How to Calculate Turkey Cooking Time in 4 Easy Steps

Turkey cooking time in one line

Turkey cooking time is simple: the bird’s weight in pounds times the minutes per pound for your oven temperature and stuffing choice, plus resting time. A 13-lb unstuffed turkey at 325°F needs 13 × 13 = 169 minutes, about 2 hours 49 minutes, and then 20 minutes of rest before carving. Everything else in this guide is about getting the two inputs right: the true weight and the right minutes per pound.

Step 1: Weigh the bird, honestly

Use the weight on the label, or weigh the bird yourself if the label is gone. A bird labelled 13 lb is 13 lb for this purpose, even if the giblets and neck add a few ounces inside — the minutes-per-pound figures already assume a whole bird with giblets removed. Do not guess from the size of the pan or the look of the bird: a 2 lb error moves the cooking time by 26 minutes, which is the difference between juicy and dry. If you bought the bird from the turkey size calculator for 10 guests, you already have the number: 13 lb.

Step 2: Pick minutes per pound

At 325°F, allow 13 minutes per pound for an unstuffed turkey and 15 minutes per pound for a stuffed one, because the stuffing must itself reach a safe temperature and slows the bird. At 350°F the figures drop to about 12 and 13 minutes, but 325°F is the steadier choice for a big bird: it browns evenly without drying the breast. Higher heat is not a shortcut worth taking on a holiday bird, since an unevenly cooked turkey is worse than a slightly slower one.

Step 3: Multiply, then add the rest

Now the arithmetic. Unstuffed: 13 lb × 13 minutes = 169 minutes, or 2 hours 49 minutes. Stuffed: 13 lb × 15 minutes = 195 minutes, or 3 hours 15 minutes. Then add 20 minutes of rest, during which the bird keeps cooking gently and the juices settle — carving straight out of the oven loses those juices to the board. Plan backwards from dinner: for a 5 pm carve, an unstuffed 13-lb bird goes in at about 1:50 pm and comes out at 4:40 pm.

Step 4: Check the result with a thermometer

Before you trust 169 minutes, check the thickest part of the thigh with a meat thermometer: it must read 165°F. Time is an estimate; temperature is the verdict. If the thigh reads below 165°F, give the bird another 15 minutes and check again. If it reads above, tent it loosely with foil and start the rest early. The breast will read a little lower than the thigh, which is normal — the thigh is the slowest part and the one the safety number is written for.

A Thanksgiving in numbers

Suppose your table holds 12 guests and you sized the bird at 15 lb instead of 13. Unstuffed at 325°F, that bird needs 15 × 13 = 195 minutes, 3 hours 15 minutes, plus 20 minutes of rest. The same table with a stuffed 13-lb bird needs 195 minutes too — stuffing costs about as much time as 2 extra pounds of bird.

Common mistakes

The most common mistake is cooking from a guessed weight, which shifts the whole result. The second is skipping the rest: a bird carved immediately looks done and eats dry. The third is trusting the pop-up timer alone — those timers pop late, at temperatures above 165°F, and say nothing about the thigh. The fourth is stuffing the bird the night before, which lets bacteria grow in the stuffing; stuff just before roasting, or cook the stuffing separately and save 26 minutes.

Worked example, start to finish

10 guests, one 13-lb bird, unstuffed, 325°F. Weight: 13 lb. Minutes per pound: 13. Cooking time: 13 × 13 = 169 minutes, 2 hours 49 minutes. Rest: 20 minutes. Timeline for a 5 pm carve: into the oven at 1:50 pm, out at 4:40 pm, rested and ready at 5 pm. Thermometer check at 4:40 pm: thigh at 165°F or above means carve; below means 15 more minutes and another check. That is the whole method, and it works for any size: weigh, pick, multiply, rest, check.

What changes the answer most

Weight changes the answer most, pound for pound: each pound is 13 minutes, so a 20-lb bird needs a full hour more than a 15-lb one. Stuffing is the second lever, worth about 26 minutes on a 13-lb bird. Oven temperature is third, and the least reliable lever, because ovens vary and opening the door costs heat. If dinner timing is tight, choose the smaller bird or cook the stuffing separately rather than raising the heat.

Feeding a crowd

When the guest list grows past about 16, two smaller birds beat one giant one: two 13-lb birds cook in about 2 hours 49 minutes each, side by side, while a single 26-lb bird needs well over 5 hours and dries out at the edges before the middle is done. Two birds also give you four drumsticks and two breasts to carve, which serves a crowd faster. Size each bird with the turkey size calculator by splitting the guest list in two.

Frequently asked questions