Convert Cups to Grams: Peanut Butter
Convert cups of peanut butter to grams with this complete reference table. 1 cup of peanut butter = 258g (USDA FoodData Central, spooned-and-leveled method). Use the table below for fractions from 1/8 cup up to 4 cups. For precision baking, weight measurements in grams are always more reliable than volume measurements in cups, because peanut butter density can vary by measuring technique.
Peanut Butter Cups to Grams Table
| Cups | Grams |
|---|---|
| 1/8 cup | 32.3g |
| 1/4 cup | 64.5g |
| 1/3 cup | 86g |
| 1/2 cup | 129g |
| 2/3 cup | 172g |
| 3/4 cup | 193.5g |
| 1 cup | 258g |
| 1 1/4 cups | 322.5g |
| 1 1/2 cups | 387g |
| 2 cups | 516g |
| 3 cups | 774g |
| 4 cups | 1032g |
Based on USDA FoodData Central data (1 US cup = 240ml = 16 tablespoons = 48 teaspoons). Note: Peanut butter density depends heavily on style. Creamy/smooth: 1 cup = 258g. Natural peanut butter (oil separated): similar weight but harder to measure consistently. Crunchy adds variability. 2 tablespoons peanut butter = ~32g.
About Peanut Butter Density
The density of peanut butter determines how much it weighs per unit of volume. At 1.075g/ml, 1 US cup (240ml) of peanut butter weighs 258g under USDA standard conditions.
Volume measurements can vary by ±10–20% depending on technique (sifted vs. spooned vs. scooped). For consistent baking results, use a kitchen scale with gram measurements whenever possible. The USDA standard (spooned-and-leveled) is the reference point for all values on this page.
Frequently Asked Questions
How many grams is 1 cup of peanut butter?
1 cup of peanut butter weighs 258 grams (USDA FoodData Central, spooned-and-leveled method, 1 US cup = 240ml).
How many grams is 1/2 cup of peanut butter?
1/2 cup of peanut butter weighs 129 grams.
How many grams is 1/4 cup of peanut butter?
1/4 cup of peanut butter weighs 65 grams.
Does measuring technique affect the weight of peanut butter?
Yes. Sifted peanut butter can weigh up to 20% less than packed or scooped. The USDA standard (spooned-and-leveled) of 258g/cup is the most reliable baseline.