How many grams in a cup of molasses?
1 cup of molasses weighs 337 g.1 tablespoon: 21 g1 teaspoon: 7 g
Weights are for molasses (liquid), in US customary cups.
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= 337 g
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Cups to grams
| Cups | Grams |
|---|---|
| ⅛ cup | 42 g |
| ¼ cup | 84 g |
| ⅓ cup | 112 g |
| ½ cup | 169 g |
| ⅔ cup | 225 g |
| ¾ cup | 253 g |
| 1 cup | 337 g |
| 1 ½ cups | 506 g |
| 2 cups | 674 g |
| 3 cups | 1,011 g |
Grams to cups
| Grams | US measure |
|---|---|
| 25 g | ≈ 1 tbsp + ½ tsp |
| 50 g | ≈ 2 tbsp + 1 tsp |
| 100 g | ≈ ¼ cup + 1 tbsp |
| 150 g | ≈ ¼ cup + 3 tbsp |
| 200 g | ≈ ½ cup + 1 tbsp |
| 250 g | ≈ ¾ cup |
| 500 g | ≈ 1 ½ cups |
| 1,000 g | ≈ 2 ¾ cups + 3 tbsp |
Rounded to amounts you can measure; ≈ marks a rounded answer.
Measuring molasses
These weights are for molasses (liquid). A different form, or a cup filled another way, weighs differently, so weigh it if the recipe gives grams.
The King Arthur Baking ingredient weight chart gives 340 g per cup. We use the USDA figure throughout.
Source
USDA FoodData Central, food 168820: “Molasses”, 1 cup = 337 g (USDA FoodData Central SR Legacy, April 2018). Other amounts are calculated with 1 cup = 16 tablespoons = 48 teaspoons. Data version 2026-10-17.1, reviewed 16 October 2026.
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