Turkey Cooking Time Calculator — Time and Temp by Weight
Cooking Time
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Internal Temperature Target
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How Turkey Cooking Time Works
Turkey cooking time is determined by the weight of the bird, oven temperature, and whether the cavity is stuffed. The USDA Food Safety and Inspection Service (FSIS) provides official guidelines requiring that all turkey reach a minimum internal temperature of 165 degrees F (74 degrees C) measured in the thickest part of the thigh, the innermost part of the wing, and the center of the stuffing if applicable. According to the National Turkey Federation, Americans consume approximately 46 million turkeys on Thanksgiving alone, making accurate cooking times a matter of both food safety and holiday success.
At the standard roasting temperature of 325 degrees F (163 degrees C), an unstuffed turkey cooks at approximately 13-15 minutes per pound, while a stuffed turkey requires 15-20 minutes per pound. The longer time for stuffed birds accounts for the additional mass that must reach safe temperature in the center. A meat thermometer is the only reliable way to confirm doneness -- visual cues like color or leg wiggle are not accurate indicators. The USDA strongly recommends using an instant-read thermometer inserted into the thigh without touching bone.
The Turkey Cooking Time Formula
The basic formula for estimating turkey cooking time is:
Cooking Time (minutes) = Weight (lbs) x Minutes Per Pound
At 325 degrees F: unstuffed = 15 min/lb; stuffed = 20 min/lb. At 350 degrees F: unstuffed = 13 min/lb; stuffed = 18 min/lb. These are approximations -- actual time varies based on oven accuracy, starting temperature of the bird, and pan type.
Worked example: A 20-pound unstuffed turkey at 325 degrees F: 20 x 15 = 300 minutes = 5 hours. Add 20-30 minutes of resting time after cooking, during which carryover cooking raises internal temperature another 5-10 degrees. For a calorie estimate, a 3.5-ounce serving of roasted turkey breast contains approximately 135 calories.
Key Terms
Internal Temperature: The temperature at the center of the thickest part of the meat. The USDA requires 165 degrees F for all poultry to destroy harmful bacteria including Salmonella and Campylobacter.
Carryover Cooking: After removing the turkey from the oven, residual heat continues to raise the internal temperature by 5-10 degrees F. Many chefs pull the turkey at 160 degrees F and let carryover bring it to 165 degrees F.
Resting Period: The 20-30 minutes the turkey sits before carving. This allows juices to redistribute throughout the meat, resulting in moister slices. Tent loosely with foil to keep warm.
Brining: Soaking the turkey in a salt-water solution for 12-24 hours before cooking. Brining adds moisture and flavor, producing juicier meat, but does not significantly affect cooking time.
Turkey Cooking Time Reference Table
| Weight (lbs) | Unstuffed at 325F | Stuffed at 325F | Servings |
|---|---|---|---|
| 8 - 12 lbs | 2h 45m - 3h | 3h - 3h 30m | 6 - 9 |
| 12 - 14 lbs | 3h - 3h 45m | 3h 30m - 4h | 9 - 11 |
| 14 - 18 lbs | 3h 45m - 4h 15m | 4h - 4h 30m | 11 - 14 |
| 18 - 20 lbs | 4h 15m - 4h 45m | 4h 30m - 5h | 14 - 15 |
| 20 - 24 lbs | 4h 45m - 5h 15m | 5h - 5h 30m | 15 - 18 |
Source: USDA FSIS turkey roasting guidelines. The USDA notes that these times are approximate and should be used in combination with a meat thermometer for food safety. According to the CDC, Salmonella causes approximately 1.35 million infections annually in the United States, with improperly cooked poultry being a leading source.
Practical Examples
Example 1 -- Small Thanksgiving: A 12-pound unstuffed turkey for 8 guests. Cooking time at 325 degrees F: 12 x 15 = 180 minutes = 3 hours. Plus 25 minutes resting. Start by 11:30 AM for a 3:00 PM dinner. This provides about 1.5 pounds per person, enough for generous servings plus leftovers.
Example 2 -- Large Family Gathering: A 22-pound stuffed turkey for 16 guests. Cooking time at 325 degrees F: 22 x 20 = 440 minutes = 7 hours 20 minutes. Start the oven by 7:00 AM for a 3:00 PM dinner. The USDA recommends cooking stuffing to 165 degrees F in the center -- check this separately from the thigh temperature. Consider using our cake serving calculator for dessert planning.
Example 3 -- High-Heat Method: A 15-pound unstuffed turkey at 350 degrees F: 15 x 13 = 195 minutes = 3 hours 15 minutes. Some cooks use a high-heat start: 450 degrees F for the first 30 minutes to brown the skin, then reduce to 325 degrees F for the remainder. This produces crispier skin but requires monitoring to prevent over-browning of breast meat.
Tips and Strategies
- Thaw completely: Allow 24 hours of refrigerator thawing per 4-5 pounds. A 20-pound turkey needs 4-5 days to thaw safely in the refrigerator.
- Use a meat thermometer: An instant-read thermometer is the only reliable way to confirm doneness. Insert into the thickest part of the thigh without touching bone.
- Let it rest: Allow 20-30 minutes of resting time before carving. This redistributes juices and raises the temperature another 5-10 degrees through carryover cooking.
- Tent with foil: If the breast browns too quickly, tent loosely with aluminum foil for the remainder of cooking to prevent drying out.
- Do not stuff too tightly: If stuffing the turkey, pack the stuffing loosely to ensure it reaches 165 degrees F. Overpacking slows heat penetration and creates a food safety risk.
- Plan backwards from dinner time: Add cooking time plus 30 minutes of resting plus 20 minutes for carving. For a 3:00 PM dinner with a 4-hour cook time, start the turkey at 10:10 AM.
Frequently Asked Questions
How long does a 15-pound turkey take?
An unstuffed 15-pound turkey at 325 degrees F takes approximately 3 hours 45 minutes to 4 hours. A stuffed 15-pound turkey at the same temperature takes about 5 hours. These times are estimates -- the USDA recommends using a meat thermometer to confirm the thigh has reached 165 degrees F. Start checking the temperature about 30 minutes before the estimated finish time to avoid overcooking.
Should I cook turkey at 325 or 350?
Both temperatures produce excellent results. Roasting at 325 degrees F is the traditional USDA-recommended method that provides slower, more even cooking with less risk of drying out the breast meat. Roasting at 350 degrees F cooks faster (approximately 13 minutes per pound unstuffed vs. 15 minutes) but requires more attention to prevent over-browning. A popular technique is to start at 450 degrees F for 30 minutes to crisp the skin, then reduce to 325 degrees F for the remainder of cooking.
How much turkey per person?
Plan 3/4 to 1 pound of whole turkey per person. This accounts for bone weight (about 40% of total weight) and moisture loss during cooking. For generous leftovers, plan 1.25 to 1.5 pounds per person. For boneless turkey breast, plan 1/2 pound per person since there is no bone waste. A 15-pound whole turkey comfortably serves 10-12 people with moderate leftovers.
How do I know when the turkey is done?
The only reliable method is measuring internal temperature with a meat thermometer. Insert the probe into the thickest part of the thigh without touching bone -- it should read at least 165 degrees F. Also check the wing joint and the center of the stuffing if applicable. Visual cues such as golden-brown skin, clear juices, or a wiggling leg are not reliable indicators of doneness. The CDC reports that undercooked poultry is a leading cause of Salmonella infection in the United States.
Should I brine my turkey?
Brining produces noticeably juicier meat by allowing the turkey to absorb a salt-water solution before cooking. A basic wet brine uses 1 cup of kosher salt per gallon of water, with the turkey submerged in the refrigerator for 12-24 hours. Dry brining, which involves rubbing salt directly on the skin and refrigerating uncovered for 24-48 hours, is simpler and produces crispier skin. Brining does not significantly change cooking time but can affect gravy flavor (drippings may be saltier). If your turkey is pre-brined or self-basting, do not add additional brine.
Is it safe to cook a stuffed turkey?
Yes, but it requires extra caution. The USDA states that the center of the stuffing must reach 165 degrees F to be safe, which takes longer than the turkey meat itself. This means stuffed turkeys cook 25-30% longer than unstuffed ones. Pack the stuffing loosely to allow heat to penetrate. Many food safety experts recommend cooking stuffing separately in a casserole dish for more reliable temperature control. If you do stuff the bird, check the stuffing temperature with a thermometer separately from the thigh.