Turkey Cooking Time Calculator

Calculate turkey cooking time and temperature by weight. See timeline from oven to table.

By Konstantin Iakovlev · Updated September 2026 · Source: USDA FSIS — Let's Talk Turkey: A Consumer Guide to Safely Roasting a Turkey

lbs
Stuffed?

Turkey Size

18.0 lbs

Cooking Time

3h 54m

Total Time

4h 24m

Cooking Timeline

Recommended Turkey Weight18.0 lbs
Oven Temperature325°F
Cooking Time (13 min/lb)3h 54m
USDA timetable for this size (325°F)3h 45m – 4h 15m
Internal Temperature Target165°F
Resting Time30 min
Total Oven to Table4h 24m

Tips

  • Thaw in the refrigerator: about 24 hours for every 4-5 lbs of turkey
  • Never thaw or leave the turkey out at room temperature; thaw it in the refrigerator, in cold water or in the microwave
  • Check 165°F in the innermost thigh, the innermost wing and the thickest part of the breast
  • Resting allows juices to redistribute for a moister bird

Use the Turkey Cooking Time Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only. Results are estimates based on the information you provide and the assumptions described on this page.

How It Works

Getting the bird out of the oven on time is the hardest part of hosting Thanksgiving or Christmas, and this tool takes some of the guesswork out of it. Enter your guest count and how many pounds of turkey to allow per person, and you'll get back the size of bird to buy, the oven temperature, an estimated roasting time and the total time from oven to table including the rest.

Several factors drive the estimate: the weight of the bird, whether it's stuffed or unstuffed, and the 165°F (74°C) internal temperature that food safety requires. The calculator uses 13 minutes per pound at 325°F (160°C) for an unstuffed turkey and 15 minutes per pound for a stuffed one, since the dense cavity slows how fast warmth reaches the center. The schedule then adds a 30-minute rest before carving; USDA's Food Safety and Inspection Service (FSIS) suggests 20 minutes. These per-pound rates are a rule of thumb and don't match USDA's roasting timetable at every size: FSIS lists 3¾ to 4¼ hours for an unstuffed 14-to-18-pound turkey at 325°F, while 13 minutes a pound gives about 3¼ hours for 15 pounds, so start early and let the thermometer decide.

Ovens rarely run true to their dials, so confirm doneness with a food thermometer: FSIS says to check the innermost part of the thigh and wing and the thickest part of the breast, and all three should read 165°F. Packing the cavity tight drives the cook time up and invites uneven results; FSIS recommends cooking stuffing in a separate casserole, and if you do stuff the bird, fill it loosely and make sure the center of the stuffing also reaches 165°F. That resting stretch after the bird leaves the oven matters just as much as the roasting itself, because cutting in early lets the juices run out and leaves the meat dry.

Example: Thanksgiving Turkey for 20

  1. 1 Input: 20 guests at 1 pound per person (the USDA allowance), unstuffed, for Thanksgiving dinner on Thursday, November 26, 2026.
  2. 2 Turkey size: 20 × 1 = 20 lbs. Roasting time: 20 × 13 minutes = 260 minutes, or 4 hours 20 minutes at 325°F, which falls inside FSIS's 4¼ to 4½ hours for an unstuffed 18-to-20-pound bird.
  3. 3 Add the 30-minute rest and the total from oven to table is 4 hours 50 minutes, so to carve at 6:00 PM the turkey goes in at about 1:10 PM. It's done when the thigh, wing and breast all read 165°F, whatever the clock says.
  4. 4 If the turkey is frozen, FSIS allows 4 to 5 days in the refrigerator for a 16-to-20-pound bird, so move it from the freezer to the fridge on Saturday, November 21 or Sunday, November 22.

Frequently Asked Questions

How long does it take to cook a turkey per pound?
USDA's roasting timetable at 325 degrees F gives an unstuffed 14-to-18-pound turkey 3¾ to 4¼ hours and a stuffed one 4 to 4¼ hours; a 20-to-24-pound bird needs 4½ to 5 hours unstuffed. This calculator uses 13 minutes per pound (15 if stuffed), which comes out shorter for many mid-size birds, so treat its time as a starting point and go by the thermometer.
What temperature should a turkey be when done?
The USDA's safe minimum is 165 degrees F, checked in the innermost part of the thigh and wing and the thickest part of the breast. Let the turkey rest before carving: FSIS suggests 20 minutes, and this calculator allows 30.
How much turkey do I need per person?
USDA's Food Safety and Inspection Service says to allow 1 pound of turkey per person (1¼ pounds for a frozen pre-stuffed turkey), so 12 guests need about a 12-pound bird. This calculator defaults to 1.5 pounds per person, an 18-pound turkey for 12, to leave room for leftovers.