Grams of Powdered Sugar to Cups Converter
This page converts grams of powdered (icing) sugar into cups, handy when a recipe is written in metric weights but you only own measuring cups. About 120 g of powdered (icing) sugar fills one cup, so you divide the weight by 120. Weighing is more accurate than scooping, so use these numbers as a guide.
How to convert grams to cups of powdered sugar
Divide the grams by 120. For example 300 g of powdered (icing) sugar is 300 ÷ 120 = 2.5 cups. To go the other way, multiply cups by 120: 2.5 × 120 = 300 g.
Grams to cups of powdered sugar chart
| Grams (g) | Cups (cup) |
|---|---|
| 10 g | 0.08333333 cup |
| 25 g | 0.2083333 cup |
| 50 g | 0.4166667 cup |
| 75 g | 0.625 cup |
| 100 g | 0.8333333 cup |
| 125 g | 1.041667 cup |
| 150 g | 1.25 cup |
| 175 g | 1.458333 cup |
| 200 g | 1.666667 cup |
| 225 g | 1.875 cup |
| 250 g | 2.083333 cup |
| 300 g | 2.5 cup |
| 350 g | 2.916667 cup |
| 400 g | 3.333333 cup |
| 500 g | 4.166667 cup |
| 600 g | 5 cup |
| 750 g | 6.25 cup |
| 1,000 g | 8.333333 cup |
Cups of powdered sugar to grams (reverse)
| Cups (cup) | Grams (g) |
|---|---|
| 1/8 cup | 15 g |
| 1/4 cup | 30 g |
| 1/3 cup | 40 g |
| 3/8 cup | 45 g |
| 1/2 cup | 60 g |
| 2/3 cup | 80 g |
| 3/4 cup | 90 g |
| 1 cup | 120 g |
| 1 1/2 cup | 180 g |
| 2 cup | 240 g |
| 2 1/2 cup | 300 g |
| 3 cup | 360 g |
| 4 cup | 480 g |
| 5 cup | 600 g |
| 6 cup | 720 g |
| 8 cup | 960 g |
| 10 cup | 1,200 g |
How much does a cup really weigh?
Density is the reason there is no single answer: a cup is a measure of space, not weight, so its weight depends on the ingredient. Powdered sugar is light and clumps easily; sifted, a cup weighs about 115 to 125 g. The figure of 120 g per cup used here is a common baking reference value; your own flour, humidity and scooping habit can move it a few percent either way.
Measure by spooning the ingredient lightly into the cup and leveling the top with a knife; never press it down unless the recipe says "packed". Scooping straight from the bag compacts dry ingredients and can add 20% or more. A digital kitchen scale removes the guesswork entirely, and it also means fewer dishes to wash.
Grams to cups of powdered sugar FAQ
How many grams are in one cup of powdered (icing) sugar?
One US cup of powdered (icing) sugar weighs about 120 g. That is a typical reference value, not an exact constant, because the weight changes with how the ingredient is packed.
What is the quickest way to convert cups of powdered (icing) sugar and grams in my head?
Divide by roughly 120: 300 g becomes about 2.5 cups, compared with the exact 2.5 cups.
Why do recipes disagree about the weight of a cup of powdered (icing) sugar?
Brands, sifting and scooping style change how much fits in the cup. Powdered sugar is light and clumps easily; sifted, a cup weighs about 115 to 125 g.
Should I weigh powdered (icing) sugar instead of using cups?
Yes, if you can. Weight is repeatable, so a recipe that calls for 240 g of powdered (icing) sugar will give the same result every time, while two cups can differ by 10 to 20% from one person to the next.