How much fiber is in mushrooms?
Mushrooms have 0.7 grams of fiber in 1 cup, sliced (70 grams), according to USDA FoodData Central. That is 3% 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, mushrooms have 1 grams of fiber.
0.7gof fiber in 1 cup, sliced
3% of a 25 gram day
Fiber in mushrooms by serving size
| Serving | Weight | Fiber |
|---|---|---|
| 1 slice | 6g | 0.1g |
| 1 small | 10g | 0.1g |
| 1 medium | 18g | 0.2g |
| 1 large | 23g | 0.2g |
| 0.5 cup pieces | 35g | 0.4g |
| 1 cup, pieces or slices | 70g | 0.7g |
| 1 cup, whole | 96g | 1g |
| 100 grams | 100g | 1g |
How mushrooms compare with other vegetables
Mushrooms rank 19 of 22 vegetables in this library, by fiber in one serving.
Each bar is one serving: asparagus, 4 spears, cooked; kale, 1 cup, raw; mushrooms, 1 cup, sliced; spinach, 1 cup, raw; celery, 1 medium stalk.
Very little fiber
A cup of sliced white mushrooms has 0.7 grams of fiber. Per 100 grams that is 1, close to the bottom of the vegetables here.
Use them for flavor
Mushrooms add bulk and taste, not fiber. Sauteed into a cup of cooked lentils, the dish has 16.3 grams.
More fiber alongside mushrooms
- Chickpeas: 12.5 grams in 1 cup, cooked
- Quinoa: 5.2 grams in 1 cup, cooked
- Lentils: 15.6 grams in 1 cup, cooked
Not sure what your daily number should be? The fiber calculator works it out from your age and sex. For a longer list to shop from, see 50 high-fiber foods ranked by fiber.
Questions about fiber in mushrooms
- How much fiber is in mushrooms?
- Mushrooms have 0.7 grams of fiber in 1 cup, sliced, which weighs 70 grams. The number comes from USDA FoodData Central.
- Are mushrooms high in fiber?
- One serving, 1 cup, sliced, has 0.7 grams. That is 3% of the Daily Value, below the 10% the FDA requires before a label can call a food a good source of fiber. Mushrooms rank 19 of 22 vegetables in this library by fiber per serving.
- How much fiber is in 100 grams of mushrooms?
- 1 grams of fiber per 100 grams. The largest size USDA lists, 1 cup, whole, weighs 96 grams and has 1 grams of fiber.
- How many cups of mushrooms would it take to reach 25 grams of fiber?
- About 35.8, at 0.7 grams each. Most people reach 25 grams by mixing several foods across the day.
Track your fiber intake with Grove
Search real foods, hit your daily goal, and build a gut health habit. On iPhone, iOS 18.0 or later.
Source: USDA FoodData Central, Mushrooms, white, raw, retrieved November 5, 2026. Label terms follow the FDA's 28 gram Daily Value for fiber.