Cups to Grams / Ingredients / Powdered sugar
1 Cup Powdered Sugar in Grams (120 g)
1 cup of unsifted powdered sugar weighs 120 g (4.23 oz), according to USDA FoodData Central. That makes 1 tablespoon 7.5 g and 1 teaspoon 2.5 g. Other cup weights USDA lists: sifted, 100 g.
Powdered sugar1 cup, unsifted
120g
- Ounces
- 4.23 oz
- 1 tbsp
- 7.5 g
- 1 tsp
- 2.5 g
- Source
- USDA FDC #169656
Convert another amount of powdered sugar in the calculator, including grams back to cups.
Powdered sugar cups to grams chart
| Amount | Grams | Ounces |
|---|---|---|
| 1/8 cup | 15 g | 0.53 oz |
| 1/4 cup | 30 g | 1.06 oz |
| 1/3 cup | 40 g | 1.41 oz |
| 1/2 cup | 60 g | 2.12 oz |
| 2/3 cup | 80 g | 2.82 oz |
| 3/4 cup | 90 g | 3.17 oz |
| 1 cup | 120 g | 4.23 oz |
| 1 1/2 cups | 180 g | 6.35 oz |
| 2 cups | 240 g | 8.47 oz |
| 3 cups | 360 g | 12.7 oz |
| 1 tbsp | 7.5 g | 0.26 oz |
| 2 tbsp | 15 g | 0.53 oz |
| 1 tsp | 2.5 g | 0.09 oz |
| 1/2 tsp | 1.3 g | 0.04 oz |
Each row is USDA’s 1-cup weight (120 g) times the amount. A tablespoon is 1/16 cup and a teaspoon is 1/48 cup, so 1 tbsp = 120 ÷ 16 = 7.5 g. Ounces are grams ÷ 28.3495. USDA also weighed small measures on their own (1 tbsp unsifted: 8 g; 1 tsp: 2.5 g). Those can differ from the cup-based rows by a few tenths of a gram because each weight is rounded.
Powdered sugar grams to cups
| Weight | Cups | Closest measure |
|---|---|---|
| 25 g | 0.21 | 3 tbsp + 1 tsp |
| 50 g | 0.42 | 1/3 cup + 1 tbsp + 1 tsp |
| 100 g | 0.83 | 3/4 cup + 1 tbsp + 1 tsp |
| 200 g | 1.67 | 1 2/3 cups |
| 250 g | 2.08 | 2 cups + 1 tbsp + 1 tsp |
| 500 g | 4.17 | 4 cups + 2 tbsp + 2 tsp |
Cups = grams ÷ 120. The last column rounds to the nearest 1/4 teaspoon using a standard set of cups and spoons.
What USDA lists for powdered sugar
| USDA portion | Grams | Ounces |
|---|---|---|
| 1 cup unsifted | 120 g | 4.23 oz |
| 1 cup sifted | 100 g | 3.53 oz |
| 1 tbsp unsifted | 8 g | 0.28 oz |
| 1 tsp | 2.5 g | 0.09 oz |
Source: USDA FoodData Central, SR Legacy, FDC ID 169656: “Sugars, powdered”, published 4/1/2019. Portion used for this page: “1 cup unsifted” = 120 g. Cups to spoons: USDA ARS measure equivalents (1 cup = 16 tbsp = 48 tsp).
Measuring powdered sugar by the cup
Brown sugar is usually measured packed, and powdered sugar weighs less after sifting, so check which way your recipe means. When in doubt, weigh it.