How many grams in a cup of peanut butter?
1 cup of peanut butter weighs 258 g.1 tablespoon: 16 g1 teaspoon: 5.4 g
Weights are for peanut butter (smooth), in US customary cups.
Convert any amount
= 258 g
Enter a number or fraction, such as 1/2 or 1 1/2.
Cups to grams
| Cups | Grams |
|---|---|
| ⅛ cup | 32 g |
| ¼ cup | 65 g |
| ⅓ cup | 86 g |
| ½ cup | 129 g |
| ⅔ cup | 172 g |
| ¾ cup | 194 g |
| 1 cup | 258 g |
| 1 ½ cups | 387 g |
| 2 cups | 516 g |
| 3 cups | 774 g |
Grams to cups
| Grams | US measure |
|---|---|
| 25 g | ≈ 1 ½ tbsp |
| 50 g | ≈ 3 tbsp + ½ tsp |
| 100 g | ≈ ⅜ cup |
| 150 g | ≈ ½ cup + 1 tbsp |
| 200 g | ≈ ¾ cup |
| 250 g | ≈ 1 cup |
| 500 g | 1 ¾ cups + 3 tbsp |
| 1,000 g | 3 ⅞ cups |
Rounded to amounts you can measure; ≈ marks a rounded answer.
Measuring peanut butter
These weights are for peanut butter (smooth). 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 270 g per cup. We use the USDA figure throughout.
Source
USDA FoodData Central, food 172470: “Peanut butter, smooth style, without salt”, 1 cup = 258 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.
Scaling a recipe?
Paste the ingredients into the recipe scaler to double, halve or resize every amount at once.