667): 1 lb ground beef becomes ⅔ lb, 15 oz ricotta becomes 10 oz, and 3 cups sauce becomes 2 cups. With "Convert to metric" on, those become 302 g, 283 g and 473 ml.
When to use this tool
- Halving a family recipe for two or doubling it for a party.
- Converting US cup recipes to metric millilitres and grams (for weights) for kitchens outside the US.
Important limitations
Cups and spoons are converted to millilitres, not grams, because a cup of flour and a cup of sugar weigh different amounts.
Frequently asked questions
How do I scale a recipe?
Every amount is multiplied by new servings ÷ original servings. For example, going from 4 to 6 servings multiplies everything by 1.5. The tool does this for every line and rounds to fractions you can measure, like ⅓ or ¾.
Which amount formats does it understand?
Whole numbers, decimals (1.5 or 1,5), fractions (1/2, 1 1/2), unicode fractions (½, 1¾) and ranges (2-3 or 2 to 3), followed by common units: cups, tbsp, tsp, fl oz, pints, quarts, gallons, ml, l, oz, lb, g and kg.
Why aren't cups converted to grams?
A cup is a volume, and a cup of flour weighs about 120 g while a cup of sugar weighs about 200 g. Converting without knowing the ingredient would give a wrong number, so cups become millilitres. Ounces and pounds do become grams, because they are weights.
What happens to eggs when I scale?
Countable items like eggs, cloves or lemons get a note such as "about 1½: round to 2", so you can decide. For half an egg, beat one egg and use half.
Do baking times change?
Often, yes. A bigger batch in a bigger or deeper pan usually needs longer at the same temperature, so check it early and often. The tool scales the ingredients only.