Food & Cooking

Instant, private, and free

Recipe Scaler.

Scale an ingredient amount from one serving count to another without assuming ingredient density or units.

On-device calculationNo signup
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Set your values

Results update as you type.

Scale factor: 2.5

Scale factor

2.5000
Scaled ingredient amount: 625

Scaled ingredient amount

625.0000

Results update automatically as you type. All assumptions are explicit inputs; no local pricing, ingredient density, or serving-size defaults are inferred.

Use Cases

Adjust recipes for different guest counts

When you need to cook for more or fewer people, this scaler helps you adjust each ingredient proportionally, ensuring your dish turns out right.

Example: Original recipe serves 4, you need 6 servings. Scale 2 cups of flour to 3 cups.

Convert a recipe from one serving size to another

If you want to make a smaller batch for meal prep or a larger batch for a party, this tool quickly recalculates ingredient amounts.

Example: Halve a recipe that serves 8 to serve 4, scaling 1.5 teaspoons of salt to 0.75 teaspoons.

Frequently Asked Questions

How does the Recipe Scaler work?
The Recipe Scaler uses a simple serving-ratio formula. You input the original number of servings and the new number of servings, along with the ingredient amount. The calculator multiplies the original amount by the ratio of new servings to original servings to give you the scaled amount.
Can I scale multiple ingredients at once?
No, this calculator scales one ingredient amount at a time. For each ingredient, you'll need to enter its original amount and the serving numbers to get the scaled amount. This keeps the calculation transparent and easy to verify.
What units can I use for the ingredient amount?
The calculator accepts any unit you choose, such as cups, grams, or teaspoons. Just enter the numeric amount and the unit label (if provided) to get the scaled result in the same unit.

Tips & Common Mistakes

Tips

  • Always double-check your original and new serving numbers to ensure the ratio is correct.
  • For best results, use the same unit for the ingredient amount and the scaled result; the calculator maintains the unit.
  • When scaling, consider that some ingredients (like spices) may not scale perfectly linearly; adjust to taste.
  • Use the transparent formula to manually verify the calculation if needed.

Common Mistakes to Avoid

  • Entering the original and new serving numbers in the wrong order, which reverses the scaling direction.
  • Forgetting to convert units before scaling, leading to incorrect amounts if you mix units.
  • Assuming the scaled amount is exact for all ingredients, but some may need slight adjustments for texture or flavor.

Last updated: August 13, 2026