FREE WEB TOOL

Recipe scaler

Scale recipe quantities for a different serving count.

Use tool

How to use it

Calculate a serving-size multiplier and apply it to the first number found on each ingredient line. It works best with simple entries such as “Flour 200 g” where each line contains one quantity.

  1. Enter the original and target serving counts as positive values.
  2. Enter one ingredient per line.
  3. Calculate, then review units, rounding and cooking adjustments manually.
Scale factor
target servings ÷ original servings
Changed text
First numeric value on each line
Units
Text such as g, ml or pieces is kept
Poor fit
Fractions or lines containing several different numbers

4 servings to 6 turns 200 g into 300 g

The scale factor is 1.5, so Flour 200 g becomes Flour 300 g.

A line such as “1/2 piece”, “180–200°C” or “2 eggs (50 g each)” contains multiple numbers; only the first number is scaled. Review every result before cooking.

One multiplier is applied across the ingredient list

Four servings to six means ×1.5; four to two means ×0.5. The tool does not choose different scaling behavior for individual ingredients.

Only the first number on each line changes

Simple one-quantity lines work well. Split compound instructions into separate lines when more than one quantity needs scaling.

Convert fractions to decimals when practical

The cleaner input is 0.5 rather than 1/2 because the tool is not a full culinary fraction parser.

Cooking time and cookware do not scale linearly

Doubling ingredients does not necessarily mean doubling oven time, pan size or seasoning. Those need recipe-specific judgment.

Round impractical quantities yourself

Results such as 1.75 eggs can be mathematically correct but awkward in a kitchen. Round or convert according to the ingredient and desired precision.

Related references: SI prefixes & units · Number formats · Cooking measures