How Many Grams in 1 Cups of Powdered Sugar?
Precise conversion for baking and cooking.
The exact weight is
120
grams
1 cups of powdered sugar = 120g
· Based on 120g per cup
🔢 Quick Calculator
cups of powdered sugar =
120g
Powdered Sugar — All Cup-to-Gram Conversions
| Cups | Grams | Ounces |
|---|---|---|
| ⅛ cups | 15g | 0.5 oz |
| ¼ cups | 30g | 1.1 oz |
| ⅓ cups | 40g | 1.4 oz |
| ½ cups | 60g | 2.1 oz |
| ⅔ cups | 80g | 2.8 oz |
| ¾ cups | 90g | 3.2 oz |
| 1 cup | 120g | 4.2 oz |
| 1¼ cups | 150g | 5.3 oz |
| 1½ cups | 180g | 6.3 oz |
| 1¾ cups | 210g | 7.4 oz |
| 2 cups | 240g | 8.5 oz |
| 2½ cups | 300g | 10.6 oz |
| 3 cups | 360g | 12.7 oz |
| 4 cups | 480g | 16.9 oz |
| 5 cups | 600g | 21.2 oz |
💡 Pro Tip: Sift before measuring — powdered sugar clumps easily and traps air.
Why Weigh Powdered Sugar in Grams?
When a recipe calls for 1 cups of powdered sugar, using a kitchen scale to measure exactly 120 grams will give you far more consistent results than volume measurement alone. This is because powdered sugar can be packed, sifted, or scooped differently each time, leading to weight variations of up to 20%.
How to Measure Powdered Sugar by Weight
Place your mixing bowl on a digital kitchen scale and press "tare" to zero it out. Then add powdered sugar until the scale reads 120g. This method is faster than measuring cups and eliminates the guesswork entirely.
Also Known As
Powdered Sugar is sometimes referred to as confectioners sugar, icing sugar, 10x sugar. The same conversion of 120g per cup applies regardless of the name used.
Frequently Asked Questions
1 cup of powdered sugar weighs exactly 120 grams or approximately 4.2 ounces. This is based on a standard US cup measurement of 120 grams per cup.
Yes, the density of powdered sugar (120g per cup) is consistent across brands. Minor variations of ±5% may occur depending on grind, moisture, and how the ingredient is packed into the cup — which is exactly why weighing with a scale is recommended.
If measuring by cups, whether you sift can change the weight by 10-20%. When measuring by weight (120g), sifting doesn't affect accuracy since you're targeting an exact gram amount regardless of volume.
This conversion uses the US standard cup (236.6ml, commonly rounded to 240ml). If you're using a metric cup (250ml), the weight will be slightly higher. For perfect accuracy, always use a kitchen scale.