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Christmas Turkey Size Calculator | Whole, Crown or Boneless

Quick reference

Whole turkey weight by guest count (standard appetite):

Guests	Whole bird	Crown
4 adults + 2 kids	6.5 lb / 3 kg	4.5 lb / 2 kg
8 adults + 3 kids	12 lb / 5.4 kg	8.4 lb / 3.8 kg
12 adults	15 lb / 6.8 kg	10.5 lb / 4.8 kg

groups Kids count half

set_meal Leftovers included

knife Crown vs whole

scale Oven reality

lightbulb A real example — Christmas for 8 adults, 3 children

Standard appetites, whole bird, leftovers wanted.

Result: 12 lb (5.4 kg) whole turkey — or an 8.4 lb crown if oven space is tight.

What this means: Roast the crown first if serving buffet-style, then the legs separately — total oven time drops by over an hour versus a single 12 lb bird.

Formula & methodology

Formula: Equivalents = adults + 0.5 × children; Weight(lb) = Equivalents × appetite (1.0–1.5) × cut factor (whole 1.0 / crown 0.7 / boneless 0.5)

How turkey sizing works

Whole turkeys carry bones, so plan 1.25 lb (about 570 g) per adult equivalent — enough for seconds and the obligatory leftovers. Children count as half an adult.

Appetite: light eaters 1.0 lb, standard 1.25 lb, big appetites 1.5 lb per equivalent.
Crown (boneless breast on the bone) wastes less, so ×0.7.
Boneless rolled joint needs only ×0.5 of the whole-bird weight.

Example: 8 adults + 3 children = 9.5 equivalents × 1.25 = about 12 lb (5.4 kg) whole, or an 8.4 lb crown.

Frequently asked questions

How many pounds of turkey do I need per person?

Plan 1.25 lb (570 g) of whole turkey per adult, or 0.875 lb for a crown and 0.625 lb for a boneless joint. Children count as roughly half an adult.

What size turkey for 10 adults?

About 12–13 lb (5.5–6 kg) whole, assuming standard appetites and that you want leftovers. A crown for the same table is around 9 lb.

How much turkey for 8 adults and 3 children?

That is 9.5 adult equivalents — about a 12 lb (5.4 kg) whole turkey, an 8.4 lb crown, or a 6 lb boneless roast.

Is a bigger turkey better value?

Usually, yes — per-pound price drops with size and leftovers are the bonus. But birds over ~20 lb take disproportionately long to cook; two 12 lb birds can be easier.

How long does a turkey take to defrost safely?

In the fridge, allow about 24 hours per 4–5 lb — a 12 lb bird needs roughly 3 full days. The faster cold-water method takes about 30 minutes per pound with the water changed every 30 minutes. Never defrost at room temperature; the surface enters the bacterial danger zone while the centre is still frozen.

How long should I roast per pound?

A rough guide is 13–15 minutes per pound at 325°F (165°C) for an unstuffed whole bird, but time is only an estimate — temperature is the rule. The thickest part of the breast and thigh should reach 165°F (74°C) on a thermometer. Rest the bird 20–30 minutes before carving so the juices redistribute.

Crown or whole bird — which is easier?

A crown (breast on the bone, no legs) cooks faster and more evenly, wastes less, and carves easily — ideal for white-meat lovers and small ovens. A whole bird feeds more people per pound of purchase and gives you legs and wings. Per edible pound, the price difference is smaller than it looks.

Can I cook the turkey the day before?

Yes. Cool the carved meat within 2 hours, refrigerate, and reheat until steaming throughout the next day. Alternatively roast on the day and hold the rested bird tented in foil for up to an hour while sides finish. Refrigerate leftovers within 2 hours and use within 3–4 days, or freeze.

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