UTILS.
Private by default
📖

Recipe Scaler / Multiplier

Scale any recipe up or down by a factor or by servings — quantities re-render as clean fractions.

Your files stay on this device

Files are processed in your browser, never uploaded. The site downloads code and assets to run the tools. No accounts or trackers.

Use Download to save this tool as one HTML file for offline use.

Privacy →

      
      
About this tool
Recipe Scaler / Multiplier is a free, in-browser tool that resizes a whole ingredient list at once. Paste your ingredients one per line, choose a multiplier or a servings change, and every leading quantity is rescaled while the rest of each line stays exactly as written. Nothing is uploaded — the parsing and math run entirely on your device.
Each line's leading quantity is parsed into a decimal: whole numbers, decimals like 1.5, ASCII fractions such as "3/4" or mixed numbers like "1 1/2", and unicode fractions (½ ¼ ¾ ⅓ ⅔ ⅛ ⅜ ⅝ ⅞) are all recognized. The value is multiplied by the scale factor — for servings mode the factor is desired ÷ original — then rounded to the nearest one-eighth and rendered back as a tidy whole number or fraction, so "1 1/2 cups flour" doubled becomes "3 cups flour".
Lines with no leading number (like "salt to taste" or a section header) pass through untouched. Use the copy button to grab the rescaled list. The tool is fully deterministic: the same input and factor always produce the same output.

        
Frequently asked questions
What quantity formats does it understand?
Whole numbers, decimals (1.5), ASCII fractions and mixed numbers (3/4, 1 1/2), and unicode fractions (½, ¼, ¾, ⅓, ⅔, ⅛, ⅜, ⅝, ⅞). Only the quantity at the very start of a line is scaled; the unit and ingredient text are left unchanged.
How does servings mode compute the factor?
It divides the desired servings by the original servings. Going from 4 to 6 servings gives a factor of 1.5; going from 8 to 4 gives 0.5, which halves every quantity.
Why are results shown as eighths?
Scaled amounts are rounded to the nearest 1/8 and written as a whole number or a common kitchen fraction (like 2 1/4), because measuring spoons and cups work in those steps. Very small amounts fall back to a short decimal instead of rounding to zero.
Is my recipe uploaded anywhere?
No. The ingredient text is parsed and rescaled entirely in your browser — nothing is sent to a server, and the tool works offline.

        
More tools
Turkey Thaw & Roast Time CalculatorPerfect Boiled Egg TimerBrine Salt CalculatorFresh ↔ Dried Herb ConverterCold Brew Coffee CalculatorCups to Grams Ingredient ConverterAll 19 Cooking & Kitchen tools →