How Many Grams in a Cup of Peanut butter?
1 cup of peanut butter = 258 grams · 100g = 0.39 cups
Peanut butter is thick, dense and sticky, weighing about 258 grams per cup — one of the heaviest add-ins by volume. Its stickiness makes it cling to the measuring cup, so weighing is far cleaner. Natural peanut butter separates and needs stirring before measuring.
Based on a measured density of 258 g per US cup (236.6 ml), stirred, then spooned and levelled. Last reviewed .
Peanut butter cups to grams table
| Cups | Grams | Ounces | Tablespoons |
|---|---|---|---|
| 1/8 | 32.2 g | 1.14 oz | 2 |
| 1/4 | 64.5 g | 2.28 oz | 4 |
| 1/3 | 85.9 g | 3.03 oz | 5.33 |
| 1/2 | 129 g | 4.55 oz | 8 |
| 2/3 | 172 g | 6.07 oz | 10.7 |
| 3/4 | 194 g | 6.83 oz | 12 |
| 1 | 258 g | 9.1 oz | 16 |
| 1 1/2 | 387 g | 13.7 oz | 24 |
| 2 | 516 g | 18.2 oz | 32 |
| 3 | 774 g | 27.3 oz | 48 |
Peanut butter grams to cups table
Working the other way? Here's how many cups common gram weights of peanut butter come to, handy when a recipe lists peanut butter in grams but you only have cup measures.
| Grams | Cups | Ounces | Tablespoons |
|---|---|---|---|
| 25 g | 0.1 | 0.88 oz | 1.55 |
| 50 g | 0.19 | 1.76 oz | 3.1 |
| 75 g | 0.29 | 2.65 oz | 4.65 |
| 100 g | 0.39 | 3.53 oz | 6.2 |
| 125 g | 0.48 | 4.41 oz | 7.75 |
| 150 g | 0.58 | 5.29 oz | 9.3 |
| 175 g | 0.68 | 6.17 oz | 10.9 |
| 200 g | 0.78 | 7.05 oz | 12.4 |
| 225 g | 0.87 | 7.94 oz | 14 |
| 250 g | 0.97 | 8.82 oz | 15.5 |
| 300 g | 1.16 | 10.6 oz | 18.6 |
| 350 g | 1.36 | 12.3 oz | 21.7 |
| 400 g | 1.55 | 14.1 oz | 24.8 |
| 500 g | 1.94 | 17.6 oz | 31 |
Peanut butter: US, metric & UK cups compared
A “cup” isn’t the same size everywhere, so 1 cup of peanut butter weighs a different number of grams depending on which cup your recipe uses. The US cup is 236.6 ml, while Australia, New Zealand, Canada and modern UK recipes use a 250 ml metric cup. Here’s 1 cup of peanut butter in each:
| Cup standard | Size | 1 cup peanut butter | Used in |
|---|---|---|---|
| US cup | 237 ml | 258 g | United States (most US recipe sites) |
| Metric cup | 250 ml | 273 g | Australia, NZ, Canada & modern UK |
| UK imperial cup | 284 ml | 310 g | Older British recipes |
| Japanese cup | 200 ml | 218 g | Japan |
Unless a recipe says otherwise, US recipes mean the US cup and Australian/UK recipes mean the 250 ml metric cup. The tables higher up this page use the US cup.
Related ingredients
Quick reference: Peanut butter in grams
- ⅛ cup peanut butter = 32.2g
- ¼ cup peanut butter = 64.5g — a quarter cup of peanut butter in grams
- ⅓ cup peanut butter = 85.9g — a third of a cup
- ½ cup peanut butter = 129g — half a cup of peanut butter in grams
- ⅔ cup peanut butter = 172g — two thirds of a cup
- ¾ cup peanut butter = 194g — three quarters of a cup
- 1 cup peanut butter = 258g — one cup of peanut butter in grams
- 2 cups peanut butter = 516g — two cups
Peanut butter by the spoonful and by the ounce
Recipes rarely stop at cups. One tablespoon of peanut butter weighs about 16.1g, and one teaspoon about 5.38g, because a US cup holds 16 tablespoons or 48 teaspoons.
- 1 tablespoon peanut butter to grams = 16.1g
- 2 tablespoons peanut butter = 32.2g
- 3 tablespoons peanut butter = 48.4g
- 1 teaspoon peanut butter = 5.38g
Weight units do not depend on the ingredient, so 8 oz of peanut butter is 227g and 4 oz is 113g, the same as 8 oz of anything else. That 8 oz is 0.88 cups of peanut butter — the number that does change, because it depends on how much a cup of peanut butter weighs.
How many cups is 100g, 200g or 300g of peanut butter?
Because one cup of peanut butter weighs about 258 grams, you can convert any weight to cups by dividing by 258. So 100g of peanut butter is about 0.39 cups, 200g is about 0.78 cups, 250g is about 0.97 cups, and 300g is about 1.16 cups. For any other amount, type the grams straight into the converter above and switch it to show cups.
How to measure peanut butter accurately
For the most reliable baking results, weigh peanut butter on a kitchen scale rather than scooping by volume. One US cup of peanut butter weighs about 258 grams (9.1 oz), but the exact figure changes with how tightly it's packed and the brand. Scooping straight from the bag compacts peanut butter and can leave you 15 to 20% over, so spoon it into the cup and level it off for the closest match to the figures above. Use the tables for quick reference, or the converter for any custom amount in cups, grams, ounces or tablespoons.
Tip: Stir natural peanut butter thoroughly to recombine the oil before measuring, and lightly oil the cup so the sticky butter releases cleanly.
Peanut butter conversions: common questions
How many grams are in a cup of peanut butter?
One US cup of peanut butter weighs approximately 258 grams (9.1 oz).
How many grams in half a cup of peanut butter?
Half a cup (½ cup) of peanut butter weighs approximately 129 grams.
How many grams in a quarter cup of peanut butter?
A quarter cup (¼ cup) of peanut butter weighs approximately 64.5 grams.
How do I convert peanut butter from cups to grams?
Multiply the number of cups by 258. For example, 2 cups of peanut butter = 516 grams, and ¾ cup = 194 grams.
How many cups is 100g of peanut butter?
100 grams of peanut butter is about 0.39 cups. 200g is about 0.78 cups and 300g is about 1.16 cups, since 1 cup weighs 258 grams.
How many grams in a metric (Australian) cup of peanut butter?
One 250 ml metric cup of peanut butter, used in Australia, New Zealand, Canada and modern UK recipes, weighs about 273 grams, compared with 258 grams for a 236.6 ml US cup.