Cups to Grams Calculator
Convert cups to grams by ingredient for baking recipes — flour, sugar, butter, milk, cocoa powder, oats, honey, and more.
Enter an amount greater than 0.
1 US cup of all-purpose flour equals
120 grams
- Tablespoons 16 tbsp
- Teaspoons 48 tsp
- Milliliters 240 ml
- Ounces 4.2 oz
Based on 1 US cup of all-purpose flour = 120g
Customize grams per cup
Enter a number of grams greater than 0.
Conversions are approximate and may vary by ingredient brand, packing, humidity, and measuring method. Spoons: 15 ml tablespoon, 5 ml teaspoon. Kitchen estimates have up to 10% volume rounding error; very small amounts use a threshold. See Methodology for the policy.
Popular ingredients
Tap any ingredient for its full conversion reference.
Why ingredient density matters
-
Cups measure volume
Cups measure how much space an ingredient takes up.
-
Grams measure weight
Grams are a unit of mass, so they tell you how heavy an ingredient is.
-
Density changes the result
A cup of flour, sugar, and butter fills the same volume, but each one has a different weight.
Same volume, different weight
1 cup all-purpose flour
= 120g
1 cup granulated sugar
= 198g
1 cup butter
= 227g
All measured using US cup / 240 ml
How to convert cups to grams
grams = cups × grams per cup
Example: 1 cup all-purpose flour × 120g per cup = 120 grams
Reverse formula
cups = grams ÷ grams per cup
Use the Grams to Cups tool to convert grams back into cups.
US cups, metric cups, and cup sizes
Learn about cup sizesThis calculator uses US cup / 240 ml by default, but you can switch cup types when needed.
- US cup / 240 ml
- US customary cup / 236.6 ml
- Metric cup / 250 ml
Frequently asked questions
How many grams are in a cup?
It depends on the ingredient. For example, 1 US cup of all-purpose flour is about 120g, while the same cup of sugar or butter weighs a different amount.
How many grams is 1 cup of all-purpose flour?
1 US cup of all-purpose flour is about 120g, based on US cup / 240 ml.
How many grams is 1 cup of granulated sugar?
1 US cup of granulated sugar is about 198g, based on US cup / 240 ml.
What cup size does this use?
This calculator uses the US cup (240 ml) by default. You can switch to a US customary cup (236.6 ml) or metric cup (250 ml) using the cup type selector.
Can I convert grams back to cups?
Yes, use the Grams to Cups tool to convert gram measurements back into cups.
Why do flour and sugar weigh differently?
Flour and sugar have different densities: sugar is heavier than flour by volume, so the same cup measurement gives a different weight for each ingredient.