Nutrition Updated May 14, 2026 By Anthony Calise Updated May 16, 2026

Best High-Fiber Cereals at the Grocery Store (2026)

Cereal is one of the easiest fiber wins in the average American kitchen. Pour, splash, done. The catch is that half of the boxes claiming "good source of fiber" are mostly sugar with a thin coat of bran. Here's a brand-by-brand ranking of what's actually high in fiber at a normal US grocery store in 2026, and which ones to skip.

Quick Answer

A brand-by-brand ranking of the highest-fiber cereals you can actually buy: All-Bran, Fiber One, Kashi GoLean, and more. Fiber per serving and sugar warnings.

The Top Tier (10g+ Per Serving)

Fiber One Original Bran

~18g fiber per half cup, 0g sugar. The king. A half-cup gives you more than half a typical daily target. Texture is chewy and brittle (basically little bran twigs), so it's not for everyone, but its fiber per spoonful is unmatched. It uses sucralose, which some people prefer to avoid; if you can live with that, this is the single fastest way to add 18g of fiber to your day.

All-Bran Original

~10g fiber per half cup, 6g sugar. The original bran cereal. Slightly more palatable than Fiber One Original, sweetened with a small amount of sugar and malt extract. Good middle ground between flavor and pure fiber count.

All-Bran Buds (Kellogg's, sometimes labeled All-Bran Bran Buds)

~13g fiber per third cup, 8g sugar. Tiny pellets that look like rabbit food. Very dense, useful as a topping over yogurt or to mix into smoothies. The serving size is small but the fiber-per-bite is huge.

Kashi GoLean Original

~10g fiber per cup, 6g sugar. Mix of crunchy whole grain puffs and twigs. Fiber comes mostly from whole grains rather than added bran, which some prefer. Higher protein too (about 13g per cup).

Bob's Red Mill 10-Grain or 5-Grain Hot Cereal

~7-9g fiber per quarter cup dry. Cooked hot cereal, halfway between oats and porridge. No added sugar. Great base to top with fruit and nuts for a 12-15g fiber breakfast.

The Solid Middle Tier (5-9g Per Serving)

Post Shredded Wheat Original

~6-8g fiber per serving (one to two biscuits), 0g sugar. Just whole wheat, nothing added. Simple, cheap, and very clean. The frosted version drops fiber and adds sugar, so stick with original.

Barbara's Shredded Wheat

~6g fiber per biscuit, 0g sugar. Similar to Post, slightly different texture, organic option.

Cheerios (regular)

~3g fiber per cup, 2g sugar. Not a star, but cleaner than people assume. Two cups gets you 6g.

Multigrain Cheerios

~3g fiber per cup, 6g sugar. Sneakier on the sugar.

Kashi 7 Whole Grain Puffs / Heart to Heart

~5g fiber per serving, 1-5g sugar depending on variant. Solid middle ground.

Oatmeal (Plain Old-Fashioned)

~4g fiber per half cup dry, 0g sugar. Not technically a cereal-aisle product, but unbeatable for value per dollar. Beta-glucan, soluble fiber, and a blank canvas for fruit, nuts, seeds.

The "Don't Be Fooled" Tier

These often appear on "high fiber" cereal lists or have marketing that suggests they're great. They're not bad, but they're not what you want if fiber is the goal.

Raisin Bran (most brands) — 7g fiber but also 18-20g sugar per serving
Frosted Mini-Wheats — 5-6g fiber, 11-12g sugar
Fiber One Honey Clusters / Frosted Shredded Wheat — much lower fiber than Fiber One Original (typically 5-7g) and 6-9g sugar
Special K with Protein — about 3g fiber per serving despite the healthy branding
Granola — varies wildly. Most store-brand granola is in the 3-5g fiber range with 10-15g sugar per serving.

How to Read the Cereal Box

Two numbers matter: fiber per serving and sugar per serving. A good rule of thumb is to look for at least 5g of fiber and less than 8g of sugar per serving. Anything above that ratio is usually a sugary cereal with a fiber sprinkle.

Also check serving size. Many cereals list a half cup as a serving, which is tiny. If you actually pour a normal bowl (1.5 to 2 cups) you're getting 3-4x the listed fiber, but also 3-4x the sugar.

For more on label decoding, see how to read nutrition labels for fiber.

The Stacking Strategy

You don't have to choose just one. The most fiber-efficient breakfast bowl is a base of moderate-fiber cereal plus a topping that fills the gap. For example:

Plain shredded wheat (6g) + half cup blueberries (2g) + 1 tablespoon ground flax (2g) + 1 tablespoon almonds (1g) = 11g fiber in a single bowl
Cheerios (3g) + half cup raspberries (4g) + 2 tablespoons chia (10g) + a sliced banana (3g) = 20g fiber

That last one is two thirds of a daily target before 8 AM.

Frequently Asked Questions

What is the highest fiber cereal at the grocery store?

Fiber One Original Bran with 18g of fiber per half-cup serving is the standard high mark. All-Bran Original comes in around 10g per half cup. All-Bran Buds is also among the highest by serving.

Is Fiber One cereal good for you?

It's very high in fiber, but most Fiber One products contain artificial sweeteners. The Original Bran is one of the cleaner options. The clustered cereals like Honey Squares or Frosted Shredded Wheat have added sugar and lower fiber per serving.

What cereal has the most fiber and lowest sugar?

Fiber One Original Bran (18g fiber, 0g sugar) and All-Bran Original (10g fiber, 6g sugar) are the leaders. Plain oat bran and unsweetened oatmeal are even better on the sugar front.

Are Kashi cereals high in fiber?

Kashi GoLean has 10g of fiber per cup, which is excellent. Other Kashi cereals like Heart to Heart and Cinnamon Harvest typically have 5-7g per serving.

Is shredded wheat a high-fiber cereal?

Plain shredded wheat (Post Original Shredded Wheat or Barbara's) has 6-8g of fiber per serving with no added sugar. It's a solid mid-range option that beats most flake cereals.

Sources and Scope

This article is educational nutrition information, not medical advice. Increase fiber gradually, drink enough water, and talk with a qualified clinician if you have gastrointestinal disease, pregnancy-specific concerns, or medication interactions.