Introduction
Fiber keeps you full, steadies your blood sugar, and feeds the bacteria in your gut, yet most people get barely half of what they need. This is the complete list of high-fiber foods by category, with the gram counts that matter and a simple way to reach your daily target.
What counts as a high-fiber food
Fiber is the part of a plant your body cannot break down. It passes through your digestive tract mostly intact, and that is exactly why it helps you. It slows digestion, smooths out blood sugar, adds bulk that keeps you regular, and feeds the bacteria in your gut.
A food is usually called high in fiber when it gives you at least 5 grams per serving, and a good source when it gives you 3 to 4 grams. The list below is sorted by how much fiber you actually get in a normal portion, because a food can look impressive per 100 grams and still add little to your day once you account for how much of it you eat.
Only plants carry fiber. Meat, fish, eggs, and dairy have none. So a high-fiber pattern is built from beans, whole grains, vegetables, fruit, nuts, and seeds. The more of your plate that comes from those groups, the easier your target gets.
The complete list of high-fiber foods
These are the gram counts for a standard serving, drawn from published nutrition data. Use them to find the foods you already like and lean into those first.
Beans, lentils, and other legumes
Legumes are the richest everyday source of fiber, and they bring protein along with it. A single cup of cooked beans can cover most of a day's target on its own.
| Food | Serving | Fiber (g) |
|---|---|---|
| Navy beans | 1 cup cooked | 19 |
| Split peas | 1 cup cooked | 16 |
| Lentils | 1 cup cooked | 15.5 |
| Black beans | 1 cup cooked | 15 |
| Chickpeas | 1 cup cooked | 12.5 |
| Kidney beans | 1 cup cooked | 11 |
Whole grains
Whole grains keep the bran and germ that refined grains strip away, and the bran is where most of the fiber lives. Swapping white versions for whole ones is one of the simplest upgrades you can make.
| Food | Serving | Fiber (g) |
|---|---|---|
| Bulgur | 1 cup cooked | 8 |
| Barley | 1 cup cooked | 6 |
| Whole-wheat pasta | 1 cup cooked | 6 |
| Quinoa | 1 cup cooked | 5 |
| Oatmeal | 1 cup cooked | 4 |
| Brown rice | 1 cup cooked | 3.5 |
Vegetables
Vegetables give you a lot of fiber for very few calories, which makes them the backbone of any plan built around feeling full. Leave the skins on where you can, since much of the fiber sits just under them.
| Food | Serving | Fiber (g) |
|---|---|---|
| Artichoke | 1 medium | 10 |
| Green peas | 1 cup cooked | 9 |
| Broccoli | 1 cup cooked | 5 |
| Brussels sprouts | 1 cup cooked | 4 |
| Sweet potato | 1 medium with skin | 4 |
| Carrots | 1 cup raw | 3.5 |
Fruit
Whole fruit keeps the fiber that juice throws away. A piece of fruit with the skin on is a portable, naturally sweet way to add a few grams without thinking about it.
| Food | Serving | Fiber (g) |
|---|---|---|
| Raspberries | 1 cup | 8 |
| Pear | 1 medium with skin | 5.5 |
| Apple | 1 medium with skin | 4.5 |
| Banana | 1 medium | 3 |
| Orange | 1 medium | 3 |
| Strawberries | 1 cup | 3 |
Nuts and seeds
Nuts and seeds are concentrated, so the portions are small, but a spoonful of chia or ground flax stirred into yogurt or oats adds up fast.
| Food | Serving | Fiber (g) |
|---|---|---|
| Chia seeds | 1 oz | 10 |
| Flaxseed | 1 oz | 8 |
| Almonds | 1 oz | 3.5 |
| Pistachios | 1 oz | 3 |
| Sunflower seeds | 1 oz | 3 |
| Air-popped popcorn | 3 cups | 3.5 |
Soluble vs insoluble fiber
You will see fiber split into two types, and both matter. Soluble fiber dissolves in water and turns into a gel as it moves through you. That gel is what slows digestion, blunts the rise in blood sugar after a meal, and helps lower cholesterol. Oats, beans, apples, citrus, and barley are good sources.
Insoluble fiber does not dissolve. It adds bulk and helps food move through your gut, which is what keeps you regular. Whole wheat, brown rice, nuts, and the skins of vegetables and fruit carry most of it.
You do not need to track the two separately. Whole plant foods give you a mix of both, so a varied plate covers it for you. According to Mayo Clinic, the practical move is simply to eat a range of plants rather than chase one type.
How much fiber you need per day
Most adults fall well short. The general targets are about 25 grams a day for women and 38 grams a day for men, or roughly 14 grams for every 1,000 calories you eat. The average intake in the United States sits closer to 15 grams, which means a lot of people are getting less than half of what their bodies are built for.
That gap is worth closing. A large body of research links higher fiber intake with lower rates of heart disease, type 2 diabetes, and certain cancers, along with steadier weight over time. A 2019 review in The Lancet found that people who ate the most fiber had meaningfully lower rates of death and chronic disease than those who ate the least.
You do not need to count grams forever. Use the tables above to picture what 25 to 38 grams looks like on a plate, hit it for a couple of weeks until it feels normal, and then let the habit carry you.
How to add more fiber without the bloat
If you jump from 15 grams to 35 overnight, your gut will protest with gas and cramping. The fix is pace. Add 3 to 5 grams every few days and give your system a week or two to adjust between jumps.
Water matters just as much. Fiber works by absorbing water and forming bulk, so without enough fluid it can do the opposite of what you want. Drink through the day as you raise your intake, and the transition stays comfortable. NIDDK makes the same point for anyone using fiber to stay regular.
A few swaps do most of the work. Trade white bread, rice, and pasta for whole-grain versions. Add a half cup of beans or lentils to a soup, salad, or bowl. Keep the skin on your potatoes and apples. Stir a spoonful of chia or ground flax into yogurt or oatmeal. Reach for fruit or a handful of nuts instead of a processed snack. None of these ask you to eat differently, only to pick the version that still has its fiber.
Why fiber does more than fill you up
The reason fiber shows up in almost every set of dietary guidelines is that it touches several systems at once. Each type of benefit traces back to the same simple fact that your body cannot digest it.
In your gut, insoluble fiber adds bulk and pulls water in, which keeps things moving and prevents constipation. Soluble fiber feeds the trillions of bacteria living in your colon, and those bacteria ferment it into compounds that nourish the cells lining your gut. A varied, fiber-rich diet is one of the most reliable ways to support that microbiome, and the research linking gut health to the rest of the body keeps growing.
For your heart, soluble fiber binds to cholesterol in the digestive tract and carries some of it out before it reaches your bloodstream. Over time that can lower LDL, the cholesterol most tied to heart disease. The same gel that slows digestion also blunts the spike in blood sugar after a meal, which is why fiber is a cornerstone of eating for steady energy and lower diabetes risk.
There is a weight angle too, and it runs through all of the above. Food that takes longer to digest keeps you satisfied, and food that feeds your gut and steadies your blood sugar leaves you with fewer sharp cravings between meals. You do not get those effects from a supplement as reliably as you get them from whole foods, because the fiber in a bean or an apple comes packaged with water, vitamins, and the structure that makes you chew. That packaging is part of why whole plant foods outperform isolated fiber powders in most studies.
High-fiber foods and weight loss
Fiber is one of the few things on a label that reliably helps you eat less without trying. Because it slows digestion and adds bulk, a high-fiber meal keeps you full longer than the same calories from refined food, so the next craving arrives later. That is why fiber-rich foods for weight loss show up in almost every sustainable plan.
It pairs especially well with protein. Together they are the two nutrients that do the most to control appetite, which is why a plate built on high-protein meals for weight loss and a serving of beans, vegetables, or whole grains tends to leave you satisfied on fewer calories. For the bigger picture on building meals around both, start with our weight-loss nutrition guide.
Frequently asked questions
What foods have the most fiber?
Legumes top the list by a wide margin. A single cup of cooked navy beans has about 19 grams, split peas about 16, and lentils about 15.5, which is most of a day's target in one serving. After beans, the richest sources are seeds like chia and flax, whole grains such as bulgur and barley, and high-fiber vegetables like artichokes and green peas. Among fruit, raspberries lead with around 8 grams per cup. Building meals around any of these makes your daily goal easy to reach.
How much fiber should I eat per day?
Aim for about 25 grams a day if you are a woman and about 38 grams if you are a man, or roughly 14 grams for every 1,000 calories you eat. Most people in the United States get only about 15 grams, so there is real room to improve. You do not need to count forever. Use a high-fiber food list to learn what the target looks like on a plate, then build the habit until it runs on its own.
What is the difference between soluble and insoluble fiber?
Soluble fiber dissolves in water and forms a gel that slows digestion, steadies blood sugar, and helps lower cholesterol. You find it in oats, beans, apples, and citrus. Insoluble fiber does not dissolve. It adds bulk and helps food move through your gut, which keeps you regular, and it comes from whole wheat, nuts, and the skins of produce. You do not have to track them separately, because eating a variety of whole plant foods gives you both.
Can too much fiber cause problems?
It can if you add it too fast or skip the water. Going from a low-fiber diet to a very high one overnight tends to cause gas, bloating, and cramping while your gut adjusts. The fix is to raise your intake gradually, by a few grams every few days, and to drink enough fluid so the fiber can do its job. At a steady, well-hydrated pace, most people tolerate a high-fiber diet comfortably and feel better for it.
