1 piece (medium) of Dark chocolate (unsweetened) (20 g) has 106 calories. That works out to 530 calories per 100 g. It contains 3.9 g of carbs, 1.6 g of protein, 8.6 g of fat and 2.2 g of fiber. Its 0.4 mg of Copper covers 40% of the Daily Value. Its glycemic index is 25 (low), so it raises blood sugar slowly.

What is Dark chocolate (unsweetened)?

Unsweetened dark chocolate is a cocoa-forward chocolate made chiefly from cocoa solids and cocoa butter, without added sugar. It is usually sold as a firm, dark bar scored into pieces, and its richness depends on the cocoa blend and any sweetener used in the recipe.

Its flavour is intense and often pleasantly bitter, with a smooth, slow-melting texture. It can be eaten a square at a time with coffee or tea, or chopped into baking and desserts. It is rich in fat and energy, while cocoa also contributes fibre. If you find it too bitter on its own, pair it with fruit, or grate a little over porridge or yoghurt for a less intense serving.

Dark chocolate (unsweetened) Nutrition Facts

Selected: 100 g

530

KCAL / 100G

Carbs

19.5g

· 7% DV

Protein

8.1g

· 16% DV

Fat

43.1g

· 55% DV

Fiber

11g

· 39% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 16% · Protein 7% · Fat 77%

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Dark chocolate (unsweetened) Vitamins & Minerals

Vitamins

0.25mg · 19% DV

1.1mg · 7% DV

0.08mg · 7% DV

Biotin

2µg · 7% DV

Minerals

Copper

2mg · 222% DV

Manganese

2mg · 87% DV

Iron

12mg · 67% DV

Magnesium

228mg · 54% DV

Potassium ⭐

715mg · 21% DV

How Nutritious Is Dark chocolate (unsweetened)?

Nutrient density

High

65/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

42/ 100

An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.

Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.

Dark chocolate (unsweetened) Glycemic Index

GLYCEMIC INDEX

Low

0 Low5570100

GLYCEMIC LOAD

Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Dark chocolate (unsweetened)

To burn the 530 calories in 100 g:

🚶

131min

Walking (5 km/h)

🏃

54min

Running (8 km/h)

🚴

72min

Cycling

🏊

62min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

Is Dark chocolate (unsweetened) Processed?

NOVA 3

Processed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does Dark chocolate (unsweetened) Contain Allergens?

No known major allergens

Gluten free

Dairy free

Eggs free

Peanuts free

Tree nuts free

Fish free

Soy free

Sesame free

Which Diets Is Dark chocolate (unsweetened) Good For?

Vegan

✓ Suitable

Vegetarian

✓ Suitable

Gluten-Free

✓ Suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

✓ Suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

✓ Suitable

Low FODMAP

— Not suitable

Dark chocolate (unsweetened) Fat Profile

SATURATED

25.7g

MONOUNSATURATED

12.8g

POLYUNSATURATED

1.2g

⚖️

Omega 6:3 ratio 11.3:1

Above the ideal 4:1 (11.3:1).

Compare Dark chocolate (unsweetened)

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Dark chocolate (unsweetened) vs Caramel sauce210 kcal more per 100 g

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Dark chocolate (unsweetened) vs Dark chocolate10 kcal fewer per 100 g

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Foods Similar to Dark chocolate (unsweetened)

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Rose Turkish delight

330 kcal

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320 kcal

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Dark chocolate

540 kcal

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Höşmerim

320 kcal

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210 kcal

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320 kcal

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Frequently Asked Questions About Dark chocolate (unsweetened)

Can you eat unsweetened dark chocolate by itself?

Yes, you can eat unsweetened dark chocolate on its own, but its intense bitterness may take getting used to. Break off a small piece first; it is also commonly grated or paired with fruit to balance the flavour.

Is unsweetened dark chocolate the same as baking chocolate?

Not always. Baking chocolate often means unsweetened chocolate made mainly from cocoa solids and cocoa butter, while unsweetened dark chocolate may have a different cocoa content or use non-sugar sweeteners. The terms are not interchangeable in every recipe.

Does unsweetened dark chocolate contain caffeine?

Yes, unsweetened dark chocolate contains caffeine as well as theobromine, both naturally present in cacao. The amount varies with the cacao content and serving size, so people sensitive to stimulants may prefer not to have it near bedtime.

Can unsweetened dark chocolate replace semi-sweet chocolate in baking?

Yes, but the recipe needs adjustment: unsweetened dark chocolate lacks the sugar in semi-sweet chocolate and may differ in fat content. Add sweetener to taste and account for the extra cocoa butter rather than swapping it in gram for gram.

Why does unsweetened dark chocolate taste so bitter?

Unsweetened dark chocolate tastes bitter because it has no added sugar to balance the roasted, naturally bitter compounds in cacao. A higher cacao content usually intensifies that flavour; using it in a recipe with fruit or a sweetener can soften it.

Can unsweetened dark chocolate raise blood sugar?

Yes, unsweetened dark chocolate can still affect blood sugar because it contains carbohydrates, and some products include non-sugar sweeteners that may have their own effects. People with diabetes should consider the serving and product details as part of their care plan.

Does unsweetened dark chocolate help with weight loss?

No, unsweetened dark chocolate is not a weight-loss food. Removing sugar does not make it low in energy, and large portions can add up quickly; a small piece can fit as a treat without serving as a weight-loss strategy.

How should you store unsweetened dark chocolate?

Store unsweetened dark chocolate tightly wrapped in a cool, dry place away from sunlight and strong-smelling foods. Avoid temperature swings, which can cause a pale surface bloom; refrigeration is usually unnecessary unless your room is very warm.

Is unsweetened dark chocolate toxic to dogs?

Yes. Unsweetened dark chocolate can poison dogs because cacao contains theobromine and caffeine, and darker chocolate can be especially dangerous. If a dog eats any, contact a veterinarian promptly rather than waiting for symptoms.

Why does unsweetened dark chocolate turn white?

A white or grey film on unsweetened dark chocolate is usually fat bloom, when cocoa butter rises to the surface after temperature changes. It may look unappealing but is generally harmless; the chocolate can still be used if its smell and texture are normal.

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Nutrition data compiled from USDA FoodData Central and scientific sources.

· Last updated: September 24, 2026