Calories in Dark chocolate

100 g of dark chocolate has 550 kcal, and 1 piece of dark chocolate (8 g) has about 44 kcal.

550 kcalper 100 g

44 kcal in 1 piece (8 g)

Very high density · 5.5 kcal per g

Protein 5.1g 4% of the calories
Carbs 60g 44% of the calories
Fat 32.2g 53% of the calories
Fiber 7.2g

Per 100 g. Figures from USDA FoodData Central. Averages across measured samples; a few percent either way is normal. Updated 2026-10-04.

100 g is about 135 minutes of walking, or 48 minutes of running, for a 70 kg body - context, not a debt to work off.

Dark chocolate nutrition facts

A dash means nobody measured it - not that there is none of it.

Per serving: 1 piece (8 g)
Nutrient	Per 100 g	Per serving
Energy	550kcal	44kcal
Fat	32.2g	2.6g
Saturated Fat	19g	1.5g
Unsaturated Fat	13.2g	1.1g
Carbs	60g	4.8g
Sugars	46.1g	3.7g
Fiber	7.2g	0.58g
Protein	5.1g	0.41g
Salt	0.06g	0.005g
Water	1g	0.08g

Alcohol	0g	0g
Caffeine	47mg	3.8mg

Monounsaturated	9.8g	0.78g
Polyunsaturated	1.1g	0.089g
Omega-3	0.084g	0.007g
ALA	0.083g	0.007g
DHA	0g	0g
EPA	0.001g	0g
Omega-6	1g	0.081g
AA	0.002g	0g
LA	1g	0.081g
Cholesterol	7mg	0.56mg

Vitamin B1 (Thiamine)	0.026mg	0.002mg
Vitamin B2 (Riboflavin)	0.051mg	0.004mg
Vitamin B3 (Niacin)	0.75mg	0.06mg
Vitamin B6 (Pyridoxine)	0.041mg	0.003mg
Vitamin B12 (Cobalamin)	0.23µg	0.018µg
Folate (Vitamin B9)	0µg	0µg
Vitamin A	2µg	0.16µg
Vitamin C	0mg	0mg
Vitamin D	0IU	0IU
Vitamin E	0.55mg	0.044mg
Vitamin K	8µg	0.64µg
Choline	27.6mg	2.2mg

Calcium	57mg	4.6mg
Copper	1.1mg	0.086mg
Iron	8.1mg	0.65mg
Magnesium	152mg	12.2mg
Phosphorus	214mg	17.1mg
Potassium	568mg	45.4mg
Selenium	3.5µg	0.28µg
Zinc	2.1mg	0.17mg

Beta-carotene	25µg	2µg
Lycopene	0µg	0µg
Lutein + zeaxanthin	31µg	2.5µg
Flavonoids	36.8mg	2.9mg
Flavan-3-ols	34.3mg	2.7mg
Flavonols	2.4mg	0.19mg

Read it as an averageIt is what a laboratory measured, averaged over samples - variety, ripeness and cut all move it, and a few percent either way is normal.

What stands out in dark chocolate

1 piece (8 g) is 44 kcal, about 2% of a 2,000 kcal day.

High in fat32.2 g per 100 g (46% of the daily reference)
High in saturated fat19 g per 100 g (95% of the daily reference)
High in sugars46.1 g per 100 g (51% of the daily reference)
High in copper1.1 mg per 100 g (108% of the daily reference)
High in iron8.1 mg per 100 g (58% of the daily reference)

Claims follow the EU nutrition claims rules and the "high" warnings the UK/EU front-of-pack labels; the 2,000 kcal day is the reference intake for an average adult.

Calories in different amounts of dark chocolate

8 g1 piece	44 kcal
28 g1 oz	154 kcal
50 g	275 kcal
100 g	550 kcal
200 g	1,100 kcal

Any amount g 44 kcal

Foods with similar calories

Other published foods within reach of 550 kcal per 100 g, so the number has something to sit against.

Sugar 149 kcal less 401kcal / 100 g

Milk chocolate 15 kcal less 535kcal / 100 g

Popcorn 73 kcal less 477kcal / 100 g

Butter 193 kcal more 743kcal / 100 g

Bacon 66 kcal less 484kcal / 100 g

Cashews 24 kcal more 574kcal / 100 g

Questions about dark chocolate

100 g of dark chocolate has 5.1 g of protein. The macro calculator works out how much protein you need a day.

100 g of dark chocolate has 7.2 g of fiber.

100 g of dark chocolate has 46.1 g of sugar.

It depends on the size: square (5 g) about 28 kcal; small bar (25 g) about 138 kcal; bar (50 g) about 275 kcal; large bar (75 g) about 412 kcal.

Yes. 100 g of dark chocolate has 47 mg of caffeine.

Yes. 100 g of dark chocolate has 1.1 mg of copper, 108% of what an adult needs in a day.

Yes. 100 g of dark chocolate has 46.1 g of sugar, above the 22.5 g at which food labels mark sugar as high.

It can be part of a diet that loses weight: what counts is the total calories you eat in a day, not any single food. 100 g of dark chocolate has 550 kcal. The calorie calculator works out how many you need.

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