How much fiber is in peanut butter?
Peanut butter has 1.6 grams of fiber in 2 tablespoons (32 grams), according to USDA FoodData Central. That is 6% of the Daily Value, below the 10% the FDA requires before a label can call a food a good source of fiber. Per 100 grams, peanut butter has 5 grams of fiber.
1.6gof fiber in 2 tablespoons
6% of a 25 gram day
Fiber in peanut butter by serving size
| Serving | Weight | Fiber |
|---|---|---|
| 2 tbsp | 32g | 1.6g |
| 1 cup | 258g | 12.9g |
| 100 grams | 100g | 5g |
How peanut butter compares with other beans and legumes
Peanut butter ranks 5 of 6 beans and legumes in this library, by fiber in one serving.
- Black beans15g
- Chickpeas12.5g
- Edamame8.1g
- Peanut butter1.6g
- Hummus0.8g
Each bar is one serving: black beans, 1 cup, cooked; chickpeas, 1 cup, cooked; edamame, 1 cup, shelled; peanut butter, 2 tablespoons; hummus, 1 tablespoon.
A modest amount per serving
Two tablespoons of smooth peanut butter has 1.6 grams of fiber. It is 5 grams per 100 grams, but a serving is only 32 grams.
What it goes on does more
On two slices of whole wheat bread it makes 5.4 grams. On a medium apple it makes 6.
More fiber alongside peanut butter
- Brown rice: 3.2 grams in 1 cup, cooked
- Avocado: 9.2 grams in 1 avocado
- Whole wheat bread: 1.9 grams in 1 slice
Not sure what your daily number should be? The fiber calculator works it out from your age and sex.
Questions about fiber in peanut butter
- How much fiber is in peanut butter?
- Peanut butter has 1.6 grams of fiber in 2 tablespoons, which weighs 32 grams. The number comes from USDA FoodData Central.
- Is peanut butter high in fiber?
- One serving, 2 tablespoons, has 1.6 grams. That is 6% of the Daily Value, below the 10% the FDA requires before a label can call a food a good source of fiber. Peanut butter ranks 5 of 6 beans and legumes in this library by fiber per serving.
- How much fiber is in 100 grams of peanut butter?
- 5 grams of fiber per 100 grams. The largest size USDA lists, 1 cup, weighs 258 grams and has 12.9 grams of fiber.
- How many servings of peanut butter would it take to reach 25 grams of fiber?
- About 15.7, at 1.6 grams each. Most people reach 25 grams by mixing several foods across the day.
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Source: USDA FoodData Central, Peanut butter, smooth style, without salt, retrieved October 8, 2026. Label terms follow the FDA's 28 gram Daily Value for fiber.