How Many Grams in a Cup of Brown Sugar?
Updated September 25, 2026
1 US cup of brown sugar
213g
7.5 oz, firmly packed into the cup
- 1/2 cup
- 107 g
- 1/4 cup
- 53 g
- 1 tablespoon
- 13 g
- 1 teaspoon
- 4.4 g
One cup of packed brown sugar, light or dark, weighs about 213 grams (7½ ounces). American recipes assume brown sugar is firmly packed unless they say otherwise, and packing makes a big difference: loosely spooned brown sugar weighs much less per cup.
Brown Sugar converter
Fractions work too, for example 1/3 or 1 1/2.
Cups to grams
| US cups | Grams | Ounces |
|---|---|---|
| 1/8 cup | 27 g | 0.94 oz |
| 1/4 cup | 53 g | 1.9 oz |
| 1/3 cup | 71 g | 2.5 oz |
| 1/2 cup | 107 g | 3.8 oz |
| 2/3 cup | 142 g | 5 oz |
| 3/4 cup | 160 g | 5.6 oz |
| 1 cup | 213 g | 7.5 oz |
| 1 1/2 cups | 320 g | 11.3 oz |
| 2 cups | 426 g | 15 oz |
| 3 cups | 639 g | 22.5 oz |
| 4 cups | 852 g | 30.1 oz |
Grams to cups
| Grams | Cups (decimal) | With measuring cups and spoons |
|---|---|---|
| 25 g | 0.12 | 1 tbsp + 2 1/2 tsp |
| 50 g | 0.23 | 3 tbsp + 2 1/2 tsp |
| 100 g | 0.47 | 1/3 cup + 2 tbsp + 1/2 tsp |
| 150 g | 0.7 | 2/3 cup + 2 tsp |
| 200 g | 0.94 | 3/4 cup + 3 tbsp |
| 250 g | 1.17 | 1 cup + 2 tbsp + 2 1/2 tsp |
| 300 g | 1.41 | 1 1/3 cups + 1 tbsp + 1/2 tsp |
| 400 g | 1.88 | 1 3/4 cups + 2 tbsp |
| 500 g | 2.35 | 2 1/3 cups + 1/2 tsp |
| 1,000 g | 4.69 | 4 2/3 cups + 1 1/2 tsp |
Light vs. dark brown sugar
Light and dark brown sugar weigh about the same per cup. Dark brown sugar contains more molasses, which gives baked goods a deeper, more caramel-like flavor and a slightly moister texture.
Because of its molasses and moisture, a packed cup of brown sugar weighs more than a cup of granulated sugar: 213 g versus 198 g.
Tips for measuring brown sugar
- Press brown sugar into a dry measuring cup firmly enough that it holds the cup's shape when you turn it out.
- Brown sugar hardens as it loses moisture. Keep it in an airtight container; a terra-cotta sugar saver or a slice of bread in the container helps keep it soft.
- To soften hardened brown sugar quickly, microwave it in a covered bowl with a damp paper towel for 20 to 30 seconds, then break it up.
- Out of brown sugar? Stirring about 1 tablespoon of molasses into 1 cup of granulated sugar makes a good stand-in for light brown sugar; use 2 tablespoons for dark.
Frequently asked questions
Is brown sugar heavier than white sugar?
Packed, yes: about 213 g per cup versus 198 g for granulated sugar. If you swap one for the other by weight, the sweetness is similar, but brown sugar adds moisture and molasses flavor, which makes cookies softer and chewier.
How many grams are in 1/2 cup of brown sugar?
Half a cup of brown sugar weighs about 107 grams (3.8 ounces).
How many cups is 100 grams of brown sugar?
100 g of brown sugar is about 0.47 US cups, which you can measure as 1/3 cup + 2 tbsp + 1/2 tsp.
How many grams are in a tablespoon of brown sugar?
One tablespoon weighs about 13 g, and one teaspoon about 4.4 g.
More cups-to-grams conversions
See every ingredient side by side in the baking ingredient weight chart, or convert cups, spoons and milliliters with the kitchen unit converter.
Sources and method
The cup weight on this page comes from King Arthur Baking's Ingredient Weight Chart, which lists brown sugar as 1 cup, packed (light or dark) = 7 1/2 oz = 213 g. All other figures are calculated from that weight using a US customary cup (236.6 mL), 16 tablespoons per cup and 3 teaspoons per tablespoon. Using a 250 mL metric cup? Multiply the grams by about 1.06. Brand, humidity and measuring technique can shift real-world weights by a few percent, so weigh when precision matters.