Fiber One Cereal
Other

How much fiber is in fiber one cereal?

Fiber One Cereal has 14 g of fiber per 1/2 cup (30 g). That is 50% of the daily value and a very high amount for a other.

14g
per 1/2 cup
46.7g
per 100 g
50%
daily value
#1of 20
other foods

Soluble vs insoluble

Soluble 1g 7% Insoluble 13g 93%

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 fiber one cereal and fiber

A half cup of Fiber One original provides 14 grams of fiber, the highest single serving in this database, mostly from added chicory root fiber and wheat bran. Added inulin can cause gas when you are not used to it, so start small.

Low FODMAP at this serving

How fiber one cereal compares to other other foods

Per typical serving. Fiber One Cereal is the highest other in the database.

FoodServingFiberPer 100 g% DV
Fiber One Cereal1/2 cup14 g46.7 g50%
All-Bran Cereal1/2 cup10 g33.3 g36%
Chili with Beans1 cup9 g3.6 g32%
Raisin Bran1 cup7 g11.9 g25%
Lentil Soup1 cup6.5 g2.6 g23%
Shredded Wheat2 biscuits6 g13 g21%
Baked Beans1/2 cup5.2 g4.1 g19%

All 20 other foods ranked by fiber

Servings to reach a daily goal

2×

servings of fiber one cereal to reach 25 g, the adequate intake for adult women

3×

servings of fiber one cereal 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 fiber one cereal

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

USDA descriptionFiber / 100 gSolubleInsoluble
Cereal or granola bar (General Mills Fiber One Chewy Bar)22.5 g––

Frequently asked questions

How much fiber is in fiber one cereal?
1/2 cup of fiber one cereal, about 30 grams, contains 14 grams of dietary fiber. That is 46.7 grams of fiber per 100 grams and 50% of the 28 gram daily value.
Is fiber one cereal high in fiber?
Yes. At 14 g per serving, fiber one cereal ranks 1 of 20 other foods in the FiberUp database and 1 of 198 foods overall.
Is the fiber in fiber one cereal soluble or insoluble?
About 7% of the fiber in fiber one cereal is soluble (1 g) and 93% is insoluble (13 g). Soluble fiber forms a gel that slows digestion and feeds gut bacteria; insoluble fiber adds bulk and speeds transit.
How many servings of fiber one cereal would reach a daily fiber goal?
It would take about 2 servings to reach 25 g (the adequate intake for adult women) and 3 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.