Recipe Scaler & Converter
Scale recipe ingredients by serving size and convert between Metric grams/milliliters and US cups, ounces, and spoons.
| Ingredient | Original Amount | Unit | Type (for Density) |
|---|
About this tool
How to use it
- Enter your starting yield (original servings) and target yield (desired servings) to calculate the scaling multiplier.
- Add or modify ingredients with quantity, unit (cups, grams, oz, tbsp, tsp), and optional ingredient classification for density conversion.
- Choose your target unit preference: keep original units, convert all to Metric (grams/ml), or convert all to US Customary (cups/tbsp).
- Click 'Scale Recipe' to view scaled ingredient quantities formatted in clear culinary fractions (e.g., 1 1/2 cups) and export your scaled grocery list.
Why it matters
['Scaling baking recipes by mental math frequently causes arithmetic errors in chemical leaveners (baking powder/soda) or salt proportions.', 'European recipes written in grams require volume conversions for American home bakers who only own measuring cups and spoons.', 'Converting volume to mass based on specific ingredient densities (like 120g per cup of flour vs 200g per cup of sugar) ensures consistent culinary results.']
When to use it
['Doubling or tripling holiday dinner recipes for large family gatherings.', 'Scaling down multi-serving entrees to single or two-person portions without food waste.', 'Translating international culinary blogs and cookbooks between metric grams/milliliters and imperial cups/fluid ounces.']
Common questions
Why does 1 cup of flour weigh less than 1 cup of sugar?
Flour and sugar have significantly different bulk densities. Aerated all-purpose flour weighs approximately 120 grams per US cup, while granulated sugar is denser and weighs approximately 200 grams per US cup. This converter uses ingredient-specific densities.
How does the tool handle fractional measurements?
The scaler automatically rounds small fractional quantities to practical culinary increments (1/8, 1/4, 1/3, 1/2, 2/3, 3/4) so you do not have to measure awkward decimals like 0.37 cups.
Can I copy the scaled ingredients for grocery shopping?
Yes. Click 'Copy Grocery List' to instantly copy formatted bullet points with ingredient names and scaled amounts directly into your notes or shopping app.
Does this tool work offline?
Yes. All mathematical scaling and unit conversions run 100% locally in your web browser with zero server calls and zero data collection.