An 8 oz boneless, skinless chicken breast has about 50–52 grams of protein when raw, and roughly 70–73 grams of protein once cooked (because water cooks off and the meat becomes more concentrated).

Quick Scoop

  • 8 oz raw, boneless, skinless breast: about 51–52 g protein.
  • 8 oz cooked breast (same piece, weighed after cooking): about 72–73 g protein.
  • Calories for 8 oz raw, skinless breast: roughly 240–270 kcal , very low in fat and zero carbs.

Why the numbers differ

  • Raw vs cooked: Cooking drives out water, so if you still measure 8 oz after cooking , it’s denser and has more protein per ounce.
  • Skin and bone: Skinless, boneless breast is the lean, high‑protein option; bone or skin lowers protein per 8 oz of “chicken piece” because some of that weight isn’t meat.

Simple rule of thumb

For everyday tracking, many people just use:

  • 8 oz raw skinless breast ≈ 50 g protein
  • 4 oz raw skinless breast ≈ 25 g protein

That keeps your food logging easy while staying very close to the more detailed nutrition data.

Information gathered from public forums or data available on the internet and portrayed here.