The lowest calorie breads on the market come in at 30 to 35 calories per slice, roughly half the calories of a standard slice of white bread. Brands like Healthy Life, Royo, and Bettergoods all produce slices in this range, making them popular picks for people counting calories or managing carbs.
The Lowest Calorie Breads by Brand
At the very bottom of the calorie scale, a few brands stand out. Royo bread runs 30 to 35 calories per slice. Bettergoods (Walmart’s store brand) comes in at 35 calories. Healthy Life, also widely available at Walmart, offers an entire lineup at 35 calories per slice in flavors including whole wheat, white, Italian, sourdough, and honey wheat.
A step up from there, Schmidt 647 and D’Italiano reduced calorie bread both land at 40 calories per slice. Dave’s Killer Bread thin-sliced variety runs about 70 calories, which is still below a standard slice of whole wheat bread at around 80 calories. For context, a typical slice of commercial white bread has about 67 calories, so the ultra-low-calorie options cut that number nearly in half.
How Bread Gets to 35 Calories
Bread that low in calories isn’t just regular bread with smaller slices, though thinner slicing does play a role. Manufacturers use a combination of techniques to strip out digestible carbohydrates and replace them with ingredients your body doesn’t fully absorb.
The primary strategy is swapping out flour, starch, and sugars for dietary fiber and protein. Fibers like resistant starch, inulin, and oat or wheat fiber act as bulking agents. They give the bread its structure and volume without contributing usable calories. Protein sources like wheat protein concentrate or soy protein isolate also replace some of the flour, adding substance while keeping the calorie count down. When sugar is removed, manufacturers sometimes add high-intensity sweeteners or sugar alcohols to maintain a hint of sweetness.
These substitutions create challenges in the bakery. Doughs with high protein and low sugar don’t rise the same way, so manufacturers increase yeast levels to generate enough gas for a proper loaf. The baking time runs about 20% longer than conventional bread. Higher water content helps with texture but also makes the bread more prone to mold, which is why many low-calorie breads contain additional preservatives like calcium propionate.
What Low-Calorie Bread Tastes Like
If you’ve never tried a 35-calorie bread, expect a noticeably thinner, lighter slice. The texture tends to be softer and slightly more airy than standard bread. Some people find it works perfectly for sandwiches and toast, while others notice a faint aftertaste from the fiber additives or a texture that feels less substantial. Toasting generally improves the experience, firming up the slice and bringing out more flavor.
The fiber content is worth paying attention to for a different reason: it can cause bloating or gas if you’re not used to eating much fiber. Starting with one or two slices a day and increasing gradually helps your digestive system adjust.
How Bread Types Compare
Bread calories vary widely depending on the type, and not all “healthy” breads are low in calories. Here’s how the main categories stack up per slice:
- Ultra-low-calorie brands (Royo, Healthy Life, Bettergoods): 30 to 35 calories
- Reduced-calorie brands (Schmidt 647, D’Italiano): 40 calories
- Standard white bread: 67 calories
- Sprouted grain bread: 71 calories
- Whole wheat bread: 80 calories
- Multigrain oat bread: 100 calories
- Flaxseed bread: 110 calories
- Whole wheat sourdough: 120 calories
- Whole-grain gluten-free bread: 140 calories
- Multigrain rye bread: 140 calories
The difference between the top and bottom of this list is striking. Two slices of a 35-calorie bread total 70 calories, which is half of what you’d get from a single slice of multigrain rye. For someone eating sandwiches daily, that swap alone saves hundreds of calories per week.
Keto Bread Is Not Always Low Calorie
Keto breads and low-calorie breads overlap but aren’t the same thing. Keto bread is designed to minimize net carbohydrates, which it does by loading up on fiber and fat. Some keto breads, like Royo at 30 to 35 calories, happen to be very low calorie as well. Others are not. Kroger’s keto bread buns, for example, run 100 calories each. The fat content that makes bread keto-friendly also adds calories, so always check the label rather than assuming “keto” means “low calorie.”
Choosing Between Calories and Nutrition
The lowest calorie bread isn’t necessarily the most nutritious. A 35-calorie slice achieves its number partly through fiber and protein, which is genuinely beneficial, but also through thinner slices and engineered formulations. Sprouted grain bread at 71 calories per slice delivers vitamins, minerals, and naturally occurring fiber from whole sprouted grains. Whole wheat bread at 80 calories provides a solid nutritional profile without any special processing.
If your goal is purely to reduce calorie intake, the 35-calorie options are hard to beat. If you’re looking for a balance of nutrition and moderate calories, sprouted or whole wheat bread gives you more micronutrients per slice at a modest calorie cost. For most people, the best choice depends on whether you’re optimizing for a calorie budget or for overall diet quality.