How much protein is in chicken breast?
A medium roasted chicken breast (4.2 oz, 120 g) has 36.3 g of protein. A small chicken breast has 31.7 g and a large one 40.8 g. Per 3.5 oz (100 g): 30.2 g.
Numbers are for the USDA entry Chicken breast, baked, broiled, or roasted, skin not eaten, from raw. Other forms are compared below.
Protein in chicken breast by size and measure
| Measure | Weight | Protein | Calories | % DV |
|---|---|---|---|---|
| 1 cup (cooked, diced) | 4.8 oz (135 g) | 40.8 g | 217 calories | 82% |
| 1/2 cup | 2.4 oz (68 g) | 20.4 g | 109 calories | 41% |
| 1 large breast | 4.8 oz (135 g) | 40.8 g | 217 calories | 82% |
| 1 medium breast | 4.2 oz (120 g) | 36.3 g | 193 calories | 73% |
| 1 small breast | 3.7 oz (105 g) | 31.7 g | 169 calories | 63% |
| 1 large slice | 3 oz (85 g) | 25.7 g | 137 calories | 51% |
| 1 medium slice | 2.1 oz (60 g) | 18.1 g | 97 calories | 36% |
| 1 small slice | 1.1 oz (30 g) | 9.1 g | 48 calories | 18% |
| 1 oz | 28 g | 8.6 g | 46 calories | 17% |
| 3 oz | 85 g | 25.7 g | 137 calories | 51% |
| 4 oz | 113 g | 34.3 g | 183 calories | 69% |
| 6 oz | 170 g | 51.4 g | 274 calories | 103% |
| 8 oz | 227 g | 68.5 g | 365 calories | 137% |
| 100 g | 3.5 oz | 30.2 g | 161 calories | 60% |
| 1 lb | 454 g | 137.1 g | 730 calories | 274% |
Weights are the household measures USDA lists for this exact food. % DV uses the FDA Daily Value of 50 g.
Protein per calorie
Roasted chicken breast gives 18.8 g of protein per 100 calories. About 75% of the calories come from protein, counting 4 calories per gram. How much chicken breast makes 30 g of protein.
Raw, cooked and other forms
Per 100 g, the 9 USDA entries below range from 24.7 g in chicken breast, stewed, skin eaten to 30.2 g in chicken breast, baked, broiled, or roasted, skin not eaten.
| USDA entry | Per 100 g | Per serving | Water |
|---|---|---|---|
| Chicken breast, baked, broiled, or roasted, skin not eaten | 30.2 g | 36.3 g per 1 medium breast (120 g) | 64.1% |
| Chicken breast, baked, broiled, or roasted with marinade, skin not eaten | 29.1 g | 35 g per 1 medium breast (120 g) | 62.9% |
| Chicken breast, stewed, skin not eaten | 28 g | 39.1 g per 1 medium breast (140 g) | 66.8% |
| Chicken breast, baked, broiled, or roasted, skin eaten | 26.2 g | 34.1 g per 1 medium breast (130 g) | 63.2% |
| Chicken breast, sauteed, skin not eaten | 29.6 g | 35.5 g per 1 medium breast (120 g) | 62.9% |
| Chicken breast, rotisserie, skin not eaten | 28 g | 16.8 g per 1 medium slice (60 g) | 67.8% |
| Chicken breast, baked, broiled, or roasted with marinade, skin eaten | 25.3 g | 32.9 g per 1 medium breast (130 g) | 62% |
| Chicken breast, stewed, skin eaten | 24.7 g | 37 g per 1 medium breast (150 g) | 65.3% |
| Chicken breast, fried, coated, skin / coating not eaten | 29.6 g | 35.5 g per 1 medium breast (120 g) | 62.9% |
Each row is a separate USDA entry with its own household measure. A dash means USDA lists no comparable measure for that entry.
Keep exploring
Sources
Nutrients and household measures: USDA FoodData Central, April 2026 release (accessed 2026-10-14)
- Chicken breast, baked, broiled, or roasted, skin not eaten: Chicken breast, baked, broiled, or roasted, skin not eaten, from raw, FDC ID 2705956 (FoodData Central survey (FNDDS) 2024-10-31)
- Chicken breast, baked, broiled, or roasted with marinade, skin not eaten: Chicken breast, baked, broiled, or roasted with marinade, skin not eaten, from raw, FDC ID 2705962 (FoodData Central survey (FNDDS) 2024-10-31)
- Chicken breast, stewed, skin not eaten: Chicken breast, stewed, skin not eaten, FDC ID 2705966 (FoodData Central survey (FNDDS) 2024-10-31)
- Chicken breast, baked, broiled, or roasted, skin eaten: Chicken breast, baked, broiled, or roasted, skin eaten, from raw, FDC ID 2705955 (FoodData Central survey (FNDDS) 2024-10-31)
- Chicken breast, sauteed, skin not eaten: Chicken breast, sauteed, skin not eaten, FDC ID 2705972 (FoodData Central survey (FNDDS) 2024-10-31)
- Chicken breast, rotisserie, skin not eaten: Chicken breast, rotisserie, skin not eaten, FDC ID 2705964 (FoodData Central survey (FNDDS) 2024-10-31)
- Chicken breast, baked, broiled, or roasted with marinade, skin eaten: Chicken breast, baked, broiled, or roasted with marinade, skin eaten, from raw, FDC ID 2705961 (FoodData Central survey (FNDDS) 2024-10-31)
- Chicken breast, stewed, skin eaten: Chicken breast, stewed, skin eaten, FDC ID 2705965 (FoodData Central survey (FNDDS) 2024-10-31)
- Chicken breast, fried, coated, skin / coating not eaten: Chicken breast, fried, coated, skin / coating not eaten, from raw, FDC ID 2705974 (FoodData Central survey (FNDDS) 2024-10-31)
How we calculate: every amount is the USDA value per 3.5 oz (100 g) scaled to the gram weight USDA lists for that measure. 1 oz = 28.35 g and 1 lb = 453.6 g. Daily Values: FDA, 21 CFR 101.9, for adults and children 4 years and older. A dash (—) means USDA reports no value. How we verify.