Dark chocolate: calories and nutrition facts
Calories in dark chocolate per 100 g and per typical portion, from the MacroLab food catalog.
539kcal per 100 g
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To burn these 539 calories:
- 126minWalking (5 km/h)
- 53minRunning (8 km/h)
- 65minCycling (16–19 km/h)
- 73minSwimming
Times use the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
Calories per portion
Common portions from the MacroLab catalog, next to the 100 g reference.
| Portion | kcal |
|---|---|
| 100 g | 539 |
| 1 piece (5 g) | 27 |
Can dark chocolate make you gain weight?
At 539 kcal per 100 g, this is a food with high energy density: just 19 g gives 100 kcal.
Calories add up fast in a small volume, so measuring helps: 100 g already has 539 kcal.
No single food makes you gain weight. What matters is your total calories over days and weeks compared with what you burn.
Dark chocolate vs other foods in “Sweets and snacks”
It has 43% more calories than the average food in “Sweets and snacks” (377 kcal per 100 g).
| Per 100 g | This food | Group average |
|---|---|---|
| Energy | 539 kcal | 377 kcal |
Related foods
Frequently asked questions
- How many calories are in 100 g of dark chocolate?
- 100 g has 539 kcal. That means about 19 g for every 100 kcal.
- How many calories are in one piece of dark chocolate?
- One piece (5 g) has 27 kcal.
Log dark chocolate with a photo in MacroLab
Snap your plate and MacroLab estimates calories and macros, then keeps your daily targets up to date.
Data from the MacroLab food catalog, updated September 26, 2026. Values vary by variety and brand; check the label of the product you buy.