Food calories · USDA data
Calories in a slice of whole wheat bread
81 calories
in 1 slice, 32 g
- Protein
- 4 g
- Carbs
- 13.7 g
- Fat
- 1.1 g
- Fiber
- 1.9 g
A slice of whole wheat bread has 81 calories. That is USDA's figure for 1 slice, which weighs 32 g. Per 100 g, whole wheat bread has 252 calories.
Most of its calories (68%) come from carbohydrate, with protein next at 20%.
It takes 40 g of whole wheat bread to reach 100 calories, which is about 1.2 × 1 slice.
Calories by portion
| Portion | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 slice | 32 g | 81 | 4 g | 13.7 g | 1.1 g |
| 1 oz | 28.3 g | 71 | 3.5 g | 12.1 g | 1 g |
| 100 g | 100 g | 252 | 12.5 g | 42.7 g | 3.5 g |
Portion weights are USDA's own. Your whole wheat bread may weigh more or less; for an exact number, weigh it and enter the grams in the food calorie lookup.
Where the calories come from
- Protein: 20% of calories (12.5 g per 100 g)
- Carbohydrate: 68% (42.7 g per 100 g, of which 6 g fiber)
- Fat: 12% (3.5 g per 100 g)
Shares use the general factors of 4 calories per gram of protein and carbohydrate and 9 per gram of fat, so they can differ a little from USDA's calorie figure. Daily Values are the FDA's adult Daily Values.
Compared with similar foods
Weight for weight, whole wheat bread has the fewest calories of these four (252 per 100 g) and multigrain bread the most (265).
| Per 100 g | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Slice of whole wheat bread | 252 | 12.5 g | 42.7 g | 3.5 g |
| Rye bread | 259 | 8.5 g | 48.3 g | 3.3 g |
| Bagel | 264 | 10.6 g | 52.4 g | 1.3 g |
| Multigrain bread | 265 | 13.4 g | 43.3 g | 4.2 g |
Work out your own portion
The food calorie lookup has 3,070 foods. Pick a portion or type a weight in grams or ounces, then add foods to a plate to see the total for a meal. To see how a meal fits your day, the calorie calculator works out your daily calories.
Questions people ask
How many calories is in a slice of whole wheat bread?
A slice of whole wheat bread has 81 calories. USDA weighs 1 slice at 32 g, and whole wheat bread has 252 calories per 100 g.
How much protein does a slice of whole wheat bread have?
1 slice (32 g) has 4 g of protein, 8% of the 50 g Daily Value. Per 100 g it is 12.5 g.
How many carbs does a slice of whole wheat bread have?
1 slice has 13.7 g of carbohydrate, including 1.9 g of fiber, and 1.1 g of fat.
Source: USDA FoodData Central, SR Legacy (2018). USDA entry: Bread, whole-wheat, commercially prepared (FDC ID 172688). Values are averages; a packaged food's label may differ.