How to Use This Calculator
Select the type of meat, choose the cut, enter the weight, and select your cooking method. The calculator returns an estimated cooking time and the safe internal temperature to verify with a thermometer.
Times are based on starting from room temperature. Cold meat straight from the fridge will take longer — add 10–15 minutes per pound for very cold cuts.
Why You Still Need a Thermometer
Cooking times are estimates. Actual time varies based on your oven's accuracy, the shape of the cut, whether it was at room temperature, and how full your oven is. The only reliable way to know meat is safe is to check the internal temperature with an instant-read thermometer. Times give you a starting point; temperature tells you when it's done.
Frequently Asked Questions
How long to cook chicken breast at 400°F?
A boneless chicken breast at 400°F takes approximately 18–22 minutes for a 6oz breast and 22–26 minutes for an 8oz breast. Always verify the thickest part reaches 165°F (74°C).
How long to cook a whole chicken per pound?
A whole chicken roasted at 375°F needs approximately 20 minutes per pound, plus an additional 20 minutes. A 4lb chicken takes about 1 hour 20 minutes. Always check that the thigh meat reaches 165°F.
Does resting time count as cooking time?
No — rest time starts after the meat leaves the heat. However, the internal temperature continues to rise 3–5°F during resting (carryover cooking), which is why you can pull meat off the heat just below your target temperature.
Turkey Breast Cooking Times by Weight
Turkey breast is one of the most common cuts people calculate cooking times for, since whole turkey breasts range widely in size. At 20 minutes per pound in a 325°F oven, here's what that looks like across common weights:
| Weight | Estimated Time |
|---|---|
| 3 lb | ~1h |
| 5 lb | ~1h 40m |
| 7 lb | ~2h 20m |
| 10 lb | ~3h 20m |
These are starting-point estimates — use the calculator above for your exact weight, and always confirm doneness at 165°F in the thickest part of the breast, since bone-in vs boneless and stuffed vs unstuffed shift the actual time.
Pork Cooking Times by Cut
Pork's safe cooking temperature dropped to 145°F (63°C) with a 3-minute rest in USDA guidance, which is lower than many older recipes assume — pork no longer needs to be cooked until fully gray throughout. A pork loin roast at 20 minutes per pound, a pork shoulder for pulled pork at roughly 60-90 minutes per pound (low and slow, until it hits 195-205°F for shredding), and 1-inch pork chops at about 18 minutes per pound are the three most commonly calculated cuts.
How long does a 10 lb turkey breast take to cook?
At 325°F, a 10 lb turkey breast takes approximately 3 hours 20 minutes (20 minutes per pound). Tent with foil if the skin browns too quickly before the center reaches 165°F. Bone-in breasts run closer to the high end of this estimate; boneless breasts often finish a bit faster.
Why is pork chops' safe temperature lower than it used to be?
USDA lowered the recommended pork temperature from 160°F to 145°F (with a 3-minute rest) in 2011, once trichinosis risk from modern commercial pork became negligible. Many older cookbooks and family recipes still reference the outdated 160°F+ standard, which is part of why home-cooked pork is so often overcooked compared to what's actually necessary for safety.
Every time shown here assumes a properly calibrated oven at the stated temperature, a typically shaped cut for its weight, and a starting temperature close to refrigerator-cold. In practice, ovens run 15-25°F off their display, cuts vary in shape even at the same weight, and starting temperature (cold from the fridge vs. rested at room temperature) shifts timing by 10-15%. Use the calculated time as a guide for when to start checking with a thermometer, not as the final word on doneness.
Why did my meat take longer than the calculator estimated?
The most common causes are an oven running cooler than its display, a thicker-than-average cut, or starting from a colder temperature than assumed. If this happens consistently across multiple dishes, check your oven's actual temperature with a separate oven thermometer rather than trusting the dial.