Where do these numbers come from?
- King Arthur BakingIngredient Weight Chart, grams per cup (spooned and levelled)retrieved Oct 23, 2026
- NISTSP 811: 1 US cup = 236.5882365 mL, 1 oz = 28.349523125 gcurrent edition
- NISTHandbook 44, weights and measurescurrent edition
Checked Oct 23, 2026. King Arthur lists 1 cup of all-purpose flour as 120 g. 100 g ÷ 120 g = 0.833 cup, which this converter shows as 0.833 cups and rounds to the nearest kitchen measure, 7/8 cup.
- Instant answersResults update as you type.
- Private by designRuns in your browser. Nothing is sent.
- Share, print or citeCopy a link with your numbers.
Grams per cup by sugar type
| Sugar | 1 cup | 1/2 cup | 1/3 cup | 1/4 cup | 1 tbsp |
|---|---|---|---|---|---|
| Granulated white sugar | 198 g | 99 g | 66 g | 50 g | 12.4 g |
| Brown sugar, packed | 213 g | 106 g | 71 g | 53 g | 13.3 g |
| Confectioners’ (powdered) sugar, unsifted | 113 g | 56 g | 38 g | 28 g | 7.1 g |
| Turbinado (raw) sugar | 180 g | 90 g | 60 g | 45 g | 11.2 g |
Why sugars weigh differently
Granulated sugar crystals pour and settle evenly, so a level cup is consistent at about 198 g. Brown sugar is measured packed (pressed into the cup until it holds its shape), which is why it comes in heavier at 213 g. Powdered sugar is fine and fluffy with cornstarch mixed in, so a cup holds only about 113 g, and sifting makes it lighter still.
Common conversions
100 g of granulated sugar is about 1/2 cup (0.51 cups). 200 g is about 1 cup. 1 kg (a typical bag size outside the US) is about 5.1 cups. A US 4 lb bag (1.81 kg) holds roughly 9 cups.
Swapping one sugar for another by volume changes sweetness and texture; swapping by weight is closer, but brown sugar adds moisture.
Source: King Arthur Baking ingredient weight chart. Cup = US cup (about 236.6 ml). Results are averages; weigh for precision.
Related
- Grams to cups converter
- Granulated sugar: grams to cups
- Cups to ounces
- Tablespoons in a stick of butter
Frequently asked questions
How many grams is 1 cup of sugar?
About 198 g of granulated white sugar.
How many grams is 1/2 cup of sugar?
About 99 g.
How many grams in a cup of brown sugar?
About 213 g, packed.
How many grams in a cup of powdered sugar?
About 113 g, unsifted.
How many cups is 100 g of sugar?
About 1/2 cup (0.51 cups).