Vegetable

How much fiber is in mushrooms?

Mushrooms have 0.7 g of fiber per 1 cup sliced (70 g). That is 3% of the 28 g daily value and a low amount for a vegetable. Per 100 g it works out to 1 g, which rank 54 of 60 vegetables in the FiberUp database. About 29% of that fiber is soluble and 71% insoluble. It would take 36 servings to reach the 25 g adequate intake for women and 55 for the 38 g for men. Source: USDA FoodData Central.

By Anthony Calise, maker of FiberUp. Data checked October 2026.

0.7g

per 1 cup sliced

per 100 g

daily value

#54of 60

vegetables

Soluble vs insoluble

Soluble 0.2g 29% Insoluble 0.5g 71%

The split is approximate and comes from USDA SR Legacy analyses where available. Soluble fiber dissolves into a gel and is the type most linked to cholesterol and blood sugar effects. Insoluble fiber adds bulk and keeps things moving.

About mushrooms and fiber

Mushrooms are low in fiber at 0.7 grams per cup sliced, and most of what they have is in the form of beta-glucans and chitin. Most common mushrooms are high FODMAP from mannitol.

Counts toward plant diversityHigh FODMAP at this serving

How mushrooms compares to other vegetables

Per typical serving. The highest vegetable in the database is artichoke at 6.9 g.

Food	Serving	Fiber	Per 100 g	% DV
Olives	10 olives	1.1 g	3.3 g	4%
Cucumber	1/2 medium	0.9 g	0.6 g	3%
Radishes	1/2 cup sliced	0.9 g	1.6 g	3%
Mushrooms	1 cup sliced	0.7 g	1 g	3%
Arugula	2 cups	0.6 g	1.5 g	2%
Green Onions (Scallions)	1/4 cup chopped	0.6 g	2.4 g	2%
Leek	1/2 cup cooked	0.5 g	1 g	2%

All 60 vegetables ranked by fiber

Servings to reach a daily goal

36×

servings of mushrooms to reach 25 g, the adequate intake for adult women

55×

servings of mushrooms to reach 38 g, the adequate intake for adult men

Nobody should get all their fiber from one food. Gut bacteria respond to variety, and the fiber calculator shows a mixed day that reaches your number.

USDA entries for mushrooms

Grams of fiber per 100 g from USDA FoodData Central (snapshot 2026-10-11). Different preparations and varieties explain the spread.

USDA description	Fiber / 100 g	Soluble	Insoluble
Mushroom, beech	3.1 g	–	–
Mushroom, enoki	2.9 g	–	–
Mushroom, oyster	2.9 g	–	–
Mushroom, crimini	1.8 g	–	–
Mushroom, maitake	3.1 g	–	–
Mushroom, pioppini	2.8 g	–	–
Mushrooms, shiitake	4.2 g	–	–
Mushroom, portabella	1.9 g	–	–

Frequently asked questions

How much fiber is in mushrooms?

1 cup sliced of mushrooms, about 70 grams, contains 0.7 grams of dietary fiber. That is 1 grams of fiber per 100 grams and 3% of the 28 gram daily value.

Are mushrooms high in fiber?

Not especially. Mushrooms have 0.7 g per serving, which ranks 54 of 60 vegetables in the FiberUp database. It still counts toward plant diversity, but the fiber in a meal will come from elsewhere.

Is the fiber in mushrooms soluble or insoluble?

About 29% of the fiber in mushrooms is soluble (0.2 g) and 71% is insoluble (0.5 g). Soluble fiber forms a gel that slows digestion and feeds gut bacteria; insoluble fiber adds bulk and speeds transit.

How many servings of mushrooms would reach a daily fiber goal?

It would take about 36 servings to reach 25 g (the adequate intake for adult women) and 55 servings to reach 38 g (adult men). Spreading fiber across several foods is easier and better for gut bacteria diversity.

Values are per typical serving from USDA FoodData Central and standard references, rounded to one decimal. Actual fiber varies with variety, ripeness, and preparation. This is general nutrition information, not medical advice.