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Dark chocolate bar (half) Calories
High cocoa, source of antioxidants, fiber, and magnesium
In season: Spring · Summer · Autumn · Winter
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
Quick answer
½ piece (half) of Dark chocolate bar (half) (25 g) has 135 calories. That works out to 540 calories per 100 g. It contains 11.5 g of carbs, 1.9 g of protein, 9.5 g of fat and 2.8 g of fiber. Its 0.5 mg of Copper covers 50% of the Daily Value. Its glycemic index is 23 (low), so it raises blood sugar slowly.
Dark chocolate bar (half) Nutrition Facts
Selected: ½ piece (half) · 25 g
135
KCAL / 25G
Carbs
11.5g
· 4% DV
Protein
1.9g
· 4% DV
Fat
9.5g
· 12% DV
Fiber
2.8g
· 10% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 33% · Protein 5% · Fat 62%
Dark chocolate bar (half) nutrition facts table · ½ piece (half) (25 g)
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 135 kcal | |
| Total fat | 9.5 g | 12% |
| Saturated fat | 5.5 g | 28% |
| Trans fat | 0 g | |
| Sodium | 5 mg | 0% |
| Total carbohydrate | 11.5 g | 4% |
| Fiber | 2.8 g | 10% |
| Protein | 1.9 g | 4% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
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How Many Calories in ½ Dark chocolate bar (half)?
| Serving | Amount | Calories |
|---|---|---|
| ½ piece (half) | 25 g | 135 kcal |
| 1 slice (thin) | 10 g | 54 kcal |
| 1 slice (thick) | 20 g | 108 kcal |
| 1 serving (medium) | 30 g | 162 kcal |
| 1 piece (whole) | 50 g | 270 kcal |
| 1 serving (large) | 50 g | 270 kcal |
| 100 g | 100 g | 540 kcal |
| 2 piece (double) | 100 g | 540 kcal |
Calculated from 540 calories per 100 g.
Frequently Asked Questions About Dark chocolate bar (half)
Is half a dark chocolate bar good for you?
Yes, dark chocolate can provide fiber, magnesium, and cocoa compounds with antioxidant activity. It also contains sugar and saturated fat, so treat it as an occasional sweet rather than a food you need to eat for health benefits.
Does half a dark chocolate bar contain caffeine?
Yes, dark chocolate contains caffeine as well as theobromine, a related stimulant. The amount varies with the cocoa content and the bar, so it may affect people who are sensitive to stimulants even when eaten in a modest portion.
Can half a dark chocolate bar keep you awake?
Yes, it can, especially if you are sensitive to caffeine. Dark chocolate also contains theobromine, which has stimulating effects. If chocolate late in the day disrupts your sleep, have it earlier instead.
Why does half a dark chocolate bar turn white?
A white or grayish coating is usually caused by cocoa butter moving to the surface or sugar crystallizing after exposure to moisture. This is called bloom and is generally a quality issue, not a sign that the chocolate is unsafe.
How should you store half a dark chocolate bar?
Keep it sealed in a cool, dry place away from sunlight, strong smells, and temperature swings. A refrigerator can expose chocolate to moisture and odors; if you refrigerate it, seal it well and let it reach room temperature before opening.
How do you melt half a dark chocolate bar without burning it?
Break the bar into small pieces and melt them gently over a pan of simmering water, keeping the bowl above the water. For a microwave, heat in short bursts and stir between them; chocolate can scorch quickly if overheated.
What is the difference between half a dark chocolate bar and milk chocolate?
Dark chocolate generally contains more cocoa and less milk, giving it a more intense, less creamy taste. Milk chocolate includes milk ingredients and is usually sweeter. The exact flavor and bitterness of a dark bar vary with its cocoa content.
Can you bake with half a dark chocolate bar?
Yes, you can chop it into cookies, brownies, or cakes, or melt it for a glaze. If a recipe calls for baking chocolate, remember that a sweetened dark bar may change the recipe’s sweetness and texture.
Can dogs eat half a dark chocolate bar?
No. Chocolate contains theobromine, which dogs process poorly, and dark chocolate can be especially hazardous. If a dog has eaten any, contact a veterinarian promptly and share the type of chocolate, the amount, and when it happened.
Is half a dark chocolate bar a good pre-workout snack?
It can be a small treat before exercise, but it is not a reliable source of quick fuel because its fat can slow digestion. For energy before a workout, pair it with a carbohydrate-rich food such as fruit if that suits you.
Dark chocolate bar (half) Vitamins & Minerals
Vitamins
Biotin
0.75µg · 3% DV
B3
0.28mg · 2% DV
B1
0.02mg · 2% DV
Vitamin K
2µg · 2% DV
Minerals
Copper
0.45mg · 50% DV
Magnesium
57mg · 14% DV
Iron
2.05mg · 11% DV
Phosphorus
77mg · 11% DV
Potassium ⭐
179mg · 5% DV
Sodium
5mg · 0% DV
Dark chocolate bar (half) Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
How to Burn Off Dark chocolate bar (half)
To burn the 135 calories in ½ piece (half) (25 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
What is Dark chocolate bar (half)?
A half dark chocolate bar is a portion of chocolate made mainly from cocoa solids and cocoa butter, usually with sugar. Compared with milk chocolate, it has a deeper cocoa flavour and a less creamy, firmer snap, then melts slowly on the tongue.
It is commonly enjoyed a square or two at a time with coffee or tea, as a small dessert, or chopped into baking. Its cocoa-forward taste makes it a satisfying treat, but it is energy-dense; it also provides fibre, with 11 g per 100 g. Pairing a modest portion with fruit or unsweetened coffee keeps the serving simple and balanced.
How Nutritious Is Dark chocolate bar (half)?
Nutrient density
Medium
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
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.
Is Dark chocolate bar (half) 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 bar (half) Contain Allergens?
No known major allergens
Which Diets Is Dark chocolate bar (half) Good For?
Vegan
— Not suitable
Vegetarian
✓ Suitable
Gluten-Free
— Not suitable
Dairy-Free
— Not suitable
Mediterranean
— Not suitable
Paleo
— Not suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
Dark chocolate bar (half) Fat Profile
SATURATED
5.5g
MONOUNSATURATED
2.75g
POLYUNSATURATED
0.3g
Omega 6:3 ratio 7.5:1
Above the ideal 4:1 (7.5:1).
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Nutrition data compiled from USDA FoodData Central and scientific sources.