Cups to Grams: Peanut Butter Converter

Convert peanut butter between cups and grams using its measured density of about 256 g per cup. The widget below is pre-set to this exact conversion and recalculates as you type.

Converted amount

256g

1 cup of peanut butter = 256 g

Exact weight

256 g

Ounces

9.03 oz

Milliliters

237 ml

Kitchen measure

1 cup

1 cup of peanut butter weighs about 256 g. Densities are averages — sifted flour is lighter, packed sugar is heavier. Fractions such as 1 1/2 or 3/4 are supported.

Peanut Butter conversion chart

Cups to Grams, rounded for the kitchen.

CupsGramsGrams
1/4 cup64 g64 g
1/3 cup84.5 g84.48 g
1/2 cup128 g128 g
3/4 cup192 g192 g
1 cup256 g256 g
1 1/2 cup384 g384 g
2 cup512 g512 g
3 cup768 g768 g
4 cup1024 g1024 g

How to convert cups to grams for peanut butter

Ingredient conversion is a two-step calculation. First, cups are turned into grams using peanut butter's density of about 256 g per cup, or its exact weight factor for cups. Then those grams are expressed in grams. Because every conversion passes through weight, the result is consistent whether you start from cups, tablespoons, milliliters, or ounces.

Density is the reason a universal "cups to grams" number does not exist. A cup of sifted all-purpose flour is about 120 g, while a cup of granulated sugar is about 200 g and a cup of honey about 340 g. Using one ingredient's density for another is the most common cause of dry cakes and dense breads, so always confirm the ingredient selected above matches what is in your bowl.

For the most repeatable results, weigh peanut butter on a digital scale instead of relying on volume. If you are scaling a whole recipe, use the recipe scaler to multiply every ingredient at once, then verify individual amounts with this converter.

Frequently asked questions

How many grams is a cup of peanut butter?

One US cup of peanut butter weighs about 256 grams (9.03 oz). That density is what this converter uses, so volume and weight results stay consistent for every measurement on the page.

How many grams is 1 cup of peanut butter?

1 cup of peanut butter equals about 256 g (256 g), or 256 grams. Use the converter above for any other amount.

Why does peanut butter convert differently from other ingredients?

Weight-to-volume conversions depend on ingredient density. A cup of peanut butter weighs about 256 g, while a cup of granulated sugar weighs about 200 g and a cup of water 237 g. That is why a single "cups to grams" number cannot apply to every ingredient.

Are these Cups to Grams conversions exact?

They use standard average densities for peanut butter (about 256 g per cup). Actual weight varies with how the ingredient is packed, sifted, or ground, so weigh on a digital scale when a recipe is sensitive to hydration or leavening.