How many calories are in bread?

One slice of white bread has 79 calories. Whole wheat is 81 cal/slice, sourdough is 120 cal/slice. Per 100g, bread averages 266 calories. A hamburger bun has about 140 calories.

Is bread good for weight loss?

Bread can fit a weight loss diet - one slice is only 79-81 calories. Choose whole grain for fiber (2g vs 0.6g/slice), which promotes fullness. Watch portions and avoid calorie-dense toppings like butter.

What nutrients are in bread?

White bread provides 2.7g protein and is enriched with iron and B vitamins per slice. Whole wheat adds more fiber (2g), magnesium, and zinc. Both are moderate in sodium (142mg/slice).

Is bread keto-friendly?

Regular bread is not keto-friendly - one slice has 13-15g net carbs. Keto bread alternatives use almond flour or coconut flour with only 1-3g net carbs per slice. Check labels carefully.

Is whole wheat bread healthier?

Yes, whole wheat has more fiber (2g vs 0.6g/slice), B vitamins, iron, and magnesium. Calories are similar to white bread. The extra fiber helps blood sugar control and keeps you fuller longer.

Should I avoid bread to lose weight?

No need to avoid bread for weight loss - one slice is only ~80 calories. Problems come from eating multiple slices with high-calorie toppings. Whole grains, portion control, and healthy toppings make bread diet-friendly.

Does bread have gluten?

Most bread contains gluten (from wheat, barley, or rye). People with celiac disease or gluten sensitivity should choose certified gluten-free bread made from rice, almond, or other gluten-free flours.

How long does bread last?

Store-bought bread lasts 5-7 days at room temperature, or 3 months frozen. Homemade bread lasts 3-4 days. Refrigeration dries bread out - freeze instead for longer storage.

Which bread has the lowest calories?

Light or thin-sliced breads have 40-50 calories per slice. Regular bread is 70-80 cal/slice. Sourdough and artisan breads are higher (100-120 cal). Check serving sizes - some slices are simply smaller.

How much bread should I eat per day?

2-4 slices of whole grain bread daily (160-320 calories) fits most diets. The Dietary Guidelines suggest 6 oz of grains daily - 2 slices equals about 2 oz. Balance with other grain sources.

All Foods

Calories in Bread

USDA Verified · FDC 174924 · Jan 2026

79 calories

per 1 slice white bread (30g)

Protein

49g

Carbs

Fat

2.7g

Fiber

Per 100g as prepared

Serving Sizes & Calories

Serving Size	Weight	Calories
1 slice white breadStandard	30g	79 cal
1 slice whole wheat bread	43g	81 cal
1 slice sourdough	47g	120 cal
1 slice rye bread	32g	83 cal
1 hamburger bun	52g	140 cal
1 hot dog bun	43g	120 cal
100g	100g	266 cal