A typical serving of dark chocolate (1 oz (about 3 squares), 28 g) has about 170 calories. Per 100 g: 598 kcal, 7.8 g protein, 45.9 g carbs, 42.6 g fat. The same 100 g carries 10.9 g of fiber and 24 g of sugar. Most of the energy comes from fat.
| Serving | Weight | Calories |
|---|---|---|
| 1 oz (about 3 squares) | 28 g | 170 kcal |
| 1 bar (3.5 oz) | 101 g | 604 kcal |
| 100 g | 100 g | 598 kcal |
Higher cacao does not mean lighter: 70-85% dark runs 598 kcal per 100 g, more than milk chocolate. On the energy-density scale, 598 kcal per 100 g puts dark chocolate at the very high end. Fiber is the standout at 10.9 g per 100 g, which slows a portion down more than the calorie count suggests.
A typical serving (1 oz (about 3 squares), 28 g) has about 170 calories, and 100 g has 598 kcal. Calories scale with weight, so double the portion means double the number.
There are 7.8 g of protein in 100 g of dark chocolate, which works out to about 2.2 g per serving (1 oz). Treat it as an energy source rather than a protein source.
Sugar comes to 24 g per 100 g, so 1 oz (28 g) delivers roughly 7 g. That sugar is already counted inside the calorie figures on this page.
Every value on this page comes from USDA FoodData Central, entry 170273 (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 170273 (SR Legacy). Serving calories are computed from the per-100-g values.
