How Long to Cook a Turkey: Times by Weight, Thawing and a Thanksgiving Timeline

Updated 12 November 2026 · Written by the Digital Calculators team · How we made this guide

If you are wondering how long to cook a turkey, the short answer from the U.S. Department of Agriculture is: at an oven temperature of 325 °F, allow roughly 3 to 3¾ hours for a 12 to 14 lb unstuffed bird and 3¾ to 4¼ hours for a 14 to 18 lb one. The longer answer is that the clock only gets you close. Weight, whether the bird is stuffed, how cold it was when it went in, and your own oven all move the finish time, which is why the USDA’s real rule is a temperature, not a time: 165 °F in three places.

This guide puts the official numbers in one place and turns them into a plan you can actually follow on the day. You will find the full roasting timetable, how long each thawing method takes, a worked hour-by-hour Thanksgiving schedule for a 16 lb turkey, what to do if the bird is still frozen on the morning itself, and how to store the leftovers. Our free turkey calculator is built into the page, so you can plug in your own weight and dinner time as you read.

Turkey cooking times by weight (325 °F)

The USDA Food Safety and Inspection Service (FSIS) publishes one timetable for a conventional oven set to 325 °F, which is also the lowest temperature it recommends for roasting a turkey. The times below are taken straight from that table. They assume the turkey is fully thawed and sits on a rack in a shallow roasting pan.

Two things stand out. First, the ranges overlap and are wide, sometimes 45 minutes from the low end to the high end, because turkeys of the same weight differ in shape, and ovens differ in how accurately they hold temperature. Second, stuffing adds time at every size, because the stuffing in the middle of the bird has to heat all the way to 165 °F too.

The USDA gives times by weight range rather than “minutes per pound”. If you want a rough rule of thumb, divide the range by the weight: a 14 to 18 lb unstuffed bird at 3¾ to 4¼ hours works out at roughly 12½ to 18 minutes a pound, but the table is the better guide because the time per pound falls as turkeys get bigger.

Use the calculator below to look up your exact weight, choose stuffed or unstuffed, and get a full schedule worked backward from the time you want to eat.

How many pounds of turkey per person?

Buying the right size is the first decision, and it fixes everything else, from how many days you need to thaw to when the oven goes on. USDA’s guidance is simple:

• Fresh or frozen whole turkey: allow 1 lb per person.
• Frozen pre-stuffed turkey: allow 1¼ lb per person.

So for 12 guests you would buy a turkey of about 12 lb, or 15 lb if it is a frozen pre-stuffed bird. The weight includes bones, so 1 lb per person gives everyone a generous plate with a little left over. If you want plenty of leftovers for sandwiches, go one size range up rather than buying a second, smaller bird.

Buy a fresh turkey only 1 to 2 days before you cook it and keep it in the fridge on a tray to catch any juices. The USDA advises against buying a fresh pre-stuffed turkey, because bacteria in the stuffing can multiply quickly if it is not handled properly. Frozen pre-stuffed turkeys that carry the USDA or a State mark of inspection are safe because they are processed under controlled conditions, and they must be cooked from frozen, not thawed first.

How long to thaw a turkey

Thawing is where most turkey plans go wrong, simply because it takes far longer than people expect. USDA lists three safe methods: in the refrigerator, in cold water, and in the microwave. Thawing on the counter is not one of them.

In the refrigerator (40 °F or below)

Allow about 24 hours for every 4 to 5 pounds. The USDA’s own ranges are:

For a 16 lb turkey that means 3.2 to 4 days. To be safe, start on the Sunday before a Thursday dinner (Sunday 22 November for Thanksgiving 2026). Keep the bird in its original wrapper on a tray. A turkey thawed in the fridge can stay there for another 1 to 2 days once thawed, so starting a day early costs you nothing, and if plans change it can even be refrozen.

In cold water

Allow about 30 minutes per pound, which is 8 hours for a 16 lb turkey. Wrap the bird securely so water cannot leak in, submerge it in cold tap water and change the water every 30 minutes. Cook it immediately after it has thawed and do not refreeze it. This is the rescue method if you forgot to move the turkey to the fridge in time, but it takes constant attention.

In the microwave

Only practical for small birds. Check your microwave’s manual for the largest turkey it can take, the minutes per pound and the power level. Remove all wrapping, put the turkey on a microwave-safe dish, and cook it immediately afterward. Do not refrigerate or refreeze a turkey thawed in the microwave.

Whichever method you use, remember to remove the giblets from the cavities after thawing and cook them separately.

A worked Thanksgiving timeline (16 lb turkey, dinner at 3 pm)

Here is how the numbers fit together for one realistic case: a frozen 16 lb turkey, roasted unstuffed, with dinner planned for 3:00 pm on Thursday 26 November 2026. We used the top of the USDA range, because a turkey that finishes early can rest under foil, while one that finishes late holds up the whole meal.

Notice that the turkey goes in shortly before 10:25 am. People are often surprised by how early that is, especially once they add 30 minutes for the oven to heat. If your oven is also needed for side dishes, plan them for the 20-minute rest and for the window after you first start checking the temperature.

Want a different dinner time, weight or a stuffed bird? The calculator at the top of this page builds the same schedule for your own numbers in a few seconds.

How to tell when a turkey is done

The USDA is clear that a whole turkey is safe when it reaches a minimum internal temperature of 165 °F, measured with a food thermometer in three places:

1. the thickest part of the breast,
2. the innermost part of the thigh, and
3. the innermost part of the wing.

If you stuff the bird, the center of the stuffing must also reach 165 °F. You can cook a turkey to a higher temperature if you prefer the texture, but 165 °F is the safety line.

Pop-up timers and pink meat

Many turkeys come with a pop-up indicator. The USDA still recommends checking the thigh, wing and breast with a thermometer, because the pop-up only tells you about one spot. Color is not a reliable guide either. According to the FSIS, turkey can stay pink even after it has reached a safe 165 °F, and smoked turkey is always pink. The thermometer is the only way to know.

Where to put an oven-safe thermometer

If you have an oven-proof thermometer, put it in at the start of cooking so you can watch the temperature without opening the oven. For a whole turkey, the USDA suggests placing it in the thickest part of the inner thigh. Once the thigh reads 165 °F, check the wing and the thickest part of the breast with a second reading before you take the turkey out.

Stuffed or unstuffed?

For the best safety, the USDA does not recommend stuffing the turkey. Cooking the stuffing separately in a casserole dish gives more even cooking, and it shortens the roasting time, as the timetable shows. Many cooks also find that an unstuffed bird roasts more evenly, because heat reaches the center of the cavity faster.

If you do want to stuff it, follow these USDA steps:

• Prepare the ingredients ahead if you like, but keep wet and dry ingredients separate and chill the wet ones (butter, cooked celery and onions, broth).
• Mix them only just before you fill the turkey, and fill the cavities loosely.
• Put the turkey in the oven straight away.
• Check that the center of the stuffing reaches 165 °F, and remove all the stuffing from the cavities once the turkey comes out.

Stuffed turkeys take longer at every size. For a 14 to 18 lb bird the difference is small (4 to 4¼ hours stuffed against 3¾ to 4¼ unstuffed), but the stuffing must still reach 165 °F, which can keep the turkey in the oven past the end of the range.

Can you cook a turkey from frozen?

Yes. If Thursday morning arrives and the turkey is still a block of ice, the USDA says it is safe to cook it from frozen. The catch is time: it will take at least 50 percent longer than a fully thawed turkey. For our 16 lb example that turns 3¾ to 4¼ hours into at least 5 h 38 min to 6 h 22 min.

The giblet packet will be frozen inside the bird. Remove it carefully with tongs or a fork during cooking, once it has loosened. Then check the 165 °F temperatures exactly as you would for a thawed turkey.

A partly thawed turkey sits somewhere in between. In that case, start checking the temperature at the end of the normal range and keep going until all three spots reach 165 °F.

Tips for an evenly cooked turkey

The FSIS lists a few optional techniques that help a turkey cook evenly and stay moist:

• Tuck the wing tips under the shoulders (sometimes called “akimbo”) so they do not overcook.
• Add half a cup of water to the bottom of the roasting pan.
• Tent with foil. If your pan has no lid, a loose tent of heavy-duty foil for the first 1 to 1½ hours keeps the bird moist and reduces splatter. You can also put foil over the turkey later if the skin is browning too fast.
• Use a rack in a shallow pan so hot air reaches the underside.
• Follow the bag instructions if you use an oven cooking bag, since times differ.

Two habits matter as much as any technique. Keep the oven door shut as much as you can, because every opening lets heat out and adds minutes. And wash your hands, utensils, the sink and anything else that has touched raw turkey or its juices with soap and water.

Resting, carving and leftovers

Let the turkey stand for 20 minutes before carving. The USDA notes that this allows the juices to set and makes carving easier. Cover it loosely with foil while it rests.

Leftovers are where food safety slips after the meal. The USDA rules are:

• Discard any turkey, stuffing or gravy left at room temperature for more than 2 hours, or more than 1 hour if it is above 90 °F.
• Divide leftovers into smaller portions in covered, shallow containers so they cool quickly in the fridge or freezer.
• Use refrigerated turkey, stuffing and gravy within 3 to 4 days.
• Frozen leftovers are best used within 2 to 6 months.

To reheat, set the oven no lower than 325 °F and heat the turkey to 165 °F, adding a little broth or water and covering it to keep it moist. In a microwave, cover the food, rotate it for even heating, allow standing time and check it reaches 165 °F.

Frequently asked questions

How long do you cook a 20 lb turkey?

At 325 °F, USDA gives 4¼ to 4½ hours for an unstuffed 18 to 20 lb turkey and 4½ to 5 hours for 20 to 24 lb. Stuffed, allow 4¼ to 4¾ hours for 18 to 20 lb. Check that it reaches 165 °F.

How long does it take to cook a 12 lb turkey?

An unstuffed 8 to 12 lb turkey takes about 2¾ to 3 hours at 325 °F, and 3 to 3½ hours if it is stuffed.

What temperature should I cook a turkey at?

USDA says to set the oven no lower than 325 °F. Its roasting timetable is based on that temperature.

What internal temperature is a turkey done?

165 °F in the thickest part of the breast, the innermost thigh and the innermost wing. If stuffed, the stuffing must also reach 165 °F.

How many days does it take to thaw a turkey in the fridge?

About 24 hours for every 4 to 5 pounds: 3 to 4 days for 12 to 16 lb, 4 to 5 days for 16 to 20 lb and 5 to 6 days for 20 to 24 lb.

Can I cook a frozen turkey?

Yes. USDA says it is safe, but cooking takes at least 50% longer than for a thawed turkey. Remove the giblet packet with tongs once it loosens.

How long should a turkey rest before carving?

About 20 minutes, so the juices set and the meat is easier to carve.

How big a turkey do I need?

Allow 1 lb of turkey per person, or 1¼ lb per person for a frozen pre-stuffed turkey. For 12 guests that is about a 12 lb bird.

How long are turkey leftovers good for?

Use refrigerated turkey, stuffing and gravy within 3 to 4 days. Frozen leftovers keep best for 2 to 6 months.

Sources

1. Let's Talk Turkey: A Consumer Guide to Safely Roasting a Turkey, USDA Food Safety and Inspection Service (updated 17 Nov 2023). Roasting and thawing timetables, 165 °F rule, stuffing, frozen cooking, resting and leftovers.
2. Is Pink Turkey Meat Safe?, USDA Food Safety and Inspection Service. Why color is not a reliable sign of doneness.