722 %
Vitamin B12 contributes to normal energy-yielding metabolism, to the normal function of the immune system and to the reduction of tiredness and fatigue.
How many calories are in cooked crab?
161kcal
in a 140 g fillet
115 kcal per 100 g.
Source: UK CoFID 2021, record 16-441. Checked 5 October 2026.
5.7 gFat
27.6 gProtein
0 gFibre
722 %Daily vitamin B12
What’s in a 140 g fillet
More than half of a fillet is water. The rest is 27.6 g protein and 5.7 g fat.
- 5.7 gFat
- 27.6 gProtein
- 101 gWater
- 5.7 gMinerals and the rest
Below average for fish and seafood
Crab is 115 kcal per 100 g. The 170 fish and seafood in this database average 138.
Crab115
Fish and seafood average138
High in protein
Protein supplies 68 % of the calories; the UK “high protein” line is 20 %.
Protein, per fillet27.6 g
Fat, per fillet5.7 g
Vitamins and minerals in crab
Ten of the 21 recorded reach the “high in” level. Vitamin B12 leads by a long way.
Also high in
A source of
Only a trace
- Vitamin D
- Vitamin C
Show all 21 with amounts
Vitamin B120.0181 mg, 722 %
Selenium0.218 mg, 397 %
Copper2.4 mg, 241 %
Iodine0.305 mg, 203 %
Zinc9.2 mg, 92 %
Chloride721 mg, 90 %
Riboflavin (vitamin B2)1.2 mg, 88 %
Phosphorus445 mg, 64 %
Vitamin E6.6 mg, 55 %
Niacin (vitamin B3)8.7 mg, 54 %
Calcium316 mg, 40 %
Pantothenic acid (vitamin B5)2.3 mg, 38 %
Biotin0.0122 mg, 24 %
Vitamin B60.22 mg, 16 %
Magnesium58.8 mg, 16 %
Iron2.1 mg, 15 %
Potassium286 mg, 14 %
Manganese0.27 mg, 13 %
Folate0.0182 mg, 9.1 %
Thiamin (vitamin B1)0.07 mg, 6.4 %
Vitamin A0.0042 mg, 0.5 %
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 crab doesn’t give you. And where to find it.
No recorded vitamin D or vitamin C, and only under 1 % of the vitamin A reference intake per 100 g.
Vitamin D
Tracein crab
Find it inBloater, grilled500 % per 100 g
Vitamin C
Tracein crab
Find it inCherries, West Indian2150 % per 100 g
Vitamin A
<1%in crab, per 100 g
Find it inLiver, calf, fried3152 % per 100 g
100 mgVitamin C, 125 %
0.075 mgSelenium, 136 %
0.00125 mgVitamin D, 25 %
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Made in Cambridgeshire
Made in the UK since 1998, with every nutrient and its declared amount listed on the label.
Crab against other fish and seafood
Per 100 g, crab has the most vitamin B12 of the 6 here, ahead of anchovies (canned in oil, drained).
0.0129mg
0.011mg
0.005mg
0.0042mg
0.0034mg
0.0034mg
Crab, purchased cookedthis page
Anchovies, canned in oil, drained−0.0019 mg
Salmon, smoked (hot-smoked)−0.0087 mg
Tuna, canned, drained−0.0095 mg
Crab, white meat, purchased cooked−0.0095 mg
All values per 100 g, from the same dataset. Differences are against crab.
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Questions about crab
Four questions chosen by the facts above, so every food answers differently.
How many calories are in a portion of crab?
A typical portion (140 g, one fillet) gives 161 kcal. Per 100 g the figure is 115 kcal.
Is crab high in vitamin B12?
Yes. Crab, purchased cooked has 0.0129 mg vitamin B12 per 100 g, 516 % of the NRV, above the 30 % threshold for a “high in” claim.
Which vitamins and minerals does crab have most of?
By share of the daily reference intake: vitamin B12 (0.0129 mg, 516 %), selenium (0.156 mg, 284 %) and copper (1.7 mg, 172 %) per 100 g.
Is crab a good source of protein?
Crab, purchased cooked has 19.7 g protein per 100 g, 68 % of the energy, which meets the UK threshold for “high protein”.
How these numbers were made
Every figure comes from the UK Composition of Foods Integrated Dataset (CoFID), 2021 edition, record 16-441, Crab, purchased cooked, published by Public Health England under the Open Government Licence v3.0. Main data references: DH, Nutrient analysis of fish and fish products, 2013. Values are per 100 g of the edible part; a fillet is 140 g, one fillet, the usual UK portion for fish and seafood. 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 170 fish and seafood 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: Crab). Checked 5 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.
More fish and seafood
From the same group, with calories per 100 g, and the foods with the most vitamin B12.
More fish and seafood
- Squid, dried313 kcal
- Bloater, grilled251 kcal
- Coley, poached114 kcal
- Haddock, raw75 kcal
- Lemon sole, grilled91 kcal
- Parrot fish, raw83 kcal
- All 170 fish and seafood
Most vitamin B12
- Cockles, boiled0.047 mg
- Winkles, boiled0.036 mg
- Crab, brown meat, purchased cooked0.0224 mg
- Liver, ox, raw0.11 mg
- Liver, ox, stewed0.11 mg
- Liver, lamb, fried0.083 mg
- Vitamin B12 guide