acalculator

How do I convert cups to grams?

Type a value and pick the ingredient and the other one updates as you type.

Your numbers

Grams (g)
125

1 cup = 125 g.

Grams (g): 125. 1 cup = 125 g.

Grams (g) by cups (cup)

How to calculate

Converts cups to grams and back for a baking ingredient, with USDA weights for one level US cup.

Example with the default inputs (Cups (cup) 1, Ingredient All-purpose flour (125 g per cup)): 1 cup = 125 g.

Formula: grams = cups × grams per cup, where grams per cup depends on the ingredient (all-purpose flour: 125 g).

  • Grams per cup are USDA FoodData Central (SR Legacy) portion weights for one level US cup (8 US fluid ounces): all-purpose flour 125 g (FDC 168894), granulated sugar 200 g (FDC 169655), brown sugar, packed 220 g (FDC 168833), powdered sugar, unsifted 120 g (FDC 169656).
  • How you fill the cup changes the weight: packed, sifted, or scooped flour can differ by 20% or more.
  • The answer shows at most 6 decimal places; the calculation keeps full precision.

Machine-readable copies: Markdown, JSON.

Worked examples

Each example is checked against the calculator on every build.

  1. Cups (cup) 1, Ingredient All-purpose flour (125 g per cup) gives Grams (g) 125.Source: USDA FoodData Central SR Legacy 168894: 1 cup = 125 g
  2. Cups (cup) 2, Ingredient Granulated sugar (200 g per cup) gives Grams (g) 400.Source: USDA FoodData Central SR Legacy 169655: 1 cup = 200 g

Other questions people ask

How many grams are in a cup?

It depends on the ingredient, because a cup measures volume and a gram measures weight. One level US cup weighs: all-purpose flour 125 g, granulated sugar 200 g, brown sugar, packed 220 g, powdered sugar, unsifted 120 g (USDA).

How do I convert cups to grams?

grams = cups × grams per cup, where grams per cup depends on the ingredient (all-purpose flour: 125 g). For example, 2 cups of all-purpose flour is 2 × 125 = 250 g.

Why does my cup of flour weigh a different amount?

Flour packs down. Spooned and levelled flour weighs about 125 g a cup, but a scooped or packed cup can weigh 20% more. For baking, weighing is more accurate than measuring by volume.