Calories in dark chocolate
70–85% cacao solids. 598 kcal (2,502 kJ) per 100 g. Choose a portion below and every figure on the page updates.
Dark chocolate with 70–85% cacao solids is one of the most energy-dense sweets at 598 kcal (2502 kJ) per 100 g. Cocoa butter supplies most of that, with 43 g of fat per 100 g, while sugar accounts for about 24 g. It is unusually high in fibre for a sweet and provides substantial iron, magnesium and copper from the cocoa. It also contains some caffeine.
Where the energy comes from
Share of total energy contributed by each macronutrient, using the standard 4/4/9 kcal per gram factors:
Full nutrition breakdown
Values shown for 10 g.
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Energy | 60 kcal | – |
| Energy | 250 kJ | – |
| Protein | 0.8 g | 2% |
| Total fat | 4.3 g | 5% |
| Saturated | 2.45 g | 12% |
| Monounsaturated | 1.28 g | – |
| Polyunsaturated | 0.13 g | – |
| Trans | 0 g | – |
| Cholesterol | 0 mg | <1% |
| Total carbohydrate | 4.6 g | 2% |
| Sugars | 2.4 g | – |
| Fibre | 1.1 g | 4% |
| Caffeine | 8 mg | – |
| Water | 0.1 g | – |
| Vitamins | ||
| Vitamin A | 0.2 µg | <1% |
| Vitamin E | 0.059 mg | <1% |
| Vitamin K | 0.7 µg | <1% |
| Thiamin (B1) | 0.003 mg | <1% |
| Riboflavin (B2) | 0.008 mg | <1% |
| Niacin (B3) | 0.1 mg | <1% |
| Pantothenic acid (B5) | 0.042 mg | <1% |
| Vitamin B6 | 0.004 mg | <1% |
| Vitamin B12 | 0.028 µg | 1% |
| Minerals | ||
| Calcium | 7.3 mg | <1% |
| Iron | 1.2 mg | 7% |
| Magnesium | 22.8 mg | 5% |
| Phosphorus | 30.8 mg | 2% |
| Potassium | 71.5 mg | 2% |
| Sodium | 2 mg | <1% |
| Zinc | 0.3 mg | 3% |
| Copper | 0.2 mg | 20% |
| Manganese | 0.2 mg | 8% |
| Selenium | 0.7 µg | 1% |
Daily Values are the FDA reference intakes for adults and children aged 4 and over, based on a 2,000 kcal diet. They are a labelling standard, not a personal target.
Common portions
| Portion | Grams | kcal | kJ | Protein g | Carbs g | Fat g |
|---|---|---|---|---|---|---|
| 1 square (10 g) | 10 | 60 | 250 | 0.8 | 4.6 | 4.3 |
| 1 oz | 28.4 | 170 | 709 | 2.2 | 13 | 12.1 |
| 1 bar (101 g) | 101 | 604 | 2,527 | 7.9 | 46.4 | 43.1 |
Things worth knowing
- One square (10 g) has about 60 kcal / 250 kJ, a 1 oz (28 g) serving about 170 kcal / 709 kJ, and a 101 g bar about 604 kcal / 2527 kJ.
- Darker is not lighter: milk chocolate is 535 kcal per 100 g, because more cocoa means more fat even though sugar falls (24 g vs 52 g per 100 g).
- A 1 oz serving provides about 3.4 mg of iron (19% of the Daily Value), 65 mg of magnesium and 3 g of fibre.
- Caffeine is modest: about 23 mg per 1 oz, compared with roughly 49 mg in a cup of brewed black tea.
Converting these figures
One 1 square (10 g) of dark chocolate is 60 kcal, which is 250 kJ. To convert any other figure, divide kilojoules by 4.184 for calories, or use the converter on the home page.
It takes 40 g of dark chocolate to reach 1,000 kJ (239 kcal). See how that compares with other foods on the 1000 kJ to calories page.
Similar foods
Compare all 12 sweets and snacks in one table →
Source: USDA FoodData Central, SR Legacy 19904. Values are averages; individual samples vary with variety, growing conditions, and preparation.