Peanut Butter:
Grams to Cups
By Stefan Ulrich · Last updated
Smooth peanut butter weighs 258 grams per cup — significantly denser than butter and among the heavier everyday baking ingredients. Crunchy peanut butter runs approximately 250–255 g/cup due to the air pockets created by the nut pieces.
How much Peanut Butter weighs at each cup measure.
Convert Peanut Butter
1 cup = 258 grams
= — grams
= — cups
Quick reference
Measurement Table
| Cups | Grams | Ounces |
|---|---|---|
| 1 tsp | 5 g | 0.18 oz |
| 1 tbsp | 16 g | 0.56 oz |
| ⅛ cup | 32 g | 1.13 oz |
| ¼ cup | 65 g | 2.29 oz |
| ⅓ cup | 86 g | 3.03 oz |
| ½ cup | 129 g | 4.55 oz |
| ⅔ cup | 172 g | 6.07 oz |
| ¾ cup | 194 g | 6.84 oz |
| 1 cup | 258 g | 9.10 oz |
| 1¼ cups | 323 g | 11.39 oz |
| 1½ cups | 387 g | 13.65 oz |
| 2 cups | 516 g | 18.20 oz |
| 3 cups | 774 g | 27.30 oz |
About Peanut Butter
Peanut butter is notoriously difficult to measure by cup because of its thick, sticky consistency. The standard technique is to press it firmly into a dry measuring cup and level the top — but air pockets almost always form at the bottom, causing significant undermeasurement.
Natural peanut butter (separated with oil on top) is slightly lighter at 250–255 g/cup because natural-style tends to be less dense. Always stir natural peanut butter thoroughly before measuring; unmixed peanut butter with oil pooled on top will measure differently than well-integrated peanut butter.
For recipes using small amounts (2–4 tablespoons), the weight difference between smooth and crunchy is negligible. For peanut butter cookies or bars using ½ cup or more, weighing is the most reliable approach.
Sunflower seed butter and soy nut butter weigh approximately 240–250 g/cup. Almond butter and cashew butter are about 250–260 g/cup — all close enough to use the peanut butter conversion as a baseline.
Tips for measuring Peanut Butter
- Press firmly and eliminate air pockets — undermeasurement is the main risk.
- Coat measuring cup with oil spray for easier release.
- Natural peanut butter: stir completely before measuring.
- All nut butters are approximately 250–260 g/cup — use 258 g as default.
Common mistakes
- Not pressing out air pockets — can result in 20–30 g less than the recipe requires
- Measuring unmixed natural peanut butter — oil-only or paste-only layers differ in density
Frequently Asked Questions
- How many grams in a cup of Peanut Butter?
- 1 cup of Peanut Butter weighs 258 grams — the standard used in most American recipes. Use the converter above for any other amount.
- How many grams is 1 tablespoon of Peanut Butter?
- 1 tablespoon of Peanut Butter weighs about 16 grams. The full table above lists every common cup fraction.
- What's the most common mistake when measuring Peanut Butter?
- Not pressing out air pockets — can result in 20–30 g less than the recipe requires. Weighing on a kitchen scale avoids it entirely.
- How do I measure Peanut Butter without the mess?
- Grease the cup or warm the peanut Butter slightly so it levels easily and releases cleanly — weighing is still the most reliable method.