Chicken breast nutrition facts
Proteins · Cooked, roasted, skinless · per 100 g
Chicken breast (cooked, roasted, skinless) contains 165 kcal per 100 g, with 31 g protein, 0 g carbohydrate (of which 0 g sugar), 3.6 g fat and 0 g fiber. That works out to about 18.8 g of protein per 100 kcal, and its energy density is moderate (150–300 kcal/100 g).
Source: USDA FoodData Central. Data as of June 2026.
Nutrition facts per 100 g
| Nutrient | Per 100 g |
|---|---|
| Calories | 165 kcal |
| Protein | 31 g |
| Carbohydrate | 0 g |
| Fat | 3.6 g |
| Fiber | 0 g |
| Sugar | 0 g |
| Potassium | 256 mg |
| Sodium | 74 mg |
Source: USDA FoodData Central. Data as of June 2026.
What the numbers mean
Energy density tells you how many calories a food packs per gram: chicken breast is moderate (150–300 kcal/100 g). Protein density — grams of protein per 100 kcal — is a useful way to compare foods regardless of portion size; here it is about 18.8 g/100 kcal. Fiber (0 g per 100 g) supports digestion and satiety, while the sugar figure (0 g) is part of total carbohydrate. See our guide on how to read nutrition data for more.
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Frequently asked questions
How many calories are in 100 g of chicken breast?
100 g of chicken breast (cooked, roasted, skinless) contains about 165 kcal, with 31 g protein, 0 g carbohydrate and 3.6 g fat, per USDA FoodData Central.
How much protein is in chicken breast?
Chicken breast provides 31 g of protein per 100 g — roughly 18.8 g of protein per 100 kcal.
Is chicken breast high or low in calories?
At 165 kcal per 100 g, chicken breast has moderate (150–300 kcal/100 g) energy density.
Source
Data from USDA FoodData Central (FDC ID 171477), per 100 g edible portion. Values are for general information only and are not medical or dietary advice; cooking, brand and variety can change the real figures.
Last updated: 2026-06-14