Recipe Scaler Calculator
Enter the original servings, your target servings, and one ingredient amount to scale a recipe up or down.
Inputs
Result
Visual breakdown
Formula
Scale factor = desired ÷ original. Scaled amount = ingredient × scale factor. Use the same scale factor for every ingredient in the recipe.
Example
Recipe for 4 doubled to 8 → ×2; 250 g flour becomes 500 g.
Related: Batch portions · Cooking measurements · Unit converter
How to use
- Apply the same scale factor to every ingredient in the recipe.
- Scale spices, salt, and leaveners gently — taste and adjust.
- For unit conversions (cups ↔ grams), use Cooking Measurement Converter alongside this.
When it's useful
- Doubling or halving a recipe.
- Adjusting a recipe to fit servings.
- Prepping a batch for guests.
Common examples
Frequently asked
How is this different from Cooking Measurement Converter?
Recipe Scaler changes amount based on servings; Cooking Measurement Converter changes units (e.g., cups to grams). They pair well.
Should baking recipes be scaled the same way?
Use caution — baking is ratio-sensitive. Small scale changes are fine; big jumps can need eggs or leavening adjustments.
Can I scale by less than 1?
Yes — halving a recipe is scale factor 0.5. Quartering is 0.25.
Does the scale factor change cook time?
Not directly. Volume can affect heat penetration, so larger batches often need slightly longer cook time.