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King Prawns nutrition: calories, protein and iodine

King Prawns are a fresh, whole fish and a NOVA group 1 food, a source of complete protein and iodine, selenium and vitamin B12, with no added sugar or salt. They are a source of selenium, vitamin B12 and phosphorus. Work out the numbers for any portion and age below, then see the full breakdown.

King Prawns nutrition calculator
Calories, sugar and key nutrients by portion. Change the age and every percentage updates.
Key nutrients in this portion

King Prawns nutrition per 100g and per portion

Typical valuesPer 100gPer portion (90g)
Energy9989
Fat0.9g0.8g
of which saturates0.2g0.2g
Carbohydrate0g0g
of which total sugars0g0g
of which added sugars0g0g
of which starch0g0g
Fibre0g0g
Protein24g21.6g
Salt0.5g0.5g

Protein, fat and salt, by age

For meat and fish the numbers that matter most are protein, saturated fat and salt. The tables below set each against age-appropriate guidance.

Protein in King Prawns by age

A serving (about 90g) provides about 21.6g of complete protein, supplying the amino acids the body needs for growth and repair. Because children need less than adults, that portion covers a large share of a younger child's daily protein.

Age groupDaily protein (RNI)In a serving (about 90g)% of that
Adult50g22g
43%
Age 11 to 1745g22g
48%
Age 7 to 1028g22g
77%
Age 4 to 620g22g
108%

Fat in King Prawns: naturally very low

King Prawns are naturally very low in fat, with about 0.81g per portion and 0g of added fat. Only around 0.18g is saturated, well within the daily maximum for every age group.

Age groupMax saturated fatIn a serving (about 90g)% of that
Adult24g0.18g
1%
Age 11 to 1727g0.18g
1%
Age 7 to 1022g0.18g
1%
Age 4 to 618g0.18g
1%

Vitamins and minerals in King Prawns

Percentages are share of the daily Nutrient Reference Value (NRV). Under UK and EU rules a food is a source of a nutrient at 15% NRV per 100g and high in it at 30%.

NutrientPer 100g%NRV /100g%NRV /portion 
Selenium38ug69%62%high in Selenium
Vitamin B122ug68%61%high in Vitamin B12
Phosphorus240mg34%31%high in Phosphorus
Iodine30ug20%18%a source of Iodine
Zinc1.6mg16%14%a source of Zinc

Vitamins and minerals in King Prawns, by age

These tables show how the nutrients compare to daily needs across different ages, using UK Reference Nutrient Intakes (RNIs). This differs from the source of and high in labels above, which use the single adult figure (NRV) set for food packaging. Children's needs are lower, so a portion goes further.

Selenium in King Prawns by age

Selenium helps protect cells from damage and supports the immune system. A serving (about 90g) contains 34ug. Because children need less than adults, that same portion covers a bigger share of a younger child's daily target.

Age groupDaily need (RNI)In a serving (about 90g)% of daily need
Adult75ug34ug
46%
Age 11 to 1770ug34ug
49%
Age 7 to 1030ug34ug
114%
Age 4 to 620ug34ug
171%

Vitamin B12 in King Prawns by age

Vitamin B12 supports red blood cell formation and a healthy nervous system, and is found almost only in animal foods. A serving (about 90g) contains 2ug. Because children need less than adults, that same portion covers a bigger share of a younger child's daily target.

Age groupDaily need (RNI)In a serving (about 90g)% of daily need
Adult2ug2ug
102%
Age 11 to 172ug2ug
102%
Age 7 to 101ug2ug
153%
Age 4 to 61ug2ug
191%

Phosphorus in King Prawns by age

Phosphorus works with calcium to build strong bones and teeth. A serving (about 90g) contains 216mg. Because children need less than adults, that same portion covers a bigger share of a younger child's daily target.

Age groupDaily need (RNI)In a serving (about 90g)% of daily need
Adult550mg216mg
39%
Age 11 to 17775mg216mg
28%
Age 7 to 10550mg216mg
39%
Age 4 to 6450mg216mg
48%

Iodine in King Prawns by age

Iodine is needed to make thyroid hormones that regulate metabolism and support brain development. A serving (about 90g) contains 27ug. Because children need less than adults, that same portion covers a bigger share of a younger child's daily target.

Age groupDaily need (RNI)In a serving (about 90g)% of daily need
Adult140ug27ug
19%
Age 11 to 17130ug27ug
21%
Age 7 to 10110ug27ug
25%
Age 4 to 6100ug27ug
27%

Zinc in King Prawns by age

Zinc supports the immune system, wound healing and normal growth. A serving (about 90g) contains 1.44mg. Because children need less than adults, that same portion covers a bigger share of a younger child's daily target.

Age groupDaily need (RNI)In a serving (about 90g)% of daily need
Adult9.5mg1.44mg
15%
Age 11 to 179mg1.44mg
16%
Age 7 to 107mg1.44mg
21%
Age 4 to 66.5mg1.44mg
22%

Are King Prawns processed?

No. King Prawns are a fresh, whole fish and a NOVA group 1 food, cooked from its natural state with nothing added, which is very different from processed meats and ready meals.

King Prawns nutrition FAQ

How many calories are in king prawns?

A serving (about 90g) has about 89 calories.

How much protein is in king prawns?

A serving (about 90g) has about 21.6g of complete protein, the kind that supports growth and repair.

Are king prawns good for you?

Yes. King Prawns are a NOVA group 1 source of complete protein and iodine, selenium and vitamin B12, with very little that needs limiting.

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Nutrition data from McCance and Widdowson and UK FoodData Central, per 100g raw edible portion; values are reference figures and can vary by variety and ripeness. Reference intakes: EU NRVs for labelling and UK RNIs (SACN) for age-based needs. For guidance only.