Chicken Breast Calorie Calculator

Chicken breast is about as calorie-efficient as protein gets, but the number on your tracker swings by a factor of two depending on how it was cooked and, more often, on whether you weighed it before or after.

Calories and protein per 100g, at the weight stated:

Why cooked chicken looks more calorific than raw

It is not. Water evaporates during cooking, so the same meat weighs less afterwards and everything per gram goes up. A 200g raw breast loses roughly 30 to 35% of its weight on a grill, coming off at about 130 to 140g. Multiply either way and you land in the same place: 200g raw at 120 kcal is 240 kcal, and 135g grilled at 165 kcal is 223 kcal. The gap is oil and rounding, not physics.

This is the single most common tracking error with chicken. Weighing raw and logging the cooked figure overstates a portion by about half.

Breading and oil

Fried is the outlier, and the 250 kcal figure is a middle estimate rather than a number to trust. A dry-dredged restaurant cutlet and a thick hand-battered one absorb very different amounts of oil, easily 100 kcal apart on the same piece of chicken. Note too that protein per 100g falls when fried, because a chunk of the weight is now flour.

A rough sense of scale

A supermarket boneless skinless breast runs 170 to 200g raw, which grills down to 120 to 140g and 200 to 230 kcal. Two of them at dinner is roughly 400 to 460 kcal carrying about 80g of protein, which for most adults is more protein than a whole day’s minimum requirement in one meal.