How to Scale a Recipe
Use a simple scale factor—and know what not to multiply blindly.
What it does and when to use it
Most ingredient amounts scale with servings. Cooking time, pan size, and seasoning do not always scale linearly.
What information to enter
Enter original servings, desired servings, and one ingredient amount at a time.
How to understand the result
The scale factor shows how much to multiply each proportional ingredient.
Recommended step-by-step workflow
- Check the assumptionsMost ingredient amounts scale with servings. Cooking time, pan size, and seasoning do not always scale linearly.
- Use matching unitsEnter original servings, desired servings, and one ingredient amount at a time.
- Compare with another scenarioThe scale factor shows how much to multiply each proportional ingredient.
Formula at a glance
New amount = original amount × desired servings ÷ original servings
Short example
Moving from 4 servings to 6 gives a 1.5 factor; 250 grams becomes 375 grams.
Common mistakes
- Multiplying cooking time by the same factor.
- Rounding small amounts such as yeast or spice too early.
Frequently Asked Questions
Does baking time change?
Not necessarily. It depends on depth, pan, and temperature; test doneness.
How do I scale eggs?
Weigh a beaten egg for fractions, or round and adjust liquids slightly.
Are my personal inputs saved?
No. The calculators and guides are designed for quick browser use without storing your personal input values.