Food comparison · USDA values
Chicken Breast vs Chicken Breast (Roasted): Calories & Nutrition Compared
Quick answer
Per 100 g, Chicken Breast has fewer calories than Chicken Breast (Roasted) (120 vs 165 kcal), and Chicken Breast (Roasted) has more protein than Chicken Breast (31 vs 22.5 g).
Side by side per 100 g
Equal weights, so the columns compare the foods themselves. The last column shows which food has more, and stays at "About the same" when the gap is too small to matter.
| Per 100 g | Chicken Breast | Chicken Breast (Roasted) | Difference |
|---|---|---|---|
| Calories | 120 kcal | 165 kcal | Chicken Breast (Roasted) +45 kcal |
| Protein per 100 kcal | 18.8 g | 18.8 g | About the same |
| Protein | 22.5 g | 31 g | Chicken Breast (Roasted) +8.5 g |
| Carbs | 0 g | 0 g | About the same |
| Fat | 2.6 g | 3.6 g | Chicken Breast (Roasted) +1 g |
| Fiber | 0 g | 0 g | About the same |
| Sugars | 0 g | 0 g | About the same |
| Sodium | 45 mg | 74 mg | Chicken Breast (Roasted) +29 mg |
- Protein 79% · 22.5 g
- Carbs 0% · 0 g
- Fat 21% · 2.6 g
- Protein 79% · 31 g
- Carbs 0% · 0 g
- Fat 21% · 3.6 g
Per portion
One USDA household portion of each food. The portions weigh different amounts, so this is the comparison for what ends up on the plate.
| Food | Portion | Weight | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|---|
| Chicken Breast | 4 oz | 113 g | 136 kcal | 25.4 g | 0 g | 3 g |
| Chicken Breast (Roasted) | 1/2 breast | 86 g | 142 kcal | 26.7 g | 0 g | 3.1 g |
The difference, worked out
- Chicken Breast (Roasted) has more calories per 100 g than Chicken Breast: 165 vs 120 kcal, a difference of 45 kcal.
- Chicken Breast (Roasted) has more protein per 100 g than Chicken Breast: 31 vs 22.5 g, a difference of 8.5 g.
- Chicken Breast and Chicken Breast (Roasted) have about the same carbs per 100 g: 0 vs 0 g.
- Chicken Breast (Roasted) has more fat per 100 g than Chicken Breast: 3.6 vs 2.6 g, a difference of 1 g.
- Chicken Breast and Chicken Breast (Roasted) have about the same fiber per 100 g: 0 vs 0 g.
- Chicken Breast and Chicken Breast (Roasted) give about the same protein for the same calories: 18.8 vs 18.8 g per 100 kcal.
- Chicken Breast and Chicken Breast (Roasted) have about the same calories per portion: 136 vs 142 kcal (the two portions weigh different amounts).
- Chicken Breast and Chicken Breast (Roasted) have about the same protein per portion: 25.4 vs 26.7 g (the two portions weigh different amounts).
Every figure is computed from the two foods' USDA values, rounded as printed above. A difference is stated only when it is at least 10% of the larger value and clears a small minimum for the nutrient, so tiny gaps are not dressed up as findings.
Our take
Raw chicken breast shows fewer calories and less protein per 100 g than roasted, but that gap largely reflects a raw weight against a cooked weight, not a different food. Match the entry to how you weigh it: raw weight with the raw figures, cooked weight with the cooked ones.
Raw and cooked values describe different things. Cooking changes how much water a food holds, so the same weight of cooked food carries a different amount of calories and protein than the same weight of raw. Log a food in the state you weighed it.
Full amount tables, portions and every nutrient: see Chicken Breast and Chicken Breast (Roasted).

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Start free on the webValues are USDA averages for the foods as described on their pages; a single piece varies with variety, ripeness and preparation. This is general information, not medical advice. If you are pregnant, under 18 or managing a health condition, talk to a doctor or registered dietitian before changing how you eat.
Source: USDA FoodData Central, Chicken Breast (FDC 171077) and Chicken Breast (Roasted) (FDC 171477). How we calculate.