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Cups to Grams Calculator

Use this cups to grams calculator for common cooking and baking ingredients where ingredient density changes the conversion.

Live calculator

Cups to grams

Estimated grams120 g

1 cup(s) of all-purpose flour.

Grams per cup120 g

Ingredient density changes the cup-to-gram conversion.

Volume to weight
Volume1 cups
all-purpose flour120 g / cup
Estimated weight120 g

The selected ingredient supplies the density used in this conversion.

Why ingredient matters

Cups measure volume, while grams measure weight. Flour, sugar, butter, oats, rice, and liquids have different densities, so the calculator uses a common kitchen estimate for the selected ingredient.

Unit conversions are planning checks. For cooking, ingredient density and rounding can change the practical result.

Formula

Cups to grams formula

Grams = cups x grams per cup for the selected ingredient

Cups measure volume and grams measure weight, so ingredient density matters.

How to use

Steps

  1. Enter the number of cups.
  2. Choose the ingredient.
  3. Read the estimated grams.
  4. Use a kitchen scale for precise baking when possible.

Example

Sample calculation

1 cup flourAbout 120 g
1 cup sugarAbout 200 g
1 cup butterAbout 227 g

Calculator use

Best for

  • Converting units for cooking, travel, shipping, home projects, school work, recipes, and quick measurement checks.
  • Scaling a recipe or comparing metric and US customary measurements before cooking, shopping, or planning.

Before relying on it

Check first

  • Mixing volume and weight conversions when ingredient density changes the answer.
  • Using a rounded conversion for a task that needs precision, such as dosing, engineering, or formal lab work.
  • Scaling recipe time, pan size, salt, spices, or leavening exactly the same way as ingredient quantity.

Details

What to know before using the result

Conversion typeVolume to weight

Cups measure volume and grams measure mass, so the calculator uses an ingredient-specific grams-per-cup value.

Ingredient densityFlour is not sugar

One cup of all-purpose flour weighs much less than one cup of granulated sugar because the ingredients pack differently.

Baking precisionScale preferred

For exact baking, weigh ingredients directly. Scooping, sifting, and packing can change the weight of a measured cup.

Source notes

References used for this calculator

King Arthur BakingPublishes an ingredient weight chart used as a reference point for common baking conversions.

Benchmarks

How to read the result

Flour: About 120 g/cup.

Can vary with scooping and packing.

Sugar: About 200 g/cup.

Granulated sugar is denser than flour.

Liquid: About 240 g/cup.

A common estimate for water or milk.

Calculator accuracy

Methodology and assumptions

Formula, inputs, limitations and review record
Formula

Grams = cups x grams per cup for the selected ingredient

Inputs used

Cups, Ingredient

Limitations

Conversion pages use standard factors where possible. Cooking and recipe results are less exact when density, pan size, seasoning, or cooking method affects the outcome.

Review record

Catalog QA baseline on June 6, 2026. This date marks the catalog-wide automated and editorial QA baseline, not a tool-specific expert review.

Cite this page

Toolkit Shelf. Cups to Grams Calculator. https://toolkitshelf.com/tools/cups-to-grams-calculator

FAQ

Common questions

How many grams are in a cup?

It depends on the ingredient. One cup of flour is about 120 grams, while one cup of granulated sugar is about 200 grams.

Why do cups to grams vary?

Cups measure volume and grams measure weight. Different ingredients have different densities.

Is this accurate enough for baking?

It is useful for estimates, but a kitchen scale is better for precise baking.