420g Powdered Sugar in Cups
420 grams of powdered sugar is 3½ cups — 120g per US cup. Large powdered-sugar weights are for layer-cake frostings and royal icing, where the sugar-to-fat ratio decides whether the icing sets or slumps.
How many cups is 420g of powdered sugar?
420 grams of powdered sugar equals:
Measuring by hand? That is 3 cups + 8 tablespoons. It is about 84% of a 500 g bag of powdered sugar.
Powdered sugar clumps and compacts in the bag. Sift or whisk it first, then spoon it into the cup — do not tap the cup down.
Grams to Cups Converter
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Applies to this page only — the database value (120g per US cup) is unchanged.
420 grams of Powdered Sugar is about 3½ cups, using a 236.588 millilitre cup at 120 grams per cup.
420g of powdered sugar vs other ingredients
Grams measure weight and cups measure volume, so the same 420 grams fills a different amount of cup for every ingredient:
| Ingredient | 420g in cups | g per cup |
|---|---|---|
| Powdered Sugar | 3½ cups | 120 |
| All-Purpose Flour | 3⅜ cups | 125 |
| Granulated Sugar | 2⅛ cups | 200 |
| Butter | 1⅞ cups | 227 |
See all 420g conversions on the 420 grams to cups chart.
Nearby powdered sugar amounts
| Grams of powdered sugar | Cups | Tablespoons |
|---|---|---|
| 375g | 3⅛ cups | 50 tbsp |
| 390g | 3¼ cups | 52 tbsp |
| 400g | 3⅓ cups | 53 tbsp |
| 410g | 3⅜ cups | 55 tbsp |
| 450g | 3¾ cups | 60 tbsp |
| 454g | 3¾ cups | 61 tbsp |
| 480g | 4 cups | 64 tbsp |
| 500g | 4⅛ cups | 67 tbsp |
Full ladder on the powdered sugar grams to cups chart.
Frequently Asked Questions
420 grams of powdered sugar is 3½ cups. In kitchen measures that is 3 cups + 8 tablespoons, worked out from 120 grams per US cup.
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