QUICK ANSWER
How many calories are in white bread?
The selected commercial white bread provides 266 kcal per 100 g. Scale from the edible portion and keep other states separate.
266 kcal / 100 gNutrition values describe a reference food state, not every individual item. Variety, water content, preparation and portion weight can change the estimate.
THE NUMBERS
White bread nutrition facts per 100 g
The values below use the reference state shown at the top of this page. Keeping one gram basis makes it easier to compare foods before translating the values to the portion you actually ate.
- Calories
- 266 kcal
- Protein
- 8.85 g
- Carbohydrate
- 49.4 g
- Fat
- 3.33 g
- Fibre
- 2.7 g
- Sodium
- 490 mg
- Iron
- 3.61 mg
- Calcium
- 144 mg
Source: USDA FoodData Central SR Legacy record 174924. Values may be rounded for readability.
SERVING SIZE
Calories by portion and serving weight
Words such as “small,” “medium,” “half” and “one piece” are convenient but imprecise. Grams make the estimate reproducible, particularly when natural foods vary in size.
MACROS
Carbohydrate, protein and fat explained
Protein
8.85 g per 100 g. From Bread, white, commercially prepared (includes soft bread crumbs).
Carbohydrate
49.4 g per 100 g. From Bread, white, commercially prepared (includes soft bread crumbs).
Fat
3.33 g per 100 g. From Bread, white, commercially prepared (includes soft bread crumbs).
MORE THAN CALORIES
Fibre, vitamins and minerals
One food does not need to provide every nutrient. These are the characteristics most useful for understanding where white bread fits in a varied eating pattern.
Sodium
490 mg per 100 g in the selected USDA record.
Iron
3.61 mg per 100 g in the selected USDA record.
Calcium
144 mg per 100 g in the selected USDA record.
Folate
111 µg per 100 g in the selected USDA record.
FOOD STATE MATTERS
How preparation changes the nutrition estimate
A reliable calorie entry should describe the food you actually ate—not merely a food with a similar name.
Commercial white bread
Selected reference.
Whole-wheat or multigrain
Use the exact loaf label or matching record.
Sourdough or artisan
Use the product-specific label because recipes and slice weights vary.
Toast or sandwich
Bread weight remains the base; add butter, spreads and fillings separately.
PRACTICAL CONTEXT
How white bread can fit different goals
There is no universal “good” or “bad” food. Portion, frequency, the rest of the meal, preferences and individual health needs all matter.
Portion math
At 266 kcal per 100 g, the 20 g example is 53.2 kcal.
Fibre check
The selected record lists 2.7 g fibre per 100 g.
Protein check
The selected record lists 8.85 g protein per 100 g.
Best logging move
Use the actual slice weight when possible and treat toppings or sandwich fillings as separate foods.
QUALITY & SAFETY
How to choose, store and prepare it
Store
Keep the loaf sealed according to package directions.
After opening or cooking
Use clean hands or utensils when removing slices.
Prepare
Discard bread with visible mould rather than trimming the affected area.
Safety boundary
The nutrient record does not establish storage duration or allergen advice; follow package and current local guidance.
PHOTO LOGGING
How to log white bread more accurately
A food photo can suggest the ingredient, but it cannot always reveal exact weight, hidden oil or preparation details. These checks turn an image guess into a better estimate.
- 01
Match the exact reference state: Bread, white, commercially prepared (includes soft bread crumbs).
- 02
Use edible grams. Calories are scaled from the selected per-100-g record; named portion weights come from the same local USDA record.
- 03
Log oil, sauce, sweetener, salt and recipe ingredients separately.
- 04
Use a separate record when preparation changes the food state.
COMMON QUESTIONS
White bread calorie and nutrition questions
How many calories are in 100 g of bread?
266 kcal in the selected Bread, white, commercially prepared (includes soft bread crumbs) record.
How much fibre is in bread?
2.7 g per 100 g in the selected record.
Which bread state does this page use?
Bread, white, commercially prepared (includes soft bread crumbs). Preparation and edible state are part of the answer.
Is this the value for every type of bread?
No. It is a commercially prepared white-bread reference; other breads need their own label or record.
How are the portion calories calculated?
Each portion is scaled from 266 kcal per 100 g. Named portion weights come from the selected source record.
KEEP EXPLORING
Related food guides
SOURCES & METHOD
Where these numbers come from
Bread, white, commercially prepared (includes soft bread crumbs), per 100 g edible portion. Numeric nutrition and named-portion claims use the nutrition-reviewed local USDA record. Preparation notes cover the common USDA forms of this food. The nutrient record does not establish storage duration, clinical advice or food-safety limits; use package directions and current authoritative guidance where relevant.
Open USDA FoodData Central SR Legacy record 174924 ↗Page reviewed 26 August 2026. We show the food state, gram basis and source record so readers can check the estimate instead of treating one number as universally exact.