How much fiber is in bananas?
A medium banana (4.2 oz, 118 g) has 2 g of fiber, 7% of the Daily Value. A small banana has 1.7 g and an extra large one 2.6 g. Per 3.5 oz (100 g): 1.7 g.
Numbers are for the USDA entry Bananas, ripe and slightly ripe, raw. Other forms are compared below.
Fiber in bananas by size and measure
| Measure | Weight | Fiber | Calories | % DV |
|---|---|---|---|---|
| 1 cup (mashed) | 7.9 oz (225 g) | 3.8 g | 218 calories | 14% |
| 1 cup (sliced) | 5.3 oz (150 g) | 2.5 g | 146 calories | 9% |
| 1/2 cup | 2.6 oz (75 g) | 1.3 g | 73 calories | 5% |
| 1 extra large | 5.4 oz (152 g) | 2.6 g | 147 calories | 9% |
| 1 large | 4.8 oz (136 g) | 2.3 g | 132 calories | 8% |
| 1 medium | 4.2 oz (118 g) | 2 g | 114 calories | 7% |
| 1 banana peeled | 4.1 oz (115 g) | 2 g | 112 calories | 7% |
| 1 small | 3.6 oz (101 g) | 1.7 g | 98 calories | 6% |
| 1 extra small | 2.9 oz (81 g) | 1.4 g | 79 calories | 5% |
| 1 oz | 28 g | 0.48 g | 27 calories | 2% |
| 100 g | 3.5 oz | 1.7 g | 97 calories | 6% |
Weights are the household measures USDA lists for this exact food. % DV uses the FDA Daily Value of 28 g.
Fiber per calorie
Bananas give 1.8 g of fiber per 100 calories. The Daily Value for fiber is 28 g.
Raw, cooked and other forms
Per 100 g, the 2 USDA entries below range from 1.7 g in bananas, ripe and slightly ripe, raw to 1.8 g in banana, baked.
| USDA entry | Per 100 g | Per serving |
|---|---|---|
| Bananas, ripe and slightly ripe, raw | 1.7 g | 2 g per 1 medium (118 g) |
| Banana, baked | 1.8 g | 2.5 g per 1 banana (140 g) |
Each row is a separate USDA entry with its own household measure. A dash means USDA lists no comparable measure for that entry.
How bananas compare with other fruits
Among the 43 fruits people look up most, bananas rank 19th for fiber per 3.5 oz (100 g) and 23rd per typical serving.
| # | Food | Serving | Per serving | Per 100 g |
|---|---|---|---|---|
| 1 | Passion fruit | 1 cup, 236 g | 24.5 g | 10.4 g |
| 2 | Prunes | 1 oz, 28.3 g | 2 g | 7.1 g |
| 3 | Avocado | 1 fruit (without skin and seed), 136 g | 9.2 g | 6.8 g |
| … | ||||
| 11 | Kiwi fruit | 1 fruit, 75 g | 2.2 g | 3 g |
| … | ||||
| 16 | Orange | 1 fruit, 140 g | 2.8 g | 2 g |
| 17 | Clementine | 1 fruit, 85 g | 1.5 g | 1.8 g |
| 18 | Dragon fruit | 1 fruit, 75 g | 1.4 g | 1.8 g |
| 19 | Bananas | 1 medium, 118 g | 2 g | 1.7 g |
| 20 | Papaya | 1 cup 1" pieces, 145 g | 2.5 g | 1.7 g |
| 21 | Mango | 1 cup pieces, 165 g | 2.6 g | 1.6 g |
The list is the 43 fruits most asked about in US searches for protein, calories, carbs, sugar and fiber, each as one USDA entry with its usual serving. Rows in between are skipped (…).
Keep exploring
Sources
Nutrients and household measures: USDA FoodData Central, April 2026 release (accessed 2026-10-14)
- Bananas, ripe and slightly ripe, raw: Bananas, ripe and slightly ripe, raw, FDC ID 1105314 (Foundation Foods, published 2020-04-01) · full nutrition facts
- Banana, baked: Banana, baked, FDC ID 2709225 (FoodData Central survey (FNDDS) 2024-10-31)
Comparison foods:
- Passion fruit: Passion-fruit, (granadilla), purple, raw, FDC ID 169108
- Prunes: Plums, dried (prunes), uncooked, FDC ID 168162
- Avocado: Avocados, raw, California, FDC ID 171706
- Kiwi fruit: Kiwi fruit, raw, FDC ID 2709239
- Orange: Oranges, raw, navels, FDC ID 746771
- Clementine: Clementine, raw, FDC ID 2709164
- Dragon fruit: Dragon fruit, FDC ID 2709234
- Papaya: Papayas, raw, FDC ID 169926
- Mango: Mangos, raw, FDC ID 169910
How we calculate: every amount is the USDA value per 3.5 oz (100 g) scaled to the gram weight USDA lists for that measure. 1 oz = 28.35 g and 1 lb = 453.6 g. Daily Values: FDA, 21 CFR 101.9, for adults and children 4 years and older. A dash (—) means USDA reports no value. How we verify.