Raspberries top the list of common high-fiber fruits, packing 8 grams of fiber per cup. But if you count avocados (yes, they’re a fruit), a single medium avocado delivers 10 grams. Either way, both put a serious dent in your daily fiber goal, which works out to roughly 25 grams for women and 38 grams for men on a standard 2,000- to 2,600-calorie diet.
The Highest-Fiber Fruits by Serving
Here’s how the most widely available fruits stack up, based on standard serving sizes:
- Avocado (1 medium): 10 grams
- Raspberries (1 cup): 8 grams
- Pear (1 medium, with skin): 5.5 grams
- Apple (1 medium, with skin): 4.5 grams
- Banana (1 medium): 3 grams
- Orange (1 medium): 3 grams
- Strawberries (1 cup): 3 grams
A few tropical fruits also deserve a mention. Guava is a fiber powerhouse, with nearly 13 grams per 100 grams of fruit, which is more fiber per bite than almost anything else in the produce aisle. Passion fruit packs about 2 grams into a single small fruit, making it surprisingly dense for its tiny size. If you can find fresh guava at your grocery store, it outperforms every fruit on this list gram for gram.
Why Berries Punch Above Their Weight
Berries owe their high fiber counts to all those tiny seeds and their relatively thin, edible skin. Raspberries are the standout, but blackberries are close behind. A cup of either gives you roughly a third of your daily fiber target, which is remarkable for something that also works as a snack or smoothie ingredient. Strawberries, by contrast, come in at just 3 grams per cup. They have fewer seeds per berry and more water content, so you’d need to eat nearly three cups of strawberries to match one cup of raspberries.
The Avocado Advantage
Most people think of avocados as a fat source, and they are, but a whole medium avocado also contains 10 grams of fiber. That’s more than any other single fruit you’re likely to eat in one sitting. The fiber in avocado is a mix of both soluble and insoluble types, though it skews toward insoluble. USDA data shows about 2 grams of soluble fiber and 3.5 to 5.5 grams of insoluble fiber per 100 grams, depending on the variety. California Hass avocados have a more balanced ratio, while the larger Florida variety is heavier on insoluble fiber.
Soluble vs. Insoluble Fiber in Fruit
Not all fiber works the same way in your body. Soluble fiber dissolves in water and forms a gel-like substance during digestion, which helps slow the absorption of sugar and can lower cholesterol. Insoluble fiber doesn’t dissolve. It adds bulk to stool and helps food move through your digestive system more efficiently. Most fruits contain both types, but the ratio varies quite a bit.
Prunes are the soluble fiber champions among fruits, with 4.5 grams of soluble fiber per 100 grams, plus another 3.6 grams of insoluble fiber. Oranges and peaches also lean relatively high in soluble fiber compared to other fruits. On the other end, guava is almost entirely insoluble fiber: nearly 12 grams of insoluble versus just 1.5 grams of soluble per 100 grams. Pineapple is another fruit that’s almost all insoluble fiber, though it has very little fiber overall.
If you’re looking to support gut regularity, fruits high in insoluble fiber (guava, pears, avocado) are your best bet. If you’re focused on blood sugar control or cholesterol, prunes, oranges, and apples offer more soluble fiber per serving.
Skin Makes a Bigger Difference Than You Think
Peeling fruit strips away a surprising amount of fiber. USDA data on peaches shows that eating one with the skin gives you about 2.85 grams of total fiber per 100 grams, while peeling it drops that to 2 grams. The same principle applies to apples and pears, where much of the insoluble fiber lives in the skin. If you’re eating fruit partly for the fiber, leave the peel on whenever the fruit allows it.
Whole Fruit vs. Juice
Juicing removes most of the fiber from fruit. A cup of whole orange segments contains 4.3 grams of fiber, while a cup of orange juice has just 0.7 grams. That’s an 84% loss. The juicing process strips out the pulp and cell walls where fiber is stored, leaving you with mostly sugar and water. Smoothies are a better option than juice because they blend the whole fruit, keeping the fiber intact even as the texture changes.
Fresh vs. Dried Fruit
Drying fruit concentrates its fiber because you’re removing water while leaving everything else behind. A small fresh fig contains about 1 gram of fiber and weighs 40 grams. Dried figs weigh far less per piece but retain the same fiber, so you end up eating more fiber per handful. The same applies to prunes (dried plums), raisins, and dried apricots. The tradeoff is that dried fruit also concentrates sugar and calories, so it’s easy to overdo it. A small portion, roughly a quarter cup, gives you a fiber boost without the calorie load of eating an entire bag.
Easy Ways to Get More Fiber From Fruit
If you’re trying to increase your fiber intake through fruit, the simplest move is to choose raspberries, pears, or avocado more often. Beyond fruit selection, a few habits make a difference. Eat the skin whenever possible. Choose whole fruit over juice. Add berries to yogurt, oatmeal, or cereal, where the fiber from the fruit stacks on top of fiber from grains. Keep dried figs or prunes on hand as a high-fiber snack that doesn’t require refrigeration.
Mixing fruit types across the day also ensures you’re getting both soluble and insoluble fiber. An apple with breakfast and half an avocado at lunch covers both types and puts you close to halfway to your daily goal before dinner.