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How many grams is one cup of peanut butter?

1 cup of peanut butter ≈ 258 g

Because one US cup of peanut butter weighs about 258 grams, one cup of it is roughly 258 grams. Peanut butter is dense and sticky — press it firmly into the cup to remove air pockets.

Recipes that list peanut butter in cups assume an average density. The figure above is a sensible typical value; if your recipe is sensitive, weigh on a kitchen scale — see our methodology.

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Peanut butter conversion chart

Peanut butter — cups to grams
Cups	Grams	Ounces	Tablespoons
⅛ cup	32.25 g	1.14 oz	2
¼ cup	64.5 g	2.28 oz	4
⅓ cup	86 g	3.03 oz	5.33
½ cup	129 g	4.55 oz	8
⅔ cup	172 g	6.07 oz	10.67
¾ cup	193.5 g	6.83 oz	12
1 cup	258 g	9.1 oz	16
1¼ cups	322.5 g	11.38 oz	20
1½ cups	387 g	13.65 oz	24
2 cups	516 g	18.2 oz	32
3 cups	774 g	27.3 oz	48

Other peanut butter conversions

100 g to cups 200 g to cups 250 g to cups 500 g to cups ¼ cup to grams ½ cup to grams 2 cups to grams

← Peanut butter converter All ingredients Cups to grams chart

* Conversion figures are typical average weights for one US customary cup (236.6 ml), based on the King Arthur Baking Ingredient Weight Chart and cross-referenced with the U.S. Department of Agriculture FoodData Central database. Actual weight varies with packing, brand and humidity — see our methodology.