How much protein is in a chicken breast?

An average cooked chicken breast of about 120 g has around 37 g of protein. Per 100 g cooked, it has about 31 g.

How many calories are in a chicken breast?

An average cooked, skinless chicken breast has about 200 kcal. A large one can be 280 kcal.

Calories in chicken breast

Skinless chicken breast is one of the leanest protein foods there is: about 165 kcal and 31 g of protein per 100 g cooked.

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

Chicken breast calories by portion

Portion	Calories	Protein	Carbs	Fat
100 g cooked, skinless	165 kcal	31 g	0 g	3.6 g
Average breast, cooked (120 g)	198 kcal	37.2 g	0 g	4.3 g
Large breast, cooked (170 g)	281 kcal	52.7 g	0 g	6.1 g
100 g raw, skinless	106–120 kcal	22–24 g protein

Chicken breast nutrition per 100 g

Energy	165 kcal (690 kJ)
Protein	31 g
Carbohydrate	0 g
of which sugars	0 g
Fat	3.6 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.

Raw vs cooked weight

Chicken loses water as it cooks, so 100 g of raw breast weighs about 70 to 75 g once cooked. The calories stay the same, so per 100 g, cooked chicken has more calories and protein than raw. Log it the way you weighed it.

With skin and other cuts

Leaving the skin on adds roughly 30 to 50 kcal per 100 g. Skinless chicken thigh has about 180 kcal and 25 g of protein per 100 g cooked, so it is slightly higher in fat but still a good source of protein.

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 much protein is in a chicken breast?: An average cooked chicken breast of about 120 g has around 37 g of protein. Per 100 g cooked, it has about 31 g.
How many calories are in a chicken breast?: An average cooked, skinless chicken breast has about 200 kcal. A large one can be 280 kcal.