Recipe Ingredient Scaler

What does this Recipe Ingredient Scaler do?

• Automatically recalculates each ingredient amount for your desired servings.
• Smartly parses quantities in decimals, fractions (1/2, 3 1/4), and whole numbers.
• Preserves ingredient order and text (e.g. “2 apples, sliced”).
• Shows both old and new amounts for quick comparison.
• Effortless copy—paste right into your next baking session.

How to use

1. Enter the original servings number—what the recipe said.
2. Enter how many servings you want to make.
3. Paste the recipe ingredient list (one line per item, with amounts and units).
4. Click Scale Ingredients—your new scaled ingredient list will appear, with clear formatting for easy copying.
5. Use Reset or Paste Example anytime to start over or see a worked sample.

Example

2 cups flour
1.5 tablespoons sugar
1/2 tsp salt
3 eggs
250 ml milk

3 cups flour
2.25 tablespoons sugar
0.75 tsp salt
4.5 eggs
375 ml milk

How are fractions and decimals handled?

• Fractions like 1/2 or 3 1/4 are parsed and scaled accurately.
• Results are rounded to two decimal places for clarity.
• If a result is a simple fraction (e.g., 0.5), it’s converted to 1/2 for readability.

Validation and Assumptions

• Only converts lines with a quantity at the start—others (like “pinch of salt”) are copied but not scaled.
• No units conversion (e.g., cups to ml)—keeps your recipe’s units as written.
• For large or small scaling, always sense-check for practical cooking limits.