How much fiber is in whole wheat bread?
Whole wheat bread has 1.9 grams of fiber in 1 slice (32 grams), according to USDA FoodData Central. That is 7% of the Daily Value, below the 10% the FDA requires before a label can call a food a good source of fiber. Per 100 grams, whole wheat bread has 6 grams of fiber.
1.9gof fiber in 1 slice
8% of a 25 gram day
Fiber in whole wheat bread by serving size
| Serving | Weight | Fiber |
|---|---|---|
| 1 oz | 28.4g | 1.7g |
| 1 slice | 32g | 1.9g |
| 100 grams | 100g | 6g |
How whole wheat bread compares with other grains
Whole wheat bread ranks 5 of 8 grains in this library, by fiber in one serving.
- Brown rice3.2g
- Pasta2.2g
- Whole wheat bread1.9g
- Popcorn1.2g
- White bread0.8g
Each bar is one serving: brown rice, 1 cup, cooked; pasta, 1 cup spaghetti, cooked; whole wheat bread, 1 slice; popcorn, 1 cup, air-popped; white bread, 1 slice.
More than twice white bread
A slice of whole wheat bread has 1.9 grams of fiber, against 0.8 for white. Breads vary by brand, so check the label on yours.
Two slices and a filling
Two slices with 2 tablespoons of peanut butter is 5.4 grams of fiber. Add a sliced banana and it is 8.5.
More fiber alongside whole wheat bread
- Black beans: 15 grams in 1 cup, cooked
- Lentils: 15.6 grams in 1 cup, cooked
- Broccoli: 2.4 grams in 1 cup, chopped
Not sure what your daily number should be? The fiber calculator works it out from your age and sex.
Questions about fiber in whole wheat bread
- How much fiber is in whole wheat bread?
- Whole wheat bread has 1.9 grams of fiber in 1 slice, which weighs 32 grams. The number comes from USDA FoodData Central.
- Is whole wheat bread high in fiber?
- One serving, 1 slice, has 1.9 grams. That is 7% of the Daily Value, below the 10% the FDA requires before a label can call a food a good source of fiber. Whole wheat bread ranks 5 of 8 grains in this library by fiber per serving.
- How much fiber is in 100 grams of whole wheat bread?
- 6 grams of fiber per 100 grams. The largest size USDA lists, 1 slice, weighs 32 grams and has 1.9 grams of fiber.
- How many slices of whole wheat bread would it take to reach 25 grams of fiber?
- About 13.2, at 1.9 grams each. Most people reach 25 grams by mixing several foods across the day.
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Source: USDA FoodData Central, Bread, whole-wheat, commercially prepared, retrieved October 8, 2026. Label terms follow the FDA's 28 gram Daily Value for fiber.