How much protein is in dark chocolate (70–85%)?

Dark chocolate (70–85%) has 7.8 g of protein per 100 g and 2.2 g per 1 oz (28 g). That is 1.3 g of protein per 100 kcal — essentially not a protein source.

Where do these calorie figures come from?

USDA FoodData Central record 170273, “Chocolate, dark, 70-85% cacao solids” (SR Legacy, FDC SR Legacy 2018-04 + FNDDS 2024-10-31). Energy is USDA nutrient 1008 (Energy, kcal); protein, fat and carbohydrate are read from the same record. USDA data is in the public domain, and the FDC ID above links straight to it.

All foods

Sugar, honey, chocolate and treatsUSDA SR LegacyFDC 170273

Calories in dark chocolate (70–85%)

USDA FoodData Central record for “Chocolate, dark, 70-85% cacao solids” — per 100 g, per every USDA serving size, and next to the other sugar, honey, chocolate and treats rows.

The short answer

Dark chocolate (70–85%): 598 kcal per 100 g. 1 oz (28 g) is 170 kcal with 2.2 g of protein. Source: USDA FoodData Central record 170273, "Chocolate, dark, 70-85% cacao solids".

Per 100 g

Nutrient	Per 100 g	Share of energy
Energy	598 kcal	100%
Protein	7.8 g	5%
Fat	42.6 g	64%
Carbohydrate	45.9 g	31%

Dark chocolate (70–85%) is 598 kcal per 100 g in USDA FoodData Central (SR Legacy). Of that energy, about 5% comes from protein, 64% from fat and 31% from carbohydrate. That works out to 1.3 g of protein per 100 kcal — essentially not a protein source.

Per serving

The serving sizes USDA lists for this record, priced from the per-100 g figures above. Nothing here is rounded to a “portion” — the gram weight next to each label is what the calories are computed from.

Serving	Weight	Calories	Protein	Fat	Carbs
100 g	100 g	598	7.8 g	42.6 g	45.9 g
1 oz	28 g	170	2.2 g	12.1 g	13 g
1 bar	101 g	604	7.9 g	43 g	46.4 g

Compared with other sugar, honey, chocolate and treats

Food	kcal / 100 g	Protein / 100 g	Per serving
Granulated sugar	387	0 g	16 kcal · 1 tsp
Honey	304	0.3 g	64 kcal · 1 tbsp
Dark chocolate (70–85%)	598	7.8 g	170 kcal · 1 oz
Vanilla ice cream	207	3.5 g	137 kcal · 1 serving 1/2 cup
Granola	489	13.7 g	597 kcal · 1 cup

Worth knowing

Dark chocolate is around 600 kcal per 100 g — the cocoa butter makes it 43% fat. A 28 g square-and-a-bit is about 170 kcal; the "healthier than milk chocolate" part is about sugar and cocoa, not calories.

Questions about dark chocolate (70–85%)

How many calories are in dark chocolate (70–85%)?: Dark chocolate (70–85%): 598 kcal per 100 g. 1 oz (28 g) is 170 kcal with 2.2 g of protein. Source: USDA FoodData Central record 170273, "Chocolate, dark, 70-85% cacao solids".
How much protein is in dark chocolate (70–85%)?: Dark chocolate (70–85%) has 7.8 g of protein per 100 g and 2.2 g per 1 oz (28 g). That is 1.3 g of protein per 100 kcal — essentially not a protein source.
Where do these calorie figures come from?: USDA FoodData Central record 170273, “Chocolate, dark, 70-85% cacao solids” (SR Legacy, FDC SR Legacy 2018-04 + FNDDS 2024-10-31). Energy is USDA nutrient 1008 (Energy, kcal); protein, fat and carbohydrate are read from the same record. USDA data is in the public domain, and the FDC ID above links straight to it.

How calorie.one logs it

Type “dark chocolate (70–85%)” into calorie.one and the app matches this exact record — “Chocolate, dark, 70-85% cacao solids” — estimates the grams, and shows the line with its USDA label. You correct the amount; the per-100 g figure is never guessed. That split between recognition and arithmetic is the whole methodology. For the numbers in context, read How accurate is calorie counting, really?.