Scale to GramsHow Much Does a Chicken Breast Weigh? Raw, Cooked & Trimmed
Average Raw Chicken Breast Weight
A boneless, skinless chicken breast from the supermarket typically weighs between 170 and 225 grams (6-8 ounces) raw. However, modern chicken breeds have been selectively bred for larger breast meat, so you will frequently find breasts weighing 280-340 grams (10-12 oz) or even more. A bone-in, skin-on chicken breast weighs approximately 340-400 grams (12-14 oz), with the bone accounting for about 20% and the skin about 10% of total weight. When a recipe says "one chicken breast," it generally assumes a 170-200 gram boneless piece.
How Cooking Changes the Weight
Chicken loses weight during cooking as moisture evaporates. The amount of weight loss depends on the cooking method. Grilling causes the most moisture loss — expect about 25-30% weight reduction. A 200g raw breast becomes roughly 140-150g grilled. Baking at 375°F causes about 20-25% loss. Pan-searing with oil retains more moisture — about 15-20% loss. Poaching or sous vide retains the most — only about 10-15% weight loss. This matters enormously for calorie tracking. If you weigh chicken after cooking, you need to use cooked nutrition data. If you weigh it raw, use raw nutrition data. Mixing them up can throw your calorie count off by 25% or more.
Chicken Breast Calories by Weight
Raw boneless skinless chicken breast contains approximately 120 calories per 100 grams, with 23g of protein, 2.6g of fat, and zero carbohydrates. A standard 200g raw breast has about 240 calories and 46g of protein. After cooking, the calorie density increases because water has been lost but the calories remain. Cooked chicken breast contains approximately 165 calories per 100 grams. So a 200g raw breast that shrinks to 150g cooked still has the same 240 calories — the per-gram calorie count just goes up. Always track either all raw or all cooked weights to stay consistent.
Estimating Chicken Breast Weight Without a Scale
A chicken breast roughly the size and thickness of your palm (not including fingers) weighs approximately 115-140 grams (4-5 oz). A breast the size of a deck of cards is approximately 85-100 grams (3-3.5 oz). If the breast is as large as your entire hand including fingers, it is likely 200-250 grams (7-9 oz). For more accurate estimates without a physical scale, photograph the chicken breast next to a reference object (like a fork or knife) and use an AI tool like Scale to Grams to get an instant weight reading.
Tips for Consistent Portion Sizes
If you meal prep with chicken, the most efficient approach is to buy a large pack and weigh individual portions before cooking. Cut oversized breasts in half horizontally (butterfly them) to create pieces in the 140-170g range, which cook more evenly and are easier to portion. If you buy pre-portioned chicken breasts, they are typically trimmed to approximately 170g (6 oz) each. For frozen chicken breasts, the weight listed on the package is the raw weight before freezing — the actual weight after thawing will be very close to this number, as freezing does not significantly change weight.
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