Calories in dark chocolate: 431 kcal per 100 g

Q: How many calories are in a portion of dark chocolate?

A typical portion (30 g, a small bag or bar) gives 129 kcal. Per 100 g the figure is 431 kcal.

Q: Is dark chocolate a source of vitamin B6?

It is a source of vitamin B6: 0.35 mg per 100 g, 25 % of the NRV, which passes the 15 % threshold for “source of” but not the 30 % needed for “high in”.

Q: Which vitamins and minerals does dark chocolate have most of?

By share of the daily reference intake: vitamin B6 (0.35 mg, 25 %), potassium (389 mg, 19 %) and phosphorus (104 mg, 15 %) per 100 g.

Q: Is dark chocolate high in fibre?

It is a source of fibre (4.7 g per 100 g, above the 3 g line) but not high in fibre, which needs 6 g.

What’s in a 30 g serving

More than half of a serving is carbohydrate, 18.9 g of it sugars.

4.9 gFat

1.1 gProtein

21.6 gCarbohydrate

1.4 gFibre

1.6 gWater

4.9 gFat
1.1 gProtein
21.6 gCarbohydrate
1.4 gFibre
1.6 gWater

Above average for sweets and snacks

Dark chocolate is 431 kcal per 100 g. The 82 sweets and snacks in this database average 354.

Dark chocolate431

Sweets and snacks average354

High in sugar

62.9 g of sugars per 100 g, which is red on a UK traffic-light label (the line is 22.5 g).

Sugars, per serving18.9 g

Salt, per serving0 g

Vitamins and minerals in dark chocolate

Two of the 21 reach the “source of” level, vitamin B6 first; none reaches “high in”.

7.5 %

Vitamin B6

0.11 mg in a 30 g serving

6th of 54 sweets and snacks

Vitamin B6 contributes to the normal function of the immune system, to normal psychological function and to the reduction of tiredness and fatigue.

Potassium117 mg5.8 %

Phosphorus31.2 mg4.5 %

Thiamin (vitamin B1)0.05 mg4.4 %

Vitamin E0.46 mg3.8 %

Vitamin A0.0231 mg2.9 %

Only a trace

Vitamin D
Vitamin B12

None recorded

Vitamin C

Show all 21 with amounts

Vitamin B60.11 mg, 7.5 %

Potassium117 mg, 5.8 %

Phosphorus31.2 mg, 4.5 %

Thiamin (vitamin B1)0.05 mg, 4.4 %

Vitamin E0.46 mg, 3.8 %

Vitamin A0.0231 mg, 2.9 %

Niacin (vitamin B3)0.33 mg, 2.1 %

Calcium14.7 mg, 1.8 %

Zinc0.18 mg, 1.8 %

Copper0.02 mg, 1.8 %

Selenium0.0009 mg, 1.6 %

Iodine0.0024 mg, 1.6 %

Manganese0.03 mg, 1.5 %

Iron0.2 mg, 1.4 %

Chloride9 mg, 1.1 %

Magnesium3.9 mg, 1 %

Biotin0.00048 mg, 1 %

Riboflavin (vitamin B2)0 mg, <1 %

Pantothenic acid (vitamin B5)0.01 mg, <1 %

Folate0.0003 mg, <1 %

Vitamin Cnone recorded

Badges use the UK legal thresholds per 100 g: 15 % of the reference intake for “source of”, 30 % for “high in”. A trace is shown as “trace” and never counts.

What dark chocolate doesn’t give you. And where to find it.

No recorded vitamin D, vitamin C or vitamin B12.

Vitamin D

Tracein dark chocolate

Find it inBloater, grilled500 % per 100 g

Vitamin C

0mgin dark chocolate

Find it inCherries, West Indian2150 % per 100 g

Vitamin B12

Tracein dark chocolate

Find it inLiver, ox, raw4400 % per 100 g

Immufix Daily Immune Support pouch, orange flavour

100 mgVitamin C, 125 %

0.075 mgSelenium, 136 %

0.00125 mgVitamin D, 25 %

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Every 25 g scoop declares 100 mg of vitamin C, 0.00125 mg of vitamin D and 0.075 mg of selenium, alongside other vitamins and minerals. Vitamin C, vitamin D and selenium contribute to the normal function of the immune system.

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Tracked UK delivery

Free standard delivery to UK addresses. Royal Mail 48 tracked, usually 2 to 3 working days.

Made in Cambridgeshire

Made in the UK since 1998, with every nutrient and its declared amount listed on the label.

Dark chocolate against other sweets and snacks

Dark chocolate comes second for vitamin B6 here, just behind potato rings.

0.4mg

0.2mg

0.1mg

Potato rings+0.1 mg

Chocolate, dark, with crème or mint fondant centresthis page

Chocolate, milk−0.1 mg

Chocolate spread−0.2 mg

Halva, carrot−0.2 mg

Mincemeat−0.2 mg

All values per 100 g, from the same dataset. Differences are against dark chocolate.

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Taken every morning since 1998.

Paula Radcliffe has taken the same formula since she was 24. Customers rate Immufix 4.8 out of 5 from 89 reviews.

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Questions about dark chocolate

What the numbers say to the questions people actually search.

How many calories are in a portion of dark chocolate?

A typical portion (30 g, a small bag or bar) gives 129 kcal. Per 100 g the figure is 431 kcal.

Is dark chocolate a source of vitamin B6?

It is a source of vitamin B6: 0.35 mg per 100 g, 25 % of the NRV, which passes the 15 % threshold for “source of” but not the 30 % needed for “high in”.

Which vitamins and minerals does dark chocolate have most of?

By share of the daily reference intake: vitamin B6 (0.35 mg, 25 %), potassium (389 mg, 19 %) and phosphorus (104 mg, 15 %) per 100 g.

Is dark chocolate high in fibre?

It is a source of fibre (4.7 g per 100 g, above the 3 g line) but not high in fibre, which needs 6 g.

How these numbers were made

Every figure comes from the UK Composition of Foods Integrated Dataset (CoFID), 2021 edition, record 17-650, Chocolate, dark, with crème or mint fondant centres, 10 analysed samples, published by Public Health England under the Open Government Licence v3.0. Main data references: DH, Nutrient analysis of a range of processed foods with particular reference to trans fatty acids, 2013. Values are per 100 g of the edible part; a serving is 30 g, a small bag or bar, the usual UK portion for sweets and snacks. Reference intakes follow Regulation (EU) 1169/2011 Annex XIII as retained in GB law; “source of”, “high in” and “low” follow Regulation (EC) 1924/2006, assessed per 100 g. Function lines are the authorised wording from the GB register of nutrition and health claims, credited to the nutrient. Energy is rounded to the whole kcal and kJ; other amounts to one decimal, or two below 1. A trace is shown as “trace” and never gets a figure or a badge; a nutrient never analysed is left off the page. We start from the dataset’s 2,887 records and keep 2,322: records weighed with bone, shell or skin, alcoholic drinks, infant foods, brand-named products, records with fewer than eight measured vitamins and minerals and near-identical variants are left out. Group context uses the 82 sweets and snacks kept from the dataset; a rank counts only the foods with a measured figure for that nutrient. Food images are illustrations from Ingredient Atlas, released under CC0; they show the food, not the measured sample, and where no illustration of the exact food exists the nearest one is shown (here: Dark Chocolate). Checked 5 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.

More sweets and snacks

From the same group, with calories per 100 g, and the foods with the most vitamin B6.

Sugar, Demerara394 kcal

Truffles, mocha488 kcal

Chocolate nut sundae271 kcal 82sweets and snacksin this food group

How many calories are in dark chocolate?

What’s in a 30 g serving

Above average for sweets and snacks

High in sugar

Vitamins and minerals in dark chocolate

Vitamin B6

Only a trace

None recorded

What dark chocolate doesn’t give you. And where to find it.

Vitamin D

Vitamin C

Vitamin B12

Or one scoop of Immufix

Try your first pouch

Tracked UK delivery

Made in Cambridgeshire

Dark chocolate against other sweets and snacks

Taken every morning since 1998.

Questions about dark chocolate

More sweets and snacks

More sweets and snacks

Most vitamin B6

Nutrient guides

Nutrition

Vitamins and minerals