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Dark chocolate nutrition facts
A 1 undetermined oz (28 g) serving of dark chocolate provides 170 calories, 2 g protein, 13 g carbohydrate, and 12 g fat — about 5% of its calories from protein, 31% from carbohydrate, and 64% from fat. The interactive label below toggles between a serving and 100 g.
Calorie split
| Nutrient | Per 1 undetermined oz (28 g) | Per 100 g |
|---|---|---|
| Calories | 170 | 598 |
| Protein | 2 g | 8 g |
| Total carbohydrate | 13 g | 46 g |
| Total fat | 12 g | 43 g |
Vitamins & minerals
Per serving (28 g)
- Vitamin A (RAE)
- 0.57 mcg
- Vitamin E
- 0.17 mg
- Vitamin K
- 2.07 mcg
- Thiamin (B1)
- 0.01 mg
- Riboflavin (B2)
- 0.02 mg
- Niacin (B3)
- 0.30 mg
- Vitamin B6
- 0.01 mg
- Vitamin B12
- 0.08 mcg
- Magnesium
- 64.6 mg
- Phosphorus
- 87.3 mg
- Zinc
- 0.94 mg
- Copper
- 0.50 mg
- Manganese
- 0.55 mg
- Selenium
- 1.93 mcg
Selecting, storing & prepping dark chocolate
- Selecting
- Cacao percentage on the label indicates how much of the bar is cocoa solids versus sugar — a higher percentage (70% or above) generally means more antioxidants and less sugar, though flavor becomes more bitter.
- Storing
- Dark chocolate keeps up to a year in a cool, dry place away from direct light; refrigeration isn't necessary and can cause a whitish bloom on the surface from temperature swings (harmless, but affects appearance).
- Prepping
- Letting dark chocolate come to room temperature before eating allows its full flavor and aroma to develop, since cold temperatures mute both.
Storage guidance from the USDA FoodKeeper database (FSIS, Cornell University, and the Food Marketing Institute).
Nutrition highlights
Per 1 undetermined oz (28 g), dark chocolate is an excellent source of Copper and Manganese and a good source of Iron, Magnesium, and Dietary Fiber.
Relatively high in Saturated Fat per serving — worth noting if you are limiting them.
% of the FDA Daily Value per 1 undetermined oz (28 g) serving.
Key metrics
Nutrient density
Per 100 kcal, dark chocolate delivers about 4% of a Daily Value on average across 22 beneficial nutrients. The score is its percentile for that measure among the 177 foods in our database — higher means more nutrition per calorie. How this is calculated.
- More iron than 100% of foods · 100% of other
- More fiber than 98% of foods · 100% of other
- More potassium than 97% of foods · 100% of other
Density counts protein, fiber, and vitamins and minerals (not fat, sodium, or sugar), each capped so a single nutrient can’t dominate, with a calorie floor so very-low-calorie foods aren’t overstated. It measures nutrition per calorie within our database — a useful guide, not a complete verdict on how “healthy” a food is.
Similar foods & swaps
The closest other to dark chocolate by nutrition (per 100 g), and how each differs.
Questions
- How many calories are in dark chocolate?
- A 1 undetermined oz (28 g) serving of dark chocolate has about 170 calories. Per 100 g, it has 598 calories — a very high calorie density.
- How much protein is in dark chocolate?
- Dark chocolate provides about 2 g of protein per 1 undetermined oz (28 g) serving.
- What are the macros in dark chocolate?
- Per serving, dark chocolate has roughly 2 g protein, 13 g carbohydrate, and 12 g fat. By calories, that is 5% protein, 31% carbohydrate, and 64% fat.
- Is dark chocolate high in protein?
- Dark chocolate has a protein density of about 1.3 g per 100 kcal, and 5% of its calories come from protein. Foods above roughly 10 g per 100 kcal are generally considered protein-dense.
- What vitamins and minerals are in dark chocolate?
- Per 1 undetermined oz (28 g), dark chocolate is a notable source of Copper, Manganese, Iron, and Magnesium. The label above lists the full micronutrient profile with % Daily Values.
- What is the nutritional value of dark chocolate?
- Per 1 undetermined oz (28 g), dark chocolate has 170 calories, 2 g protein, 13 g carbohydrate, and 12 g fat, plus notable amounts of Copper, Manganese, Iron, and Magnesium. See the full nutrition facts label above for every vitamin and mineral.
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References & methodology
- Data source: U.S. Department of Agriculture, Agricultural Research Service — FoodData Central, FDC ID 170273 (public domain).
- Daily Values: FDA Nutrition Facts label, 2016 update (adults and children aged 4+).
- Source claims: a serving supplying 10–19% of the Daily Value is a “good source”; 20% or more is an “excellent source” (FDA, 21 CFR 101.54).
- Calorie split: Atwater general factors — 4 kcal/g for protein and carbohydrate, 9 kcal/g for fat.
- Last reviewed: June 2026. Values are typical figures and vary with variety, ripeness, and preparation.
NutriFactsHub. “Dark chocolate Nutrition Facts.” https://nutrifactshub.com/foods/dark-chocolate