Skip to content
Omnikalc

Turkey calculator: what size to buy, thawing time and roasting time

Find the right turkey for your guests, how many days it needs in the refrigerator to thaw and how long to roast it at 325 °F, stuffed or not.

Updated on
Your inputs

Value out of range

lb

Value out of range

lb

Value out of range

Stuffed?

Results

Turkey size to buy

15.0 lb

Roasting time at 325 °F

3:30:00

Use a thermometer Time is a guide; 165 °F in the thigh is the real test.

Thawing in the refrigerator

3.5 days

Resting time before carving
30:00
Thawing in cold water
7:00:00
Guests this turkey serves
9

Times for other turkey sizes

Roasting time at 325 °FThawing in the refrigeratorGuests this turkey serves
8 lb current2:35:002.05
12 lb current3:15:003.08
14 lb current3:30:003.59
16 lb current3:50:004.010
20 lb current4:30:005.013
24 lb current5:10:006.016

Planning the holiday bird

A turkey dinner has three numbers to get right: the size of the bird, how long it takes to thaw and how long it roasts. Get any of them wrong and dinner is late or the turkey is dry. This calculator works out all three from the number of guests and the weight on the label.

How big a turkey to buy

A whole turkey is about half bone and trimmings, so you need more raw weight than meat per person:

  • 1 lb per guest feeds everyone at the meal.
  • 1 1/2 lb per guest leaves leftovers for sandwiches.
  • For a crowd of children or light eaters, 3/4 lb is enough.

For 10 guests with leftovers: 10 × 1.5 = 15 lb.

Thawing a frozen turkey

  • In the refrigerator (40 °F or below): about 24 hours for every 4 to 5 lb. A 14-lb turkey needs 3 1/2 days, so start on Sunday for a Thursday dinner. A thawed turkey keeps another one to two days in the fridge.
  • In cold water: about 30 minutes per pound, in its leak-proof wrapping, changing the water every 30 minutes. A 14-lb turkey needs 7 hours and must be cooked right away.
  • Never on the counter. The outside warms into the danger zone long before the center thaws.

Roasting time at 325 °F

The calculator approximates the usual timetables for a whole turkey roasted at 325 °F: about 75 minutes plus 9.8 minutes per pound unstuffed, and 90 minutes plus 10.5 minutes per pound stuffed.

Weight Unstuffed Stuffed
8 lb 2 h 35 2 h 55
12 lb 3 h 15 3 h 35
14 lb 3 h 30 3 h 55
16 lb 3 h 50 4 h 20
20 lb 4 h 30 5 h 00
24 lb 5 h 10 5 h 40

Worked example: a 14-lb turkey for 10 guests

  1. Size check: 14 ÷ 1.5 = 9 guests with leftovers, or 14 with the 1-lb rule.
  2. Thawing: 14 ÷ 4 = 3.5 days in the refrigerator.
  3. Roasting unstuffed: 75 + 9.8 × 14 = 212 minutes, about 3 h 30.
  4. Resting: 30 minutes under loose foil before carving.

The thermometer is the real timer

Ovens, pans and birds differ, so treat the time as a plan, not a promise. The turkey is safe when a food thermometer reads 165 °F in the thickest part of the thigh, the innermost part of the wing and the thickest part of the breast. If the turkey is stuffed, the center of the stuffing must also reach 165 °F, which is why many cooks bake the stuffing separately. Start checking 30 minutes before the estimated time. If the breast browns too early, cover it loosely with foil.

Frequently asked questions

How big a turkey do I need per person?

Plan on 1 lb of whole turkey per guest for the meal, or 1 1/2 lb if you want leftovers. For 12 guests with leftovers, buy an 18-lb turkey.

How long does a turkey take to thaw?

In the refrigerator, about 24 hours for every 4 to 5 lb, so a 16-lb turkey needs about four days. In cold water, allow 30 minutes per pound and change the water every 30 minutes.

How long do I cook a turkey per pound?

At 325 °F, an unstuffed turkey usually needs 13 to 15 minutes per pound for mid-size birds, a little less per pound for large ones. Use a thermometer: the bird is done at 165 °F in the thigh, wing joint and breast.

Can I cook a turkey from frozen?

Yes, it is safe, but it takes about 50 percent longer than a thawed turkey and you cannot stuff it. Remove the giblet bag with tongs once it loosens during cooking.

Was this calculator helpful?

Thanks for your feedback!

Results are estimates provided for information purposes. They do not replace professional advice.