Recipe Scaling Calculator

How to use this tool

1. Put one ingredient on each line, beginning with a decimal or fraction amount.
2. Set the original and desired serving counts and scale the list.

Things to know

• Supports decimal, fraction and mixed-number amounts. Cooking time and indivisible ingredient rounding need your judgment.
• At most 500 ingredient lines and 20,000 characters per line. Amounts: 120 characters, zero or magnitudes from 10^-100 to 10^100. Full original/scaled ingredient values are included in the CSV.
• Use no more than 200,000 characters across the input and settings.
• Bounded decimal inputs mean at most 120 characters, zero or a magnitude from 10^-100 to 10^100. Arithmetic uses 40-digit precision; exponent suffixes are checked before parsing.