A typical serving of rye bread (1 slice, snack-size, 7 g) has about 18 calories. Per 100 g: 259 kcal, 8.5 g protein, 48.3 g carbs, 3.3 g fat. The same 100 g carries 5.8 g of fiber and 3.9 g of sugar. Most of the energy comes from carbohydrate.
| Serving | Weight | Calories |
|---|---|---|
| 1 slice, snack-size | 7 g | 18 kcal |
| 1 slice, thin | 25 g | 65 kcal |
| 1 slice, regular | 32 g | 83 kcal |
| 1 oz | 28 g | 74 kcal |
| 100 g | 100 g | 259 kcal |
Dense and tangy, with slightly more fiber per slice than standard white. On the energy-density scale, 259 kcal per 100 g puts rye bread at the high end. Fiber is the standout at 5.8 g per 100 g, which slows a portion down more than the calorie count suggests.
A typical serving (1 slice, snack-size, 7 g) has about 18 calories, and 100 g has 259 kcal. Calories scale with weight, so double the portion means double the number.
There are 8.5 g of protein in 100 g of rye bread, which works out to about 0.6 g per serving (1 slice). Treat it as an energy source rather than a protein source.
There are 48.3 g of carbohydrate per 100 g of rye bread, or about 3 g in 1 slice (7 g).
Every value on this page comes from USDA FoodData Central, entry 172684 (SR Legacy). Serving figures are converted from the per-100-g data, so rounding can shift a total by a calorie or two.
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Get JoulesA note on accuracy: calculators like this one provide estimates based on population-level formulas — your real needs vary with genetics, muscle mass, medical conditions, and more. Results are for information only and are not medical advice, a diagnosis, or a prescription. Talk to a doctor or registered dietitian before making significant changes to your diet or exercise, especially if you have a health condition, are pregnant, or are under 18.
Nutrition data: USDA FoodData Central, FDC ID 172684 (SR Legacy). Serving calories are computed from the per-100-g values.
