About the Turkey Size Calculator
This turkey size calculator tells you how big a turkey to buy for Thanksgiving, Christmas or any holiday meal. Enter the number of adults and children, choose how hungry your crowd is and whether you want leftovers, and pick a whole bird or a turkey breast. You get the weight to buy in pounds and kilograms and how long it will take to thaw.
The starting point is the USDA guideline of 1 pound of whole turkey per person (1¼ pounds for frozen pre-stuffed birds). That sounds like a lot, but a good share of a whole bird’s raw weight is bone, skin and juices lost during roasting, so the carved meat weighs much less than the bird you buy. Allow 1½ pounds per person if you want generous leftovers for sandwiches and soup, and count young children as half a portion.
Turkey breasts have far less bone, so you need less weight: about ¾ pound per person bone-in and ½ pound boneless. Start shopping early — USDA advises allowing about 24 hours of refrigerator thawing for every 4 to 5 pounds, so a 16 lb frozen bird needs four days in the fridge.
With the default inputs, the turkey to buy is 16.5 lb. Change any value above to recalculate instantly.
How to use the turkey size calculator
- 1Enter the number of adults and young children eating.
- 2Choose a standard allowance, or more if you want leftovers.
- 3Select a whole turkey or a breast.
- 4Buy a bird at or slightly above the weight shown.
- 5Start thawing a frozen turkey in the fridge the number of days shown.
Formula and method
USDA’s consumer guide to roasting a turkey recommends allowing 1 pound of turkey per person for a fresh or frozen whole bird and 1¼ pounds per person for a frozen pre-stuffed one. The calculator multiplies the number of adult portions (children count as half) by your chosen allowance — 1, 1¼, 1½ or 2 pounds — and by a cut factor of ¾ for bone-in breast or ½ for boneless breast, which reflects how much less bone those cuts carry.
Thawing times follow USDA guidance: about 24 hours in the refrigerator for every 4 to 5 pounds (the calculator uses 4 lb for a safe margin) or about 30 minutes per pound submerged in cold water that is changed every 30 minutes.
- lb per person
- Allowance per adult for a whole bird (USDA: 1 lb)
- cut factor
- 1 whole, 1.25 pre-stuffed, 0.75 bone-in breast, 0.5 boneless
Worked examples
10 adults and 2 kids, with leftovers
Ten adults plus two children (half portions each) make 11 portions. At 1½ lb each for leftovers that is 16.5 lb — buy a 16–18 lb turkey. Thawing in the fridge takes about 16.5 ÷ 4 ≈ 4 days, or about 8¼ hours in cold water.
Six adults, standard portions
USDA’s 1 lb per person means 6 lb for six adults. Because few whole turkeys are that small, a 10–12 lb bird will simply leave leftovers — or choose a bone-in breast.
Boneless breast for 8 adults and 4 kids
Eight adults and four children are 10 portions. Boneless breast needs about ½ lb per person, so buy 5 lb (2.3 kg).
Frequently asked questions
How many pounds of turkey per person?+
USDA recommends 1 pound of whole turkey per person. Allow 1½ pounds if you want leftovers, about ¾ pound for bone-in breast and ½ pound for boneless breast. Frozen pre-stuffed turkeys need 1¼ pounds per person.
What size turkey do I need for 10 people?+
About 10 lb for a standard meal or 15 lb with leftovers. If your guests include children, count each child as half a portion and size down accordingly.
How long does a turkey take to thaw?+
In the refrigerator, allow about 24 hours for every 4 to 5 pounds — 3 to 4 days for a 12–16 lb bird. In cold water, allow about 30 minutes per pound and change the water every 30 minutes.
Is it better to buy one large turkey or two small ones?+
For more than about 20 guests, two 12–14 lb birds often work better: they cook faster and more evenly, fit standard ovens and roasting pans, and give you twice the drumsticks.
Why is the allowance 1 lb per person when a serving is only a few ounces?+
The raw weight of a whole turkey includes the carcass, neck, skin and fat, and the meat loses moisture as it roasts. The carved meat is therefore far lighter than the bird, which is why the per-person allowance is much larger than a typical 3–6 oz plated portion.
This tool gives general estimates and is not medical advice. Talk to a doctor or qualified professional about your health, diet or training.