How do I measure 100g of powdered sugar (confectioners) in cups?

100 grams of powdered sugar (confectioners) equals approximately 0.83 cups, which is about 13.3 level tablespoons.

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Powdered Sugar (Confectioners) Grams to Cups

Finely pulverized white sugar blended with ~3% cornstarch to prevent clumping, perfect for frostings. Use the verified calculator and reference tables below to convert between grams, cups, ounces, and tablespoons.

Powdered Sugar (Confectioners) Converter

Calibrated to 120g per US Customary Cup (0.507 g/mL).

Ingredient

Weight in Grams (g)

Cup Standard

Presets:

Culinary Conversion Result

1 cup(1 cups exact)

Tablespoons16.01 tbsp

Teaspoons48 tsp

Dry Ounces4.23 oz

Fluid Ounces8 fl oz

Technique note: Sift before measuring if clumpy. Spoon gently into the measuring cup and level flat.

Verified standard: 1 US cup of Powdered Sugar (Confectioners) = 120 grams (USDA FoodData Central (FDC ID: 169656)).

Looking for complete Powdered Sugar (Confectioners) conversion charts?View Powdered Sugar (Confectioners) Guide→

1 US Customary Cup

120 grams

4.2 oz · 16 tablespoons

1 Metric Cup (AU/NZ)

126.8 grams

250 mL volume standard

Bulk Density

0.507 g/mL

At 20°C ambient room temp

Recommended Measuring Technique

Sift before measuring if clumpy. Spoon gently into the measuring cup and level flat.

Culinary Science Tip: Unsifted powdered sugar can vary between 110g and 130g per cup. Sift first for lump-free buttercream.

Standard source: USDA FoodData Central (FDC ID: 169656)

Powdered Sugar (Confectioners): Cup to Grams Conversion Table

Common recipe cup measurements converted into exact grams and ounces (US Customary 236.6 mL cup):

Cups	Grams	Ounces (oz)	Tablespoons
1/8 cup	15 g	0.53 oz	2.0 tbsp
1/4 cup	30 g	1.06 oz	4.0 tbsp
1/3 cup	40 g	1.41 oz	5.3 tbsp
1/2 cup	60 g	2.12 oz	8.0 tbsp
2/3 cup	80 g	2.82 oz	10.7 tbsp
3/4 cup	90 g	3.17 oz	12.0 tbsp
1 cup	120 g	4.23 oz	16.0 tbsp
1 1/4 cups	150 g	5.29 oz	20.0 tbsp
1 1/2 cups	180 g	6.35 oz	24.0 tbsp
2 cups	240 g	8.47 oz	32.0 tbsp
3 cups	360 g	12.70 oz	48.0 tbsp

Powdered Sugar (Confectioners): Grams to Cups Conversion Table

Metric recipe weights in grams converted into US Customary cups and level tablespoons:

Grams (Weight)	US Cups (Volume)	Exact Decimal	Tablespoons
10 g	1.3 tbsp	0.08 cups	1.3 tbsp
25 g	0.21 cups	0.21 cups	3.3 tbsp
50 g	0.42 cups	0.42 cups	6.7 tbsp
75 g	0.63 cups	0.63 cups	10 tbsp
100 g	0.83 cups	0.83 cups	13.3 tbsp
120 g	1 cup	1 cups	16 tbsp
125 g	1.04 cups	1.04 cups	16.7 tbsp
150 g	1.25 cups	1.25 cups	20 tbsp
175 g	1.46 cups	1.46 cups	23.3 tbsp
200 g	1.67 cups	1.67 cups	26.7 tbsp
225 g	1.88 cups	1.88 cups	30 tbsp
250 g	2.08 cups	2.08 cups	33.3 tbsp
300 g	2.5 cups	2.5 cups	40 tbsp
350 g	2.92 cups	2.92 cups	46.7 tbsp
400 g	3.33 cups	3.33 cups	53.3 tbsp
500 g	4.17 cups	4.17 cups	66.7 tbsp

Powdered Sugar (Confectioners) FAQs

Everything you need to know about kitchen weight and volume conversions

1 standard US Customary cup of powdered sugar (confectioners) weighs 120 grams (or 4.2 ounces). In a 250mL Metric cup, it weighs approximately 126.8 grams.