Recipe Scaler

Recipe Scaler

Enter your ingredients for the original serving count, then scale up or down. Supports grams, milliliters, cups, tablespoons, teaspoons, and more.

How to use

1. Set the original number of servings
2. Add each ingredient with its quantity and unit
3. Set the target number of servings
4. Click Scale recipe: scaled quantities appear next to the originals

Scaling works by simple ratio

Scaled quantity = original quantity × (target servings / original servings)

Example: 200g flour for 4 servings → scaled to 6 servings = 200 × (6/4) = 300g flour

Important notes for baking

Simple ratio scaling works well for most savory recipes but requires care for baking:

• Leavening agents (baking powder, baking soda) do not scale linearly for large batches, use about 75% of the scaled quantity for batches above 3× the original
• Eggs: you can use half an egg (beaten) for odd fractions, or adjust by rounding to the nearest whole egg
• Salt and spices: start with 75% of the scaled quantity and adjust to taste
• Baking time, does not scale with quantity. Keep the same temperature and check for doneness at the original time.

Converting US recipes to UK weights: the cup problem

Most UK bakers weigh ingredients in grams; most US recipes use volume cups. The conversion is not universal, it depends on how densely packed the ingredient is:

The easiest solution: use a kitchen scale and weigh all dry ingredients. This eliminates the cup-size ambiguity entirely (UK metric cup = 250ml; US cup = 240ml, a 4% difference that compounds across a recipe).