A cooked, boneless, skinless chicken breast contains about 32 grams of protein per 100 grams of meat. A typical whole breast weighs around 174 grams after cooking, which delivers roughly 56 grams of protein. That makes chicken breast one of the most protein-dense foods available, with protein accounting for about 80% of its total calories.
Protein by Serving Size
Not every chicken breast is the same size, and most people don’t weigh their food at every meal. Here’s how the protein stacks up across common portions:
- 3 ounces (85g) cooked: about 27 grams of protein. This is roughly the size of a deck of cards and matches the standard serving size on most nutrition labels.
- 4 ounces (113g) cooked: about 36 grams of protein. A common portion for meal-prep containers and restaurant dishes.
- One whole breast (174g) cooked: about 56 grams of protein. This is what you get from a full supermarket chicken breast half, which many people eat in a single sitting.
If you’re tracking protein to hit a daily target, that single whole breast covers roughly a third of the intake recommended for a 180-pound adult focused on muscle maintenance (around 130 to 160 grams per day, depending on activity level).
Raw vs. Cooked Weight
Chicken loses about 25% of its weight during cooking as water evaporates. A raw breast that weighs 230 grams on your kitchen scale will shrink to roughly 174 grams once cooked. The total protein doesn’t change, but the concentration per gram goes up because you’ve removed water. If a recipe or meal plan lists chicken in raw weight, expect fewer grams on your plate but the same protein content. When nutrition labels say “cooked,” they’re reflecting that more concentrated number of 32 grams per 100 grams.
Skin On vs. Skinless
Leaving the skin on doesn’t add meaningful protein. Chicken skin is mostly fat, so a skin-on breast has a higher calorie count (roughly 50 to 70 extra calories per breast) without a real bump in protein. The protein-per-calorie ratio drops noticeably. If you’re eating chicken breast specifically because it’s a lean, high-protein option, skinless is the better choice. If you’re less concerned about total calories and prefer the flavor, the skin won’t sabotage your protein intake, it just comes with extra fat alongside it.
How Chicken Breast Compares to Other Cuts
Chicken breast is the leanest cut on the bird, which is why it leads in protein density. Other parts still provide solid protein, just with more fat in the mix:
- Chicken thigh (skinless, cooked): about 26 grams of protein per 100 grams. Thighs have more fat, which means slightly fewer grams of protein per bite, but they’re still an excellent source.
- Chicken drumstick (skinless, cooked): about 28 grams of protein per 100 grams. Close to breast meat in protein, though a single drumstick is much smaller, so you get fewer total grams per piece.
- Chicken wing (skinless, cooked): about 30 grams of protein per 100 grams. Wings are protein-dense by weight, but each wing is small. You’d need to eat quite a few to match one breast.
For context, other common high-protein foods land in a similar range: canned tuna provides about 26 grams per 100 grams, lean ground beef around 26 grams, and Greek yogurt roughly 10 grams. Chicken breast sits at or near the top of everyday protein sources.
Cooking Method and Protein Content
Grilling, baking, poaching, and pan-searing all preserve the same amount of protein. Heat doesn’t destroy protein in any meaningful way. What changes is the calorie count: pan-frying in oil or butter adds fat calories, while grilling or baking without added fat keeps the breast as lean as possible. Breading and frying a chicken breast can nearly double the calorie count while adding only a trivial amount of protein from the flour or breadcrumbs.
Marinating also doesn’t alter protein content. A sugary marinade adds some carbohydrates, and an oil-based one adds fat, but the protein in the meat itself stays the same.
Hitting Your Protein Goals With Chicken
Most adults benefit from 0.7 to 1.0 grams of protein per pound of body weight daily, with the higher end for people who strength train regularly. A 150-pound person aiming for 120 grams of protein could cover nearly half that target with a single chicken breast at dinner, then fill in the rest across breakfast and lunch with eggs, dairy, legumes, or other sources.
Chicken breast works well for meal prep because the protein content stays stable when refrigerated for three to four days. Slicing it before storing makes it easier to portion accurately without a scale, since a piece about the size and thickness of your palm is close to that 3- to 4-ounce range.