How Many Calories Are in One Slice of Baked Bread?

November 6, 2025 •

4 min read

A standard slice of commercially prepared white bread contains approximately 67 to 83 calories, though this can vary significantly by brand and slice size. Understanding how many calories are in one slice of baked bread is a vital part of managing your intake and making informed dietary choices.

Quick Summary

The calorie count for a slice of bread varies based on the type, size, and ingredients. Common types range from 65-175 calories, with whole grain and sprouted options often offering more nutrients and fiber. Knowing the nutritional differences helps in selecting healthier options for your diet.

Key Points

Calorie Variation: The number of calories in one slice of baked bread differs significantly by type, with white bread generally having fewer calories per slice due to its lighter weight compared to denser whole wheat or sourdough varieties.
Whole Grains Offer More Fiber: Whole grain bread, including whole wheat and sprouted options, provides more dietary fiber, which aids in digestion and helps promote a feeling of fullness longer than refined white bread.
Check the Label for Serving Size: Because slice weight varies between brands, relying on the 'per slice' calorie count can be misleading. Always check the nutrition label for the serving size in grams for the most accurate information.
Toppings Add Up: The majority of calories in a bread-based meal often come from the spreads and fillings. Choosing lean proteins and fresh vegetables over heavy sauces and butters is a crucial step for calorie control.
Sourdough and Sprouting Benefits: The fermentation process in sourdough can improve digestibility and nutrient absorption, while sprouting grains can increase nutrient availability and lower the glycemic impact.

Understanding the Calories in Different Bread Types

When it comes to bread, not all slices are created equal. The caloric content depends heavily on the type of flour used, the ingredients added, and the weight of the individual slice. For example, a commercially prepared slice of white bread often falls between 65 and 85 calories. However, a dense, artisanal sourdough slice could contain significantly more due to its heavier weight. Whole grain varieties tend to pack more fiber and nutrients but can have similar or slightly higher calorie counts than white bread, depending on the producer and serving size.

White Bread vs. Whole Wheat Bread

White bread is made from refined flour, which means the bran and germ of the wheat kernel have been removed. This process results in a softer texture and a longer shelf life, but it also strips the flour of much of its fiber and nutrient content. Manufacturers often enrich the bread by adding back certain vitamins and minerals, but not the fiber. Consequently, white bread is digested quickly, which can cause spikes in blood sugar. Whole wheat bread, conversely, uses flour from the entire grain kernel, providing more fiber, protein, and a broader range of nutrients, including manganese and selenium.

The Rise of Sourdough and Sprouted Grains

Sourdough bread uses a natural fermentation process involving wild yeast and bacteria. This process can make the bread easier to digest and can also reduce the phytic acid content, which improves the absorption of certain minerals. A typical slice of sourdough ranges from 90 to 175 calories, influenced by its density and size. Sprouted grain breads, such as Ezekiel bread, are made from whole grains and legumes that have begun to sprout. This process can increase the nutrient availability and reduce the carbohydrate content compared to other breads. Sprouted grain breads are often dense and rich in fiber and protein.

Factors That Influence Calorie Count

Serving Size and Weight: A larger or thicker slice will have more calories, regardless of the bread type. Always check the nutrition label for the specific serving size in grams, as this provides a more accurate picture than a simple 'per slice' figure, which can vary wildly between brands.
Added Ingredients: Many store-bought breads contain added sugars, syrups, and oils to improve flavor and texture. These can significantly increase the calorie count. Some seeded and nut-based breads, while nutritious, can also be higher in calories due to the energy-dense additions.
Processing Method: The fermentation process in sourdough and the sprouting process in sprouted grain breads affect the final nutrient profile and calorie density. Homemade bread also has a different calorie profile than store-bought, as the baker has full control over the ingredients.

Comparison Table: Calories in One Slice of Bread


Bread Type	Approx. Slice Weight	Average Calories per Slice	Key Nutritional Note
White Bread	25-38 grams	65-85 calories	Refined flour, lower fiber
Whole Wheat Bread	33-46 grams	70-95 calories	Whole grain, higher fiber
Sourdough Bread	32-64 grams	90-175 calories	Fermented, can be easier to digest
Sprouted Grain Bread	34-46 grams	80-110 calories	Sprouted grains and legumes, higher fiber

How to Choose the Healthiest Bread for Your Diet

Making a healthy choice involves more than just checking the calorie count. Focusing on the nutrient density and ingredients is crucial. Here are some tips for incorporating bread healthily:

Prioritize Whole Grains: Look for breads that list '100% whole grain' or 'whole wheat flour' as the first ingredient. These options provide more fiber, which aids digestion and promotes satiety.
Pair Wisely: The biggest calorie trap with bread often lies in what you put on it. Opt for lean protein fillings like grilled chicken or tuna, and load up on vegetables instead of heavy spreads like mayonnaise or excessive amounts of butter.
Consider Glycemic Index: Breads with a lower glycemic index, like sourdough, cause a slower, more gradual rise in blood sugar. This can help you feel full longer and avoid energy crashes. For more detailed information on different bread types and their nutritional value, you can explore reliable sources like Healthline's guide on the healthiest breads.
Look for Minimal Ingredients: A simpler ingredient list is often a sign of a healthier bread. Avoid products with excessive added sugars (often ending in '-ose') and preservatives.

Conclusion: Making Informed Choices About Bread

Ultimately, there is no single answer to the question of how many calories are in one slice of baked bread, as it varies widely based on the specific type, size, and ingredients. A typical slice of commercial white bread contains around 75 calories, while whole wheat and sourdough can range from 80 to over 150 calories per slice due to differences in weight and composition. The key is to look beyond the basic calorie number and consider the overall nutritional value. Prioritizing whole grains, managing portion sizes, and being mindful of your toppings are all strategies for enjoying bread as a healthy and satisfying part of your diet.

Frequently Asked Questions

Not necessarily. While often seen as a healthier option, whole wheat bread can sometimes have a similar or slightly higher calorie count per slice compared to white bread, largely because whole grain slices are often denser and heavier.

No, toasting bread does not significantly alter its calorie content. The process removes water, which may make the slice feel lighter, but the macronutrient content and overall calories remain the same.

The calorie count for sourdough bread varies based on slice size and weight. A small, thin slice may have around 90-100 calories, while a larger, denser slice could contain 175 calories or more.

Some sprouted grain breads or thinly sliced low-carb specialty loaves can be the lowest in calories. However, focusing on high-fiber options like 100% whole grain or sprouted grain bread is often more beneficial for health and satiety, even if the calorie count is similar to white bread.

No single food is inherently fattening. Consuming more calories than you burn will lead to weight gain. When consumed in moderation and paired with healthy toppings and fillings, whole grain bread can be part of a balanced diet and even support weight management due to its fiber content.

To reduce calories, use a single slice of whole grain bread and fill it with lean protein and plenty of vegetables. You can also use lower-calorie spreads like mustard instead of mayonnaise or butter.

Homemade bread often has a simpler ingredient list and may be higher in moisture, which can affect the final calorie density. Store-bought bread often contains added ingredients like stabilizers, sugars, and oils, which can influence the calorie count.