Powdered Sugar (Sifted): US Cups & tbsp to Grams (g) & Ounces (oz) Conversion
Convert volumes of sifted powdered sugar (also known as confectioners' sugar or icing sugar) measured in US cups and tablespoons (tbsp) to its approximate weight in metric grams (g) and imperial/US ounces (oz).
US Volume (Sifted Powdered Sugar)
Grams (g) (approx.)
Ounces (oz) (approx.)
1 tablespoon (tbsp)
7-8 g
0.25-0.28 oz
2 tablespoons (1/8 cup)
14-16 g
0.49-0.56 oz
1/4 cup
28-30 g
0.99-1.06 oz
1/3 cup
37-40 g
1.31-1.41 oz
1/2 cup
55-60 g
1.94-2.12 oz
2/3 cup
73-80 g
2.57-2.82 oz
3/4 cup
83-90 g
2.93-3.17 oz
1 cup
110-120 g
3.88-4.23 oz
Important Considerations for Sifted Powdered Sugar:
Powdered sugar is very light and prone to clumping. **Sifting before measuring by volume is crucial** for these weights to be relevant and for smooth results in icings and frostings.
A common standard for **sifted** powdered sugar is around **110-120 grams per US cup** (approximately 3.88-4.23 ounces).
If measured **unsifted**, a cup of powdered sugar will weigh more (typically 120-130g or even higher if packed). See our separate chart for unsifted powdered sugar.
For the highest accuracy, especially in delicate recipes, measuring by weight with a kitchen scale is always recommended.