Grams to cups for brown sugar, packed

One US cup of brown sugar, packed weighs about 220 g, so 100 g is about 0.45 cups (1/2 cup). Press firmly into the cup. Real-world range: 200 to 220 g depending on packing pressure. The calculator and table below use this figure for any amount.

IngredientGrams

Result

0.45 cups

About 1/2 cup of brown sugar, packed. 100 g is 3.53 oz by weight.

Firmly packed. Loose brown sugar drops to about 200 g a cup.

Conversion table

Grams	Cups	Closest kitchen measure
25 g	0.11	1/8 cup
50 g	0.23	1/4 cup
75 g	0.34	1/3 cup
100 g	0.45	1/2 cup
125 g	0.57	5/8 cup
150 g	0.68	2/3 cup
200 g	0.91	7/8 cup
250 g	1.14	1 cup + 1/8
300 g	1.36	1 cup + 3/8
400 g	1.82	1 cup + 7/8
500 g	2.27	2 cups + 1/4

How to measure it

Brown sugar is the only common ingredient that recipes tell you to compress on purpose. The molasses coating makes it clump and trap air, so an unpacked cup can weigh 20 g less than a packed one. When a recipe says one cup of brown sugar, it almost always means firmly packed.

To pack it properly, press the sugar into the cup with the back of a spoon until it holds the cup's shape when turned out, then level the top. This page uses 220 g for that firmly packed cup. If you prefer to measure loose, use 200 g instead and note that your baked goods will be slightly less sweet and moist.

Light and dark brown sugar weigh the same per cup. The difference is molasses flavour, not density.

Density source: Published baking company ingredient charts (firmly packed). Method assumed: Firmly packed. Loose brown sugar drops to about 200 g a cup.