How Long to Cook a Turkey: 5 Simple Steps to Avoid Errors

How Long to Cook a Turkey? The Full Time Guide

How long to cook a turkey depends on its weight, on whether it is stuffed, and on your oven temperature. A 15 pound unstuffed turkey needs 3 hours 45 minutes to 4 hours 15 minutes at 325°F. A 12 pound bird needs 3 hours to 3 hours 45 minutes. The only safe test is a food thermometer reading 165°F in the breast, the thigh, and the wing. Time is a guide, and the thermometer is the answer.

Answer Box 1: A whole turkey roasted at 325°F needs about 15 minutes per pound when it is unstuffed. A 12 pound turkey takes 3 to 3 hours 45 minutes, and a 20 pound turkey takes 4 hours 15 minutes to 4 hours 30 minutes. A stuffed bird needs about 30 minutes more. A frozen bird needs at least 50 percent more time.

Answer Box 2: Start checking the temperature about 30 minutes before the earliest time in the range. Ovens vary, and a bird can finish early. Check the thickest part of the breast and the innermost thigh and wing. All three spots must read 165°F. Then rest the turkey for 20 minutes before you carve it.

How Long to Cook a Turkey by Weight

The USDA table is the trusted source for turkey roasting times. It covers a whole turkey roasted at 325°F, which is the lowest oven temperature the USDA allows for turkey. Lower heat lets bacteria grow, so never roast below 325°F. The times below are ranges, not exact minutes. Every oven runs a little hot or a little cold, and every bird is shaped a little differently.

Notice how the minutes per pound fall as the bird grows. A 10 pound bird needs about 18 minutes per pound. A 20 pound bird needs about 13 minutes per pound. The outside heats first, and a bigger bird has more outside surface for its size. That is why a giant bird does not take twice as long as a medium bird. It takes longer, but not in a straight line.

If your turkey is heavier than 24 pounds, plan for 5 hours or more, and check the oven fit first. A bird that touches the oven walls will burn on the outside before the inside is done. Two smaller birds are the safer plan for a very large crowd. Our size guide explains the math at turkey size calculator.

Stuffed or Unstuffed: How the Time Changes

Stuffing adds about 30 minutes to the roasting time. The stuffing sits in the middle of the bird, which is the last place to heat up. The USDA says the stuffing must reach 165°F in its center, just like the meat. A bird that is done on the outside can still have cold stuffing in the middle. That is the main safety risk with a stuffed turkey.

Many cooks now bake the stuffing in a dish beside the turkey. It cooks in about half the time, it gets a crisp top, and it removes the safety worry. You also free up space inside the bird, which helps the meat cook more evenly. If you love the flavor of stuffing cooked inside the bird, fill the cavity loosely. A packed cavity blocks heat and adds even more time.

A stuffed turkey also needs more care with the thermometer. Check the center of the stuffing as well as the three meat spots. If the meat reads 165°F but the stuffing reads lower, keep cooking. Cover the breast with foil if it starts to brown too much while you wait.

5 Simple Steps to Cook a Turkey on Time

These five steps turn the time table into a dinner plan. Work backward from the time you want to eat. The steps are simple, and they keep the bird hot and the cook calm.

1. Pick your dinner time, then subtract the cooking time. If dinner is at 4 p.m. and your 15 pound bird needs 4 hours, put it in the oven at noon. Add 20 minutes of rest time, so the bird comes out at 3:40 p.m. and rests until 4 p.m.

2. Preheat the oven fully before the bird goes in. An oven that is still heating adds unknown time to the cook. Give it 20 minutes to reach 325°F. Put the rack in the lowest position so the bird sits in the middle of the heat.

3. Check the temperature early, not late. Start checking 30 minutes before the earliest time in the range. A bird that finishes early can rest longer, and rest only makes it juicier. A bird that you find late is already dry.

4. Check three spots with the thermometer. Test the thickest part of the breast, the innermost part of the thigh, and the innermost part of the wing. All three must read 165°F. Do not let the thermometer touch bone, since bone reads hotter than meat.

5. Rest the bird for 20 minutes before carving. The juices need time to settle back into the meat. Tent the turkey loosely with foil while it rests. It will stay hot, and the meat will slice cleanly instead of spilling juice on the board.

How Long to Cook a Turkey Breast

A turkey breast cooks faster than a whole bird, and it is the smart choice for a small table. A bone-in breast of 4 to 7 pounds needs about 2 hours to 2 hours 30 minutes at 325°F. A boneless breast of the same weight needs about 1 hour 30 minutes to 2 hours. The same 165°F rule applies, checked in the thickest part.

A breast also rests for 15 to 20 minutes, just like a whole bird. The smaller size means less waiting, and the oven stays free for side dishes. For 4 to 6 guests, a breast is often a better buy than a whole turkey. It gives every guest white meat, and there is no dark meat left uneaten.

A whole turkey leg or thigh cooks in about 1 hour 30 minutes to 2 hours at 325°F, depending on size. Dark meat is forgiving, and it stays moist even when it cooks past 165°F. Many cooks aim for 175°F in the thigh for the best texture, while the breast stays at 165°F.

Cooking a Turkey From Frozen

A frozen turkey is safe to cook, and the USDA allows it. It needs at least 50 percent more time than a thawed bird of the same weight. A 15 pound frozen turkey needs about 6 hours at 325°F instead of 4. That long cook time is why thawing first is the better plan when you can.

A frozen bird also has one practical problem. The giblet bag sits frozen inside the cavity, and you cannot pull it out until the bird thaws in the oven. Check after about 2 hours of cooking, and remove the bag when it loosens. The neck and giblets can then cook on the side, or go into the stock pot.

Do not stuff a frozen turkey. The stuffing cannot heat up safely when the bird starts frozen. Cook the stuffing in a dish on the side instead. Do not cook a frozen turkey in a slow cooker or a microwave. Those methods heat too slowly and unevenly for a whole bird.

5 Errors That Ruin Turkey Timing

These five errors cause most late dinners and dry birds. Each one is easy to avoid once you know it exists.

1. Trusting the pop-up timer. The plastic pop-up timer pops at a high temperature, often after the breast is already dry. It checks one spot, and it cannot tell you about the thigh or the wing. Use a real food thermometer.

2. Opening the oven door too often. Every peek drops the oven temperature by 25°F or more, and the oven needs minutes to recover. Basting every 30 minutes adds real time to the cook. Roast with the door closed, and baste rarely or never.

3. Cooking at too low a temperature. Never roast below 325°F. A slow oven lets the bird sit in the danger zone, where bacteria grow fast. Low and slow works for beef, but it is not safe for a whole turkey.

4. Forgetting the rest time in the plan. The bird needs 20 minutes of rest after it leaves the oven. Cooks who plan to carve at once either carve a dry bird or serve dinner late. Build the rest into the schedule.

5. Starting the bird too late. A 20 pound turkey needs up to 5 hours, plus rest. Starting it at noon for a 4 p.m. dinner is too late. Work backward from dinner time, and put the bird in early. An early bird can rest longer, and rest never hurts.

What the Thermometer Tells You That Time Cannot

Here is the section other cooking time guides often skip. Time tells you when to start checking, but only the thermometer tells you when the bird is done. Two turkeys of the same weight can finish 30 minutes apart. The difference comes from the oven, the pan, the starting temperature of the meat, and the shape of the bird.

The USDA safe temperature for turkey is 165°F. That number is not a guess. It is the temperature at which the bacteria that cause food poisoning die quickly. The same number applies to the stuffing and to reheated leftovers. The USDA Meat and Poultry Hotline answers this question every year, and the answer is always 165°F.

Check the temperature in three places because the bird does not heat evenly. The breast is thick and it sits on top, so it heats fast. The thigh is dense and it sits low, so it heats slowly. The wing joint hides a cold pocket. A bird that reads 165°F in the breast can still read 150°F in the thigh. Check all three spots, and wait until every spot passes.

An instant-read thermometer costs little and it lasts for years. A leave-in probe thermometer is even better, since it beeps when the meat hits the target. Either tool beats a pop-up timer. Buy one before Thanksgiving, test it in boiling water, and it should read 212°F at sea level. Then trust it on the day.

High Altitude and Convection Ovens

High altitude changes cooking time. Water boils at a lower temperature in the mountains, and ovens run drier. At 5,000 feet, add about 5 to 10 minutes per pound to the roasting time. The thermometer still rules, so check early and check often. The USDA guidance stays the same, but the bird takes longer to reach it.

A convection oven cooks faster than a regular oven. The fan moves hot air around the bird, which browns the skin and cuts the time by about 25 percent. A 4 hour bird in a regular oven may take 3 hours in a convection oven. Lower the temperature by 25°F, to 300°F, or keep 325°F and check much earlier. Many cooks find the skin browns too fast in convection, so tent the breast with foil halfway through.

A roasting bag also changes the time. A turkey in an oven bag cooks about 30 minutes faster than a bird in an open pan. The bag traps steam, which heats the meat evenly. Cut slits in the bag as the maker directs, and do not let the bag touch the oven walls. The meat stays moist, but the skin will not crisp as much.

Frequently Asked Questions

1. How long to cook a 12 pound turkey?

A 12 pound unstuffed turkey takes 2 hours 45 minutes to 3 hours at 325°F. A stuffed 12 pound turkey takes 3 hours to 3 hours 30 minutes. Check 165°F in the breast, thigh, and wing.

2. How long to cook a 20 pound turkey?

A 20 pound unstuffed turkey takes 4 hours 15 minutes to 4 hours 30 minutes at 325°F. A stuffed 20 pound turkey takes 4 hours 45 minutes to 5 hours. Add 20 minutes of rest before carving.

3. How long to cook a turkey per pound?

Plan about 15 minutes per pound for an unstuffed turkey at 325°F. Small birds need a little more per pound, and large birds need a little less. Use the USDA table, not a single number, for the best estimate.

4. What temperature should I cook a turkey at?

Roast at 325°F as a minimum. Most recipes use 325°F or 350°F. Never roast below 325°F, since the bird can sit in the danger zone where bacteria grow.

5. How do I know when my turkey is done?

Use a food thermometer. The thickest part of the breast, the innermost thigh, and the innermost wing must all read 165°F. Time is a guide, and the thermometer is the test.

6. Should I cook my turkey covered or uncovered?

Roast uncovered for crisp, brown skin. Cover the breast loosely with foil if it browns too fast. A covered bird steams more than it roasts, so the skin stays pale and soft.

7. How long should a turkey rest after cooking?

Rest the turkey for about 20 minutes after it leaves the oven. The juices settle back into the meat, and the bird stays hot under a loose foil tent. Carving at once makes the meat dry.

8. Can I cook a turkey at 350°F instead of 325°F?

Yes, 350°F is safe and it cooks the bird a little faster. The skin browns more quickly, so watch it and tent with foil if needed. The 165°F finish temperature stays the same.

9. How long to cook a turkey from frozen?

A frozen turkey needs at least 50 percent more time than a thawed bird. A 15 pound frozen turkey needs about 6 hours at 325°F. Do not stuff a frozen turkey, and remove the giblet bag once it loosens.

10. Does brining change the cooking time?

Brining does not change the cooking time much. A brined bird may cook a little faster because the salt helps heat move through the meat. Start checking 30 minutes early, and trust the thermometer.

11. How long to cook a turkey breast?

A bone-in turkey breast of 4 to 7 pounds takes about 2 hours to 2 hours 30 minutes at 325°F. A boneless breast takes about 1 hour 30 minutes to 2 hours. Check 165°F in the thickest part.

12. Why is my turkey still pink at 165°F?

Pink meat at 165°F is safe to eat. The pink color can come from the bird’s age, the feed, or the gases in the oven. Color is not a safety test. The thermometer reading is the only test that counts.

13. Can I cook two small turkeys instead of one big one?

Yes, two smaller turkeys cook faster and more evenly than one giant bird. Two 12 pound turkeys feed 16 guests, and each takes about 3 hours. They also give you more legs and wings to serve.

Final Word

Plan the cook from the thermometer, not from the clock. Pick your dinner time, subtract the roasting time and the 20 minute rest, and put the bird in the oven on time. Check the temperature early, check three spots, and wait for 165°F everywhere. That is the whole secret to a juicy turkey that lands on the table on time. To pick the right bird size, use our turkey size calculator. To plan every dish on the table, read how much food for thanksgiving per person. To start thawing on the right day, read how long to thaw a turkey.

Learn more about the holiday bird on Wikipedia: Turkey as food.