Peanut Butter — Cups to Grams
1 cup of peanut butter = 258 grams
1 cup of peanut butter weighs approximately 258 grams. Use the converter below for custom amounts, or check the full conversion table.
Peanut Butter Converter
Result
258 g
Why Does Peanut Butter Weigh 258g Per Cup?
Peanut butter is slightly denser than water, but its stickiness is the real measurement challenge. Unlike liquids that pour cleanly, peanut butter clings to measuring cups, leaving behind 10-20% of what you measured. This is why weighing peanut butter directly into your mixing bowl is far more accurate than using cups.
A cup of peanut butter (258g) weighs about the same as a cup of honey (340g) — both are dense, sticky ingredients that are notoriously difficult to measure by volume. Peanut butter weighs twice as much as a cup of flour.
When Does Precision Matter for Peanut Butter?
Peanut butter precision matters most in cookies, where it affects spread, texture, and structure. Classic peanut butter cookies rely on precise ratios — too much makes them greasy, too little makes them dry. In sauces (satay, peanut dressing), precision is less critical — adjust to taste. For no-bake treats and energy balls, eyeballing usually works fine. The type of peanut butter (natural vs commercial, smooth vs chunky) affects results more than exact measurement.
How to Measure Peanut Butter Correctly
To measure peanut butter easily, lightly grease your measuring cup or spoon with oil or cooking spray first — this helps the peanut butter slide out cleanly. For the most accurate measurement, use a kitchen scale. When a recipe calls for "creamy" peanut butter, it means smooth, not chunky.
Understanding Peanut Butter Measurements
Peanut butter is a spread made from ground peanuts. One cup of smooth peanut butter weighs approximately 258 grams. Its dense, sticky texture makes it challenging to measure accurately by volume, which is why weight measurements are recommended.
Common Uses in Baking & Cooking
Peanut butter is used in cookies, brownies, and no-bake treats. It's also used in sauces and dressings. Natural peanut butter (with oil separation) may need to be stirred before measuring, while commercial peanut butter is usually already mixed. The type of peanut butter can affect the texture of baked goods. If you need a substitute, see our Peanut Butter substitution guide.
Storage and Handling Tips
Store peanut butter in a cool, dry place. Natural peanut butter should be refrigerated after opening to prevent oil separation. Commercial peanut butter can be stored at room temperature. If oil separates, stir it back in before using.
Need to convert peanut butter to other units? Try our cups to grams converter or tablespoons to grams converter.
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US Cups vs UK Cups — What's the Difference?
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Related Ingredients
Peanut Butter Conversion Table
| Amount | Grams | Ounces |
|---|---|---|
| 1 teaspoon | 5.38g | 0.19 oz |
| 1 tablespoon | 16.1g | 0.57 oz |
| ¼ cup | 64.5g | 2.28 oz |
| ⅓ cup | 86g | 3.03 oz |
| ½ cup | 129g | 4.55 oz |
| ⅔ cup | 172g | 6.07 oz |
| ¾ cup | 194g | 6.83 oz |
| 1 cup | 258g | 9.1 oz |
| 1½ cups | 387g | 13.7 oz |
| 2 cups | 516g | 18.2 oz |
Peanut Butter — US, Metric & UK Cup Conversions
Cup sizes vary by country. This table shows how much peanut butter weighs when measured with US cups (most online recipes), metric cups (Australia, NZ, Canada), or UK/Imperial cups.
| Amount | US Cup(236.6 ml) | Metric Cup(250 ml) | UK Cup(284 ml) |
|---|---|---|---|
| ¼ cup | 64.5g | 68.2g | 77.5g |
| ⅓ cup | 86g | 90.9g | 103g |
| ½ cup | 129g | 136g | 155g |
| ⅔ cup | 172g | 182g | 207g |
| ¾ cup | 194g | 204g | 232g |
| 1 cup | 258g | 273g | 310g |
| 1½ cups | 387g | 409g | 465g |
| 2 cups | 516g | 545g | 620g |
Note: US cups (236.6 ml) are standard in most online recipes. Metric cups (250 ml, used in Australia, NZ, Canada) hold 5.7% more. UK/Imperial cups (284 ml) hold 20% more than US cups.
Measurement Note
Smooth.
Need a Substitute?
Out of peanut butter? We've got 4 tested alternatives with exact ratios.
Frequently Asked Questions
What's the difference between natural and commercial peanut butter?▼
How do I measure peanut butter without making a mess?▼
Can I substitute almond butter for peanut butter?▼
How many grams in 1 cup of peanut butter?▼
Why did my peanut butter cookies turn out flat/dry/crumbly?▼
More Nuts & Seeds
Related Converters
Values are approximate and can vary depending on how the ingredient is measured. For precision baking, we recommend using a digital kitchen scale.