Recipe quantity converter
Adjust the recipe scale first, then add one line per ingredient. You can duplicate lines for variations and save frequent ingredients as favorites.
Mark ingredients as favorites to pin them here.
Run Convert to keep recent ingredient conversions in this session.
Tips & safety
- Density values are based on room-temperature references; pack ingredients the way the recipe expects.
- For medical, allergy, or commercial use, rely on product labels or laboratory measurements instead of estimates.
- The converter stores history and favorite ingredients locally in your browser.
How to convert cups to grams reliably
Choose the ingredient before converting cups, spoons, or milliliters to grams because flour, sugar, butter, and liquids have different densities. Use the recipe scale first when resizing the whole recipe.
How it works
Cups measure volume, while grams measure weight. The converter uses the selected ingredient density, cup system, and recipe multiplier to estimate the weight for each line. A packed ingredient and a sifted ingredient can produce different weights even when the volume looks the same.
When to use
Use this page when adapting a home recipe, converting a US recipe to metric kitchen weights, or scaling ingredient lines before cooking. For nutrition labels, allergen controls, commercial production, or medical diets, rely on package data or weighed measurements.
Common mistakes to avoid
- Changing the ingredient after copying the gram result.
- Using a US cup and metric cup interchangeably without checking the setting.
- Treating packed brown sugar, sifted flour, and level flour as the same density.
- Scaling the recipe after converting only one ingredient line.
Interpretation and worked example
If a recipe is doubled, set the scale to 2x first, then convert each ingredient. One cup of flour and one cup of butter will not become the same number of grams because their densities are different.
See also
FAQ
Which units can I convert?
The tool covers cups, tablespoons, teaspoons, fluid ounces, pints, milliliters, liters, grams, kilograms, ounces, and pounds. Switch the unit system to prioritize US or metric defaults without losing cross-unit conversions.
How does the recipe scale slider work?
Every ingredient line is multiplied by the scale you choose before converting. For example, a 2× scale turns 1 cup of sugar into 2 cups and converts that amount to the target unit.
Why does one cup have different gram values?
Cups measure volume, while grams measure weight. The gram value changes by ingredient density and by how tightly ingredients such as flour or brown sugar are packed.
Should I use a US cup or a metric cup?
Use the cup size expected by the recipe source. US recipes often use 236.6 mL cups, while many metric references use 250 mL cups, so the gram result changes with the setting.
How should I handle packed or sifted ingredients?
Select the closest ingredient option and treat the result as a kitchen estimate. For sensitive recipes, weigh the ingredient after preparing it the way the recipe describes.
Cups, grams, and recipe scaling notes
Ingredient density
The ingredient is the main assumption. Dense ingredients such as butter convert to more grams per cup than lighter ingredients such as flour, and packing changes the estimate.
Recipe scaling
Set the recipe scale before converting ingredient lines. The page multiplies the amount first, then converts the scaled volume or weight to the target unit.
Display rounding
Results are rounded for kitchen readability. Keep a kitchen scale nearby when a recipe depends on precise hydration, small spice amounts, or commercial nutrition data.
When to use a label instead
Use product labels, lab measurements, or direct weighing for allergens, medical diets, packaged nutrition calculations, and regulated food production.