Do not mistake weight ounces with volume ounces when measuring powdered sugar. Know exactly how much you are purchasing. Everyone is aware that one cup equals eight ounces, right? In actuality, when measuring components for a recipe, 1 cup does not necessarily correspond to 8 ounces.
We know that 1 cup of water weighs 8 ounces, but because honey is more viscous than water, 1 cup of honey weighs 12 ounces. Powdered sugar directly from the box or plastic bag weighs 4 1/2 ounces per cup; therefore, a 1-pound box (or 16 ounces) provides approximately 3 1/2 cups of powdered sugar. If a recipe asks for powdered sugar, 4 ounces of powdered sugar will equal 1 dry measuring cup.
Powdered sugar becomes lighter and fluffier when sifted, so it occupies more space in the cup. 
How many cups of sugar are contained in a one-pound box?
Cups of Sugar in a Pound One pound of granulated sugar is about equivalent to two cups.
How much powdered sugar is 1 box?
Powdered sugar directly from the box or plastic bag weighs 4 1/2 ounces per cup; therefore, a 1-pound box (or 16 ounces) provides approximately 3 1/2 cups of powdered sugar. If a recipe asks for powdered sugar, 4 ounces of powdered sugar will equal 1 dry measuring cup.
How many grams does 1 cup of powdered sugar weigh?
SUGARS & LIQUID SWEETENERS –
| Granulated Sugar Light Brown Sugar Dark Brown Sugar | 1 cup = 200 g |
|---|---|
| ½ cup = 100 g | |
| 1⁄3 cup = 67 g | |
| ¼ cup = 50 g | |
| 2 Tbsp = 25 g | |
| Superfine sugar Caster sugar | 1 cup = 225 g |
| ½ cup = 115 g | |
| 1⁄3 cup = 70 g | |
| ¼ cup = 60 g | |
| 2 Tbsp = 30 g | |
| Icing sugar (Powdered sugar or Confectioners’ sugar) | 1 cup = 130 g |
| ½ cup = 65 g | |
| 1⁄3 cup = 45 g | |
| ¼ cup = 32 g | |
| Coconut palm sugar | 1 cup = 170 g |
| Honey | 1 cup = 300 g |
|---|---|
| Molasses | 1 cup = 260 g |
| Corn syrup | 1 cup = 325 g |
Does 250ml equal 1 cup?
Cups of sugar and flour
250ml is about equal to one cup.