Dark chocolate (70–85%) nutrition facts

Dark chocolate (1 oz, 28.35 g) has 170 calories, 2.2 g protein, 3.1 g fiber, 12.1 g fat. It is an excellent source of copper (56% DV), manganese (24% DV) and a good source of iron and magnesium.

Copper 56% DV Manganese 24% DV Iron 19% DV Magnesium 15% DV Fiber 11% DV

Nutrition Facts

Serving size1 oz (28 g)

Calories170

Total Fat 12.1g15%

Saturated Fat 6.9g35%

Trans Fat 0.01g

Cholesterol 1mg0.3%

Sodium 6mg0.2%

Total Carbohydrate 13g4.7%

Dietary Fiber 3.1g11%

Total Sugars 6.8g

Protein 2.2g4.4%

Calcium 21mg1.6%

Iron 3.4mg19%

Potassium 203mg4.3%

* The % Daily Value (DV) tells you how much a nutrient in a serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice. Values from USDA FoodData Central; label rounding rules are not applied.

Calorie breakdown

■ Protein 5%
■ Fat 64%
■ Carbohydrate 31%

Share of calories by the 4-9-4 Atwater factors; the centre shows USDA's calorie value.

Scores

Nutrient density (NRF9.3)

Nine nutrients to encourage minus three to limit, per 100 kcal. Whole foods range from about −60 to 600; leafy greens score highest.

2.2

Inflammatory profile average for whole foods

Lower is more anti-inflammatory. Percentile 51 among 1,677 whole foods, from Dietary Inflammatory Index weights applied to this food's nutrients per 100 kcal.

All nutrients in dark chocolate

Nutrient	Per 1 oz	% Daily Value
Macronutrients
Calories	170 kcal	8.5%
Protein	2.2 g	4.4%
Total fat	12.1 g	15%
Carbohydrate	13 g	4.7%
Fiber	3.1 g	11%
Sugars	6.8 g	no DV
Fats
Saturated fat	6.9 g	35%
Trans fat	0.01 g	no DV
Monounsaturated fat	3.6 g	no DV
Polyunsaturated fat	0.4 g	no DV
Omega-3 (ALA+EPA+DHA)	0.01 g	no DV
Omega-6 (linoleic)	0.35 g	no DV
Cholesterol	1 mg	0.3%
Vitamins
Thiamin (B1)	0.01 mg	0.8%
Riboflavin (B2)	0.02 mg	1.7%
Niacin (B3)	0.3 mg	1.9%
Pantothenic acid (B5)	0.12 mg	2.4%
Vitamin B6	0.01 mg	0.6%
Vitamin B12	0.08 µg	3.3%
Vitamin A (RAE)	1 µg	0.1%
Vitamin E	0.17 mg	1.1%
Vitamin K	2.1 µg	1.7%
Minerals
Sodium	6 mg	0.2%
Calcium	21 mg	1.6%
Iron	3.4 mg	19%
Magnesium	65 mg	15%
Phosphorus	87 mg	7%
Potassium	203 mg	4.3%
Zinc	0.9 mg	8.5%
Copper	0.5 mg	56%
Manganese	0.55 mg	24%
Selenium	1.9 µg	3.5%
Carotenoids
Beta-carotene	5 µg	no DV
Lycopene	0 µg	no DV
Lutein + zeaxanthin	8 µg	no DV
Other
Caffeine	23 mg	no DV
Water	0 g	no DV

Nutrient	Per 100 g	% Daily Value
Macronutrients
Calories	598 kcal	30%
Protein	7.8 g	16%
Total fat	42.6 g	55%
Carbohydrate	45.9 g	17%
Fiber	10.9 g	39%
Sugars	24 g	no DV
Fats
Saturated fat	24.5 g	122%
Trans fat	0.03 g	no DV
Monounsaturated fat	12.8 g	no DV
Polyunsaturated fat	1.3 g	no DV
Omega-3 (ALA+EPA+DHA)	0.03 g	no DV
Omega-6 (linoleic)	1.22 g	no DV
Cholesterol	3 mg	1%
Vitamins
Thiamin (B1)	0.03 mg	2.8%
Riboflavin (B2)	0.08 mg	6%
Niacin (B3)	1.1 mg	6.6%
Pantothenic acid (B5)	0.42 mg	8.4%
Vitamin B6	0.04 mg	2.2%
Vitamin B12	0.28 µg	12%
Vitamin A (RAE)	2 µg	0.2%
Vitamin E	0.59 mg	3.9%
Vitamin K	7.3 µg	6.1%
Minerals
Sodium	20 mg	0.9%
Calcium	73 mg	5.6%
Iron	11.9 mg	66%
Magnesium	228 mg	54%
Phosphorus	308 mg	25%
Potassium	715 mg	15%
Zinc	3.3 mg	30%
Copper	1.77 mg	196%
Manganese	1.95 mg	85%
Selenium	6.8 µg	12%
Carotenoids
Beta-carotene	19 µg	no DV
Lycopene	0 µg	no DV
Lutein + zeaxanthin	27 µg	no DV
Other
Caffeine	80 mg	no DV
Water	1 g	no DV

Missing nutrients were not analysed by USDA for this food; they are not zero. F marks a value updated from Foundation Foods (April 2026 analytical data). Source: USDA FoodData Central #170273 ("Chocolate, dark, 70-85% cacao solids").

Dark chocolate variants compared

Per 100 g, so preparations can be compared directly.

Variant	kcal	Protein g	Fat g	Carbs g	Fiber g	Sugars g	Potassium mg	Vit C mg	Sodium mg
Dark chocolate (70–85%) (this page)	598	7.8	42.6	45.9	10.9	24	715	—	20
Dark 45–59%	546	4.9	31.3	61.2	7	47.9	559	—	24
Milk chocolate	535	7.7	29.7	59.4	3.4	51.5	372	0	79

Frequently asked questions

How many calories are in dark chocolate?

Dark chocolate has 170 calories per 1 oz (28.35 g), or 598 calories per 100 g, according to USDA FoodData Central.

How much protein is in dark chocolate?

2.2 g of protein per 1 oz, which is 4.4% of the 50 g Daily Value.

What is dark chocolate rich in?

Per serving, dark chocolate is richest in Copper at 56% of the Daily Value, Manganese (24%), Iron (19%), Magnesium (15%).

Is dark chocolate healthy?

By nutrient density, dark chocolate scores 5 on the NRF9.3 index (nine nutrients to encourage minus three to limit, per 100 kcal). Its nutrient profile is average for whole foods compared with other whole foods. See the methodology page for how both scores work; this is data, not medical advice.

More other foods

Nutrient values are from USDA FoodData Central (SR Legacy, April 2018; Foundation Foods, April 2026) and shown per serving as described on each page. %DV uses the FDA Daily Values for adults and children aged 4 and over. This is nutrition data for general information, not medical or dietary advice; talk to a clinician or registered dietitian about your own needs. How the numbers are calculated.