Calories in white bread (white)
Calories, protein, carbohydrate and fat per 100 g and per serving, from the USDA reference database — plus what actually changes the number on your plate.
Short answer
100 g of white bread (white) contains 266 kcal, with 8.9 g of protein, 49.4 g of carbohydrate and 3.3 g of fat.
A typical serving — 1 slice, about 29 g — is roughly 77 kcal.
That is a fairly calorie-dense food, so portion size matters.
Nutrition facts
| Nutrient | Per 100 g | 1 slice (29 g) |
|---|---|---|
| Calories | 266 kcal | 77 kcal |
| Protein | 8.9 g | 2.6 g |
| Carbohydrates | 49.4 g | 14.3 g |
| Sugars | 5.7 g | 1.6 g |
| Fibre | 2.7 g | 0.8 g |
| Fat | 3.3 g | 1 g |
| Saturated fat | 0.7 g | 0.2 g |
| Cholesterol | 0 mg | 0 mg |
| Sodium | 490 mg | 142 mg |
| Potassium | 126 mg | 37 mg |
| Calcium | 144 mg | 42 mg |
| Iron | 3.6 mg | 1 mg |
| Vitamin C | 0 mg | 0 mg |
| Water | 36 g | 11 g |
Calories per serving
| Serving | Weight | Calories | Protein | Carbohydrates | Fat |
|---|---|---|---|---|---|
| 1 slice | 29 g | 77 | 2.6 g | 14.3 g | 1 g |
Photograph it instead of looking it up
Wellix identifies white bread on your plate, estimates the portion and logs calories, protein, carbs and fat in seconds. Free to start on iPhone and Android.
Calories by weight
Use this table when you know the weight but not the serving:
| Amount | Calories | Protein | Carbohydrates | Fat |
|---|---|---|---|---|
| 25 g | 67 | 2.2 g | 12.4 g | 0.8 g |
| 50 g | 133 | 4.4 g | 24.7 g | 1.7 g |
| 100 g | 266 | 8.9 g | 49.4 g | 3.3 g |
| 150 g | 399 | 13.3 g | 74.1 g | 5 g |
| 200 g | 532 | 17.7 g | 98.8 g | 6.7 g |
| 250 g | 665 | 22.1 g | 123.6 g | 8.3 g |
| 300 g | 798 | 26.6 g | 148.3 g | 10 g |
Where the calories come from
Calories come from three macronutrients: protein and carbohydrate at 4 kcal per gram, fat at 9 kcal per gram. For white bread (white) the split is:
- Protein: 8.9 g × 4 = 35 kcal — 13% of calories
- Carbohydrates: 49.4 g × 4 = 198 kcal — 75% of calories
- Fat: 3.3 g × 9 = 30 kcal — 11% of calories
- Most of the energy in white bread (white) comes from carbohydrate (75% of calories).
- For 200 kcal you can eat about 75 g.
Compare preparations
The same food, prepared differently. Cooking removes water (so calories per 100 g rise), adds fat (so they rise further), or both.
| Preparation | Calories | Protein | Carbohydrates | Fat |
|---|---|---|---|---|
| White bread (white)this page | 266 | 8.9 g | 49.4 g | 3.3 g |
| Whole wheat bread (whole wheat) | 252 | 12.5 g | 42.7 g | 3.5 g |
| Rye bread (rye) | 259 | 8.5 g | 48.3 g | 3.3 g |
| Sourdough bread (sourdough) | 272 | 10.8 g | 51.9 g | 2.4 g |
| Multigrain bread (multigrain) | 265 | 13.4 g | 43.3 g | 4.2 g |
| Pita bread (pita) | 275 | 9.1 g | 55.7 g | 1.2 g |
| Naan (naan) | 291 | 9.6 g | 50.4 g | 5.7 g |
| Bagel (plain) | 264 | 10.6 g | 52.4 g | 1.3 g |
What actually changes the number
A slice of white bread is about 75 kcal, but slices vary from 25 g (thin sandwich) to 50 g (thick-cut bakery), so the range is 65–135 kcal. Bread is one of the few foods where the packet's per-slice figure beats any estimate.
How accurate are these numbers?
The values on this page are reference averages from the USDA FoodData Central database (SR Legacy release), measured on samples of white bread as sold and prepared in the United States. Your portion will differ: produce varies by variety and ripeness, meat by cut and trim, and anything cooked by the fat and water it gained or lost.
For most foods the per-100 g figure is reliable to within about 10%. The larger uncertainty is almost always the weight of what is on your plate and the cooking fat you cannot see — the two things worth checking before you worry about the database.
How accurate are AI calorie counting apps? →
Related foods
More in Grains, rice, pasta and bread →
Frequently asked questions
How many calories are in 100 g of white bread?
100 g of white bread (white) contains 266 kcal (8.9 g protein, 49.4 g carbohydrate, 3.3 g fat), according to USDA reference data.
How many calories are in a serving of white bread?
A typical serving of white bread — 1 slice, about 29 g — has roughly 77 kcal. Weigh your own portion once to see how it compares; serving sizes vary more than the food does.
How much protein is in white bread?
White bread (white): 8.9 g of protein per 100 g, which is moderate. Foods above about 15–20 g per 100 g, or where protein supplies a third or more of the calories, are usually considered high-protein.
What amount of white bread equals 200 kcal?
At 266 kcal per 100 g, about 75 g of white bread equals 200 kcal.
Can I track white bread by taking a photo?
Yes. A photo calorie app like Wellix identifies white bread on the plate and estimates the portion from the image. The estimate is most accurate when you confirm the weight or the count, and tell the app about anything the camera cannot see — cooking oil, butter, dressings and sauces.
Source
Nutrition data: U.S. Department of Agriculture, FoodData Central — SR Legacy, FDC ID 174924: "Bread, white, commercially prepared (includes soft bread crumbs)". Values are per 100 g of edible portion. Serving weights are USDA household measures or typical retail sizes; check the label where one exists. View the USDA record.
Wellix provides general nutrition information and is not medical advice. Nutrition values are reference averages and individual foods vary. Consult a qualified healthcare professional before making significant dietary changes.
Photograph it instead of looking it up
Wellix identifies white bread on your plate, estimates the portion and logs calories, protein, carbs and fat in seconds. Free to start on iPhone and Android.
