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% of its weight on a grill, coming off at about 140g. Multiply either way and you land in nearly the same place: 200g raw at 120 kcal is 240 kcal, and 140g grilled at 165 kcal is 231 kcal. The gap is the fat and juice that drip off, plus rounding.

This is the single most common tracking error with chicken. Weighing raw and logging the grilled figure overstates a portion by more than 40%.

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

Supermarket boneless skinless breasts vary far more than people expect, from about 170g raw to well past 300g for the big ones sold in the US, so counting breasts is a poor way to log them. A 200g raw breast grills down to about 140g, which is 231 kcal and 43g of protein. Two of those at dinner is about 460 kcal and 87g of protein, more than the 56g a day the RDA sets for a 70 kg adult.

How much the weight drops depends on the method, and the calculator uses a different figure for each: about 30% on a grill or in the oven, 24% when poached, 32% in a hot pan, and only 5% when breaded and fried, because the coating soaks up oil while the meat inside loses water. Those are the same figures the protein in chicken calculator uses, so the two pages agree on any portion.