Nuts, Seeds & Butters
Peanut Butter conversion chart
1 cup of peanut butter = 258 g = 9.1 oz. Convert any amount below, or use the reference charts for cups, tablespoons, grams and ounces.
1 cup of peanut butter =
258 g
- oz
- 9.1
- kg
- 0.258
- lb
- 0.569
- 1 cup
- 258 g
- 1 tablespoon
- 16.1 g
- 1 teaspoon
- 5.38 g
- 1 cup in ounces
- 9.1 oz
- 100 g in cups
- 0.388 cups
- Density
- 1.09 g/ml
Measuring note
Natural peanut butter separates. Stir it fully before measuring, or the ratio of oil to solids is off.
Source: USDA FoodData Central
Peanut Butter cups to grams chart
US cups converted to grams, ounces and millilitres. Fractions are written the way recipes write them.
| Cups (US) | Grams | Ounces (weight) | Millilitres |
|---|---|---|---|
| 1/8 cup | 32.3 g | 1.14 oz | 29.6 ml |
| 1/4 cup | 64.5 g | 2.28 oz | 59.1 ml |
| 1/3 cup | 86 g | 3.03 oz | 78.9 ml |
| 1/2 cup | 129 g | 4.55 oz | 118 ml |
| 2/3 cup | 172 g | 6.07 oz | 158 ml |
| 3/4 cup | 194 g | 6.83 oz | 177 ml |
| 1 cup | 258 g | 9.1 oz | 237 ml |
| 1 1/2 cup | 387 g | 13.7 oz | 355 ml |
| 2 cup | 516 g | 18.2 oz | 473 ml |
| 3 cup | 774 g | 27.3 oz | 710 ml |
| 4 cup | 1032 g | 36.4 oz | 946 ml |
Tablespoons and teaspoons
1 tbsp ≈ 16.1 g · 1 tsp ≈ 5.38 g
| Tablespoons (US) | Grams | Cups (US) |
|---|---|---|
| 1 tbsp | 16.1 g | 0.063 cup |
| 2 tbsp | 32.3 g | 0.125 cup |
| 3 tbsp | 48.4 g | 0.188 cup |
| 4 tbsp | 64.5 g | 0.25 cup |
| 5 tbsp | 80.6 g | 0.313 cup |
| 6 tbsp | 96.8 g | 0.375 cup |
| 8 tbsp | 129 g | 0.5 cup |
| 10 tbsp | 161 g | 0.625 cup |
| 12 tbsp | 194 g | 0.75 cup |
| 16 tbsp | 258 g | 1 cup |
Grams back to cups
Useful when a metric recipe gives grams but you only own cups.
| Grams | Cups (US) | Tablespoons (US) |
|---|---|---|
| 10 g | 0.039 cup | 0.62 tbsp |
| 25 g | 0.097 cup | 1.55 tbsp |
| 50 g | 0.194 cup | 3.1 tbsp |
| 75 g | 0.291 cup | 4.65 tbsp |
| 100 g | 0.388 cup | 6.2 tbsp |
| 125 g | 0.484 cup | 7.75 tbsp |
| 150 g | 0.581 cup | 9.3 tbsp |
| 200 g | 0.775 cup | 12.4 tbsp |
| 250 g | 0.969 cup | 15.5 tbsp |
| 500 g | 1.94 cup | 31 tbsp |
| 1000 g | 3.88 cup | 62 tbsp |
Single-conversion pages for peanut butter
Working with peanut butter
Peanut Butter sits in the nuts, seeds & butters group, where the ingredient is denser than water, so a cup weighs more than 240 g and volume errors translate into large weight errors. Natural peanut butter separates. Stir it fully before measuring, or the ratio of oil to solids is off.
If you are converting a whole recipe rather than a single line, the Recipe to Metric converter matches every ingredient to its own density in one pass, and the Recipe Scaler resizes the batch first so you only convert once.
Frequently asked questions
How many grams are in a cup of peanut butter?
One US cup of peanut butter weighs about 258 grams (9.1 oz). Natural peanut butter separates. Stir it fully before measuring, or the ratio of oil to solids is off.
How many grams are in a tablespoon of peanut butter?
One US tablespoon holds about 16.1 g, and one teaspoon about 5.38 g, since a tablespoon is 14.79 ml and a teaspoon 4.93 ml.
How many cups is 100 g of peanut butter?
100 grams of peanut butter is roughly 0.388 US cups. Weighing is more reliable than filling a cup, especially for nuts, seeds & butters.
Where does this figure come from?
The density used here is 1.091 g/ml, based on USDA FoodData Central. Treat it as an approximation: real batches vary with brand, moisture and how the cup is filled.