Timing guide
How Long to Bake Chicken Breast at 400°F
A practical timing guide for baking boneless chicken breast at 400°F, with the doneness cue that matters more than the clock.
The short answer
At 400°F (200°C), boneless, skinless chicken breasts usually take about 20 to 25 minutes. Thin cutlets can be done in 12 to 15 minutes, while large breasts over 8 ounces may need closer to 28 to 30.
Time is only a guide because breasts vary so much in size. The finished internal temperature is what actually tells you it is safe and juicy: 165°F at the thickest point.
- Thin cutlets (1/2 inch): about 12–15 minutes.
- Average breast (6–8 oz): about 20–25 minutes.
- Large breast (8 oz+): about 26–30 minutes.
How to keep it juicy at 400°F
Pound the breasts to an even thickness so they cook at the same rate, then pat dry, rub with a little oil, and season. The oil helps the surface brown and holds the seasoning in place.
Start checking a few minutes before the low end of the range. Pull the chicken at 165°F and rest it five minutes; the temperature evens out and the juices settle back into the meat.
Put the method into practice
Recipes that use the techniques in this guide.
Food safety & sources
Cook and store with confidence
The cooking temperatures and storage guidance in our recipes and guides follow official U.S. government food-safety standards. Always confirm doneness with a food thermometer rather than by color or time alone.
- Safe minimum internal temperatures — U.S. Department of Health & Human Services, FoodSafety.gov
- Cold food storage chart — U.S. Department of Health & Human Services, FoodSafety.gov