How do I scale a recipe up to a larger amount?

Divide the desired number of servings by the original — that gives you the multiplier. For example, a 4-serving recipe for 6: 6/4 = 1.5×. Multiply all ingredients by 1.5. The calculator does this automatically.

Do you scale spices by the same multiplier?

Not always. Spices, salt and chili are best added to taste, as they do not scale linearly. Start with a smaller amount and add more if needed.

Does the baking time change when I make a large batch?

The baking time does not increase in the same proportion. A bigger dish or several trays may need a little longer, but watch the result rather than just the clock.

How do I halve a recipe?

Use a multiplier of 0.5, i.e. enter the desired servings as half of the original. Halving eggs can be tricky — whisk an egg and use half of it.

Recipe Converter — Scale Servings

Name: Recipe Converter — Scale Servings
Author: Miikka

Scale recipe ingredient amounts to a different number of servings. Enter original and desired servings. Free recipe converter.

By Miikka · CalcBrew · Updated Jun 30, 2026

Recipe servings: 4 servings

Desired servings: 6 servings

Ingredient amount: 200 g/ml

1.50 ×

Multiplier

Scaling factor	1.50 ×
New ingredient amount	300 g/ml

ℹ️ Multiply all recipe ingredients by the resulting factor. Note that spices, leavening agents and salt should not always be scaled directly — taste as you go. Baking time does not change linearly.

This recipe converter scales a recipe's ingredient amounts to a new number of servings in seconds. You enter the original servings and the amount you want, and you get a ready scaling factor along with the new quantities.

How the calculator works and what it’s for▾

How the converter works

The calculator divides your target number of servings by the original number to get a scaling factor. For example, going from a recipe for four to one for six gives a factor of 1.5.

When you multiply each ingredient by this factor, the amounts stay in the same proportion to one another.

What you enter and what you get

Enter the recipe's servings, the number of servings you want and the amount of one ingredient in grams or millilitres. The calculator shows the scaling factor and the new amount of that ingredient.

You can apply the same factor to every other ingredient, so converting a whole recipe is quick.

What not to scale directly

Spices, leavening agents and salt should not always be multiplied straight by the factor — taste as you go. A small recipe can take proportionally more seasoning than a large one.

Cooking time does not change linearly either; a bigger batch may need longer, but not in the same proportion as the quantity grows.

When to use it

The converter is handy when you cook for a different sized group than the recipe assumes, batch-cook for later or halve a portion. Round the results to sensible measurements to make work in the kitchen easier.

🔄 Reviewed June 2026

Frequently asked questions

Cite this calculator

APACalcBrew. (2026). Recipe Converter — Scale Servings. https://calcbrew.com/recipe-converter

MLA“Recipe Converter — Scale Servings.” CalcBrew, 2026, calcbrew.com/recipe-converter.

Link to https://calcbrew.com/recipe-converter. Results are estimates; cite the underlying formula or data source for academic work.

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