How many grams in a cup of powdered sugar?

The short answer first, then a table for every common measure and how to fill your cup so the numbers match.

Quick answer

1 US cup of powdered sugar weighs about

120 g
Metric cup (250 mL)127 g
1 tablespoon7.5 g
1 teaspoon2.5 g

Cups of powdered sugar to grams

CupsUS cupMetric cup
¼ cup30 g32 g
⅓ cup40 g42 g
½ cup60 g63 g
⅔ cup80 g85 g
¾ cup90 g95 g
1 cup120 g127 g
2 cups240 g254 g

Grams of powdered sugar to cups

100 g0.833 cup
250 g2.08 cups
500 g4.17 cups

US cups.

Measure it right

  1. 1Fluff itStir it in the bag or jar so it isn’t packed.
  2. 2Spoon it inSpoon it into the cup until it overflows. Don’t press or tap.
  3. 3Level the topSweep a flat knife across the rim.

Unsifted. Sifted is about 100 g per cup.

Nutrition

PerCaloriesProteinCarbsFat
1 US cup4670 g120 g0 g
100 g3890 g99.8 g0 g
See calories and macros →

Common questions

Which cup size does my recipe use?

US recipes use 236.6 mL. Many Arab, UK and Australian recipes use a 250 mL metric cup, which holds about 127 g of powdered sugar.

Is it better to weigh powdered sugar?

Yes. A cup can hold more or less depending on how you fill it. A kitchen scale gives the same result every time.

Anything special about measuring powdered sugar?

Unsifted. Sifted is about 100 g per cup.

Source: USDA FoodData Central, SR Legacy #169656 (1 cup unsifted = 120 g). Values are approximate.