How many calories are in prawns?

About 85 kcal per 100 g cooked.

Are prawns good for weight loss?

Yes. They are one of the highest protein foods per calorie.

Calories in prawns

Cooked prawns have about 85 kcal and 20 g of protein per 100 g. Values vary a little between brands.

By the Calori team · Updated 21 October 2026 · 3 min read

Prawns calories by portion

Portion	Calories	Protein	Carbs	Fat
100 g cooked	85 kcal	20 g	0 g	0.6 g
Portion (150 g)	128 kcal	30 g	0 g	0.9 g
Prawn cocktail starter	250–350 kcal

Prawns nutrition per 100 g

Energy	85 kcal (356 kJ)
Protein	20 g
Carbohydrate	0 g
of which sugars	0 g
Fat	0.6 g
Fibre	0 g

Typical values. Carbohydrate excludes fibre, as on UK food labels. Brands and varieties differ, so check the label where there is one.

Prawns and sauces

Prawns themselves are very lean. Marie Rose sauce, garlic butter and batter are where the calories come from.

Log it without looking it up

Calori recognises foods like this from a photo and estimates the portion, so you can log a whole plate in one go. Set your daily target with our calorie calculator.

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Frequently asked questions

How many calories are in prawns?: About 85 kcal per 100 g cooked.
Are prawns good for weight loss?: Yes. They are one of the highest protein foods per calorie.