Gram to Cup

320 grams of granulated sugar to cups

320 g of granulated sugar is about 1.6 cups, which is roughly 1 cup + 5/8 or 25.6 tablespoons. That comes from 200 g per US cup. Granulated sugar barely compresses, so this number holds.

Measure320 g of granulated sugar
Cups1.6
Kitchen measure1 cup + 5/8
Tablespoons25.6
Grams per cup used200 g

Granulated sugar is the best behaved ingredient in the kitchen. Its crystals are heavy, uniform and free flowing, so a cup weighs 200 g whether you scoop it, pour it or spoon it. There is no packing method to argue about.

Result
0.83 cups
About 7/8 cup of all-purpose flour. 100 g is 3.53 oz by weight.
Assumes spoon-and-level. Scooped flour runs closer to 140 g a cup.

Questions

How many cups is 320 g of granulated sugar?
1.6 cups, or about 1 cup + 5/8. That is worked out at 200 g per US cup.
How many tablespoons is 320 g of granulated sugar?
About 25.6 tablespoons, since one US cup is 16 tablespoons. For small amounts tablespoons are usually the more accurate measure to work with.
Why does 320 g give a different number of cups for other ingredients?
Because cups measure volume and grams measure weight. 320 g of granulated sugar is 1.6 cups at 200 g per cup, while the same 320 g of a denser or lighter ingredient fills a different amount of space.

Other amounts of granulated sugar

240 g250 g260 g270 g280 g300 g340 g350 g375 g400 g

See all granulated sugar conversions or 320 g of every other ingredient.