120 Grams to Cups
120 grams is 1 cup of all-purpose flour, ⅝ cup of granulated sugar, or ½ cup of butter — grams measure weight, cups measure volume, so the answer always depends on the ingredient's density. Find yours in the table below; every density is verified against King Arthur and USDA data.
120 g is also 4.2 oz by weight. For water and thin liquids, 120 g is simply 120 ml.
120 grams to cups, by ingredient
| Ingredient | Cups | Decimal | Measure it as |
|---|---|---|---|
| all-purpose flour | 1 cup | 1 | 1 cup |
| granulated sugar | ⅝ cup | 0.6 | 10 tbsp |
| powdered sugar | 1 cup | 1 | 1 cup |
| brown sugar (packed) | ⅝ cup | 0.56 | 9 tbsp |
| honey | ⅓ cup | 0.35 | 6 tbsp |
| butter | ½ cup | 0.53 | 8 tbsp |
| milk (whole) | ½ cup | 0.49 | 8 tbsp |
| uncooked white rice | ⅔ cup | 0.65 | 10 tbsp |
| rolled oats | 1 ⅓ cups | 1.35 | 1 cup + 6 tbsp |
| chocolate chips | ⅔ cup | 0.71 | 11 tbsp |
| cocoa powder | 1 ⅜ cups | 1.43 | 1 cup + 7 tbsp |
| water | ½ cup | 0.5 | 8 tbsp |
Why the ingredient changes the answer
A US cup is a fixed volume (about 237 ml), but a cup of flour weighs 120 g while a cup of honey weighs 340 g — density is the whole game. That's also why there's no single "grams to cups" conversion factor, and why our converter asks for the ingredient first.
Convert another amount
250 g All-purpose flour = 2 ⅛ cups
Exactly 2.08 cups — or measure 2 cups + 1 tbsp.
Nearby amounts
- 75 grams to cups
- 80 grams to cups
- 100 grams to cups
- 113 grams to cups
- 125 grams to cups
- 150 grams to cups
- 175 grams to cups
- 200 grams to cups
Ingredient-specific charts: flour · sugar · butter · all ingredients · Reverse: cups to grams
Data verified 2026-08-20 · Methodology & sources