Vegetable

How much fiber is in radishes?

Radishes have 0.9 g of fiber per 1/2 cup sliced (58 g). That is 3% of the daily value and a low amount for a vegetable.

0.9g

per 1/2 cup sliced

1.6g

per 100 g

daily value

#53of 60

vegetables

Soluble vs insoluble

Soluble 0.3g 33% Insoluble 0.6g 67%

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 radishes and fiber

A half cup of sliced radishes provides 0.9 grams of fiber. They are low FODMAP and add crunch, but they are not a meaningful fiber source on their own.

Counts toward plant diversityLow FODMAP at this serving

How radishes 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
Kimchi	1/2 cup	1.2 g	1.6 g	4%
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%

All 60 vegetables ranked by fiber

Servings to reach a daily goal

28×

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

43×

servings of radishes 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 radishes

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
Radishes, red, raw	1.3 g	–	–
Radishes, raw	1.6 g	–	–
Radishes, oriental, raw	1.6 g	–	–
Radishes, white icicle, raw	1.4 g	–	–
Radishes, oriental, dried	23.9 g	–	–
Radishes, hawaiian style, pickled	2.2 g	–	–
Radishes, oriental, cooked, boiled, drained, without salt	1.6 g	–	–
Radishes, oriental, cooked, boiled, drained, with salt	1.6 g	–	–

Frequently asked questions

How much fiber is in radishes?

1/2 cup sliced of radishes, about 58 grams, contains 0.9 grams of dietary fiber. That is 1.6 grams of fiber per 100 grams and 3% of the 28 gram daily value.

Are radishes high in fiber?

Not especially. Radishes have 0.9 g per serving, which ranks 53 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 radishes soluble or insoluble?

About 33% of the fiber in radishes is soluble (0.3 g) and 67% is insoluble (0.6 g). Soluble fiber forms a gel that slows digestion and feeds gut bacteria; insoluble fiber adds bulk and speeds transit.

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

It would take about 28 servings to reach 25 g (the adequate intake for adult women) and 43 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.