How Many Calories in a Slice of Bread?

A standard slice of white bread contains about 79 calories. Whole wheat comes in slightly lower at around 69 calories per slice, while sourdough sits at about 93 due to its denser texture and larger slices.

Bread gets a bad reputation in diet culture, but the calorie difference between types is smaller than most people think. The real calorie bomb is usually what you put on it, not the bread itself.

🍞 Calories by Bread Type

🌾 Is Whole Wheat Bread Actually Better?

Whole wheat bread contains the entire grain kernel (bran, germ and endosperm), while white bread uses only the endosperm. This gives whole wheat nearly triple the fiber (1.9g vs 0.6g per slice), more B vitamins and more minerals. The practical difference is that whole wheat keeps you fuller longer and produces a slower blood sugar rise.

Watch out for misleading labels though. Many breads marketed as "wheat" or "multigrain" are mostly refined flour with a bit of whole grain added for color. Check the ingredients list. If it says enriched wheat flour first, thats white bread in disguise.

🥪 How Many Calories in a Sandwich?

Two slices of bread at 140 to 160 calories is a modest base for a meal. But a tablespoon of butter adds 102 calories, mayo adds 94, and cheese adds 70 to 110 per slice. A sandwich with generous spreads and fillings can easily hit 600 to 800 calories, with the bread accounting for less than 25% of that total.

📉 How to Cut Bread Calories in Half

Thin-sliced bread runs about 40 to 50 calories per slice, which instantly cuts your sandwich bread calories nearly in half. Open-faced sandwiches do the same thing with regular bread. Whole wheat also offers better satiety thanks to the extra fiber, so you are less likely to reach for a second sandwich an hour later.

🍞 Sliced Bread Was Actually Revolutionary

"The greatest thing since sliced bread" is not just a saying. When Otto Rohwedder invented the bread-slicing machine in 1928, the baking industry predicted it would fail because sliced bread would go stale faster. Instead, bread sales jumped 2,000% within weeks. The US government briefly banned sliced bread in 1943 to save wax paper and metal, but the ban lasted only two months because public outrage was so intense.