How much fiber is in a potato?
Potatoes have 3.8 grams of fiber in 1 medium potato, baked with skin (173 grams), according to USDA FoodData Central. That is 14% of the Daily Value, which the FDA's label rules call a good source of fiber. Per 100 grams, potatoes have 2.2 grams of fiber.
3.8gof fiber in 1 medium potato, baked with skin
15% of a 25 gram day
Fiber in potatoes by serving size
| Serving | Weight | Fiber |
|---|---|---|
| 1 potato small | 138g | 3g |
| 1 potato medium | 173g | 3.8g |
| 1 potato large | 299g | 6.6g |
| 100 grams | 100g | 2.2g |
How potatoes compare with other vegetables
Potatoes rank 2 of 13 vegetables in this library, by fiber in one serving.
- Green beans4g
- Potato3.8g
- Sweet potato3.8g
- Corn2.5g
- Broccoli2.4g
Each bar is one serving: green beans, 1 cup, cooked; potato, 1 medium potato, baked with skin; sweet potato, 1 medium sweet potato, baked; corn, 1 medium ear, cooked; broccoli, 1 cup, chopped.
The number includes the skin
USDA's 3.8 grams is for a medium baked potato eaten with its skin. This entry counts flesh and skin together.
Top it with beans
A baked potato with half a cup of black beans is 11.3 grams of fiber. With a cup of chopped broccoli it is 6.2.
More fiber alongside potatoes
- Chickpeas: 12.5 grams in 1 cup, cooked
- Quinoa: 5.2 grams in 1 cup, cooked
- Lentils: 15.6 grams in 1 cup, cooked
Not sure what your daily number should be? The fiber calculator works it out from your age and sex.
Questions about fiber in potatoes
- How much fiber is in a potato?
- Potatoes have 3.8 grams of fiber in 1 medium potato, baked with skin, which weighs 173 grams. The number comes from USDA FoodData Central.
- Are potatoes high in fiber?
- One serving, 1 medium potato, baked with skin, has 3.8 grams. That is 14% of the Daily Value, which the FDA's label rules call a good source of fiber. Potatoes rank 2 of 13 vegetables in this library by fiber per serving.
- How much fiber is in 100 grams of potatoes?
- 2.2 grams of fiber per 100 grams. The largest size USDA lists, 1 potato large, weighs 299 grams and has 6.6 grams of fiber.
- How many potatoes would it take to reach 25 grams of fiber?
- About 6.6, at 3.8 grams each. Most people reach 25 grams by mixing several foods across the day.
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Source: USDA FoodData Central, Potatoes, baked, flesh and skin, without salt, retrieved October 8, 2026. Label terms follow the FDA's 28 gram Daily Value for fiber.