Turkey Size Calculator — What Size Turkey Do I Need?

Background.

The problem with "how much turkey per person" is that a turkey is mostly not turkey. Between the bird on the shop scale and the meat on the plate go the giblets, the neck, the carcass, a good deal of fat and a fifth of the weight as water driven off in the oven. USDA has measured what is left, in the yield table its Food Buying Guide publishes for school kitchens, and the answer is that a whole bird bought with its neck and giblets gives 0.48 pounds of cooked meat per pound purchased. Without the giblets it is 0.53. Skip the skin and those drop to 0.42 and 0.47. A bone-in breast, which has no legs or carcass to lose, gives 0.64.

This calculator works from those published yields rather than from a rule of thumb. You tell it how many people are eating and how much cooked meat you want each of them to have; it tells you what to buy. That order matters, because the portion is the thing you actually control and the bird weight is a consequence of it.

It also explains the rule of thumb rather than repeating it. Set the portion to 8 ounces of cooked meat — a generous holiday plate — and a whole bird with giblets comes out at 1.04 pounds per person. That is the familiar "buy a pound a head" advice, and it turns out to be a statement about a 7.7-ounce serving of cooked turkey rather than about turkeys as such. Change the portion and the rule changes with it: at 6 ounces the same bird is 0.78 pounds per person, and at 4 ounces it is 0.52.

There is a second, sharper check on all this. University of Nebraska–Lincoln Extension publishes two separate rules — a pound per person for a whole bird, three-quarters of a pound for a bone-in breast — and offers no reconciliation between them. Run each through USDA's independently published yields and both deliver exactly 7.68 ounces of cooked meat per person. Two rules of thumb from one authority, converted by a different authority's measurements, land on the same portion to the ounce. That is a strong sign both are describing something real.

The number this page returns is an as-purchased weight, and it is worth being explicit about what that means: it is what the label says at the shop, before anything is removed. The yield already contains the bones. Buying extra to allow for the carcass is counting the same loss twice, and it is the most common way a careful cook ends up with a bird two sizes too large.

Two things are deliberately not offered. Boneless turkey breast is missing because USDA's yield table, as retrieved, has no whole-bird row for it, and estimating one would mean inventing the very constant the page exists to source. Frozen pre-stuffed turkeys are missing for a different reason: they must be cooked from frozen and never thawed, so the planning question around them is not really about size at all.

Finally, size is a thawing problem far more than a cooking one. A whole turkey needs roughly 24 hours per 4 to 5 pounds in the refrigerator, so a 20-pound bird is four to five days of fridge space, and a turkey still frozen in the middle on the day is the single most common holiday failure. Above about 24 pounds — an editorial judgement about ovens and shops rather than a USDA figure — two smaller birds thaw in half the time and roast more evenly than one large one. Whatever you buy, it is safe at an internal temperature of 165°F measured with a food thermometer, in the innermost thigh and wing and the thickest part of the breast.

What is turkey size calculator?

A turkey size calculator converts a number of guests into the weight of raw bird to buy. It exists because turkeys have an unusually low and unusually variable edible fraction — between 42% and 64% depending on the cut, the giblets and whether the skin gets eaten — so a per-person rule borrowed from any other meat will be wrong.

This page runs on USDA Food and Nutrition Service's Food Buying Guide for Child Nutrition Programs, Section 1 (Meats/Meat Alternates) yield table, Poultry category. For each turkey row that table states, in words, how many pounds of cooked meat one pound as purchased yields — for example "1 lb AP = 0.48 lb cooked turkey with skin without meat from neck and giblets" for a whole bird sold with its neck and giblets. Dividing the cooked meat you want by that yield gives the purchase weight, and that is the whole calculation. The safety guidance attached to the result comes from USDA FSIS and from Clemson Extension's turkey factsheet.

How to use this calculator.

1. 01Enter the number of people eating. Count children as adults if they eat like adults, and as half if they do not.
2. 02Set the cooked meat per person. 8 oz is a generous holiday plate, 6 oz a normal dinner, 4 oz a restaurant portion. This is meat on the plate, not raw weight.
3. 03Choose what you are buying. The yield differs by more than 30% between a whole bird with giblets and a bone-in breast.
4. 04Say whether the skin gets eaten — USDA publishes a separate yield for each, and the gap is about 13%.
5. 05Add a leftovers percentage if you want them. It is a straight multiplier and it is your call, not a published figure.
6. 06Buy the as-purchased weight shown. Do not add extra for the bones; the yield already removed them.
7. 07Check the thawing time before you commit to a large bird — about 24 hours per 4 to 5 pounds in the refrigerator.

The formula.

Work backwards from the plate. Ten people at 8 ounces of cooked meat each need 80 ounces, which is 5 pounds of meat actually eaten. USDA's Food Buying Guide states that a whole turkey sold with its neck and giblets yields 0.48 pounds of cooked meat per pound as purchased, so the bird has to weigh 5 ÷ 0.48 = 10.42 pounds. Per person that is 1.04 pounds — the rule of thumb, derived rather than assumed.

The yield is the only interesting number in that calculation, and it varies more than people expect. Remove the neck and giblets from the equation and the same bird yields 0.53 instead of 0.48, because those parts are counted as purchase weight but not as meat. Decline the skin and the whole-bird figure falls to 0.42 with giblets or 0.47 without — a 13% swing, which on a 20-pound bird is well over a pound of food. Buy a bone-in breast instead and the yield jumps to 0.64, because a breast has no legs, no carcass and no wings to lose. Leg quarters come in at 0.53, the same as a whole bird without giblets.

USDA publishes each of these twice, which is a useful accident. Alongside the "1 lb AP = X lb cooked" statement there is a servings-per-purchase-unit column giving how many one-ounce servings a pound yields, and the two are the same number: yield × 16. For the whole bird with giblets, 0.48 × 16 = 7.68, and 7.68 is exactly what the table prints. That identity holds on every turkey row this page uses except the bone-in breast, where the table prints 10.2 against a computed 10.24, because the servings column is rounded to three significant figures. This page computes from the yield, which is the more precise of the two published figures, and a test asserts that it returns 10.24 and not 10.2 so the choice cannot be quietly reversed.

The leftovers percentage is a clean multiplier applied to the meat requirement before the division, so asking for 25% more leftovers buys 25% more bird, and the figure reported as the margin is exactly the difference between the two purchase weights.

The cross-check that gives this page its confidence comes from outside USDA entirely. University of Nebraska–Lincoln Extension publishes a purchasing table with two independent rules: a pound of whole turkey per person, or three-quarters of a pound of bone-in breast per person. UNL does not connect them. But 1.00 × 0.48 = 0.48 pounds of cooked meat, and 0.75 × 0.64 = 0.48 pounds of cooked meat — 7.68 ounces either way. Two rules of thumb, converted by yields from a completely different source, agree to the ounce. That can only happen if 0.48 and 0.64 stand in the ratio 3 to 4, which they do.

Rounding: nothing is rounded until display. In particular the purchase weight is not rounded before the per-person figure, the kilogram conversion or the leftovers margin are taken from it, and the two-bird advisory above 24 pounds is tested against the unrounded weight — so a bird computing to 23.96 pounds displays as 24.0 and correctly does not trigger it.

A worked example.

Frequently asked questions.

References& sources.

1. [1]U.S. Department of Agriculture, Food and Nutrition Service. "Food Buying Guide for Child Nutrition Programs," Section 1 (Meats/Meat Alternates) yield table, Meal Category "Poultry" — the source of every yield on this page. Rows used: "Turkey, Whole, fresh or frozen With Neck and Giblets" (1 lb AP = 0.48 lb cooked turkey with skin without meat from neck and giblets; 0.42 lb without skin), "Turkey, Whole, fresh or frozen Without Neck and Giblets" (0.53 lb with skin; 0.47 without), "Turkey Breasts Whole or Halves, With bone" (0.64; 0.57) and "Turkey Leg Quarters With bone" (0.53; 0.48), together with the matching Servings per Purchase Unit column. Retrieved 2026-07-30 as the published spreadsheet and parsed locally; the Food Buying Guide states this table was last updated 2026-01-30.
2. [2]U.S. Department of Agriculture, Food and Nutrition Service. Food Buying Guide — Meats/Meat Alternates resource page, which publishes the yield-table downloads and defines the table's columns: food as purchased (AP), purchase unit, servings per purchase unit for the edible portion (EP), serving size per meal contribution, and additional information. Retrieved 2026-07-30.
3. [3]U.S. Department of Agriculture, Food Safety and Inspection Service. "Poultry: Basting, Brining, and Marinating," Food Safety Information fact sheet, revised May 2007 — the cooking and leftovers guidance attached to every result here: "Set oven temperature no lower than 325 °F. Whole poultry and parts are safe cooked to a safe minimum internal temperature of 165 °F as measured with a food thermometer. Check the internal temperature in the innermost part of the thigh and wing and the thickest part of the breast," and "Refrigerate leftovers in shallow containers within 2 hours of cooking. Use leftover poultry and stuffing within 3 to 4 days." Retrieved 2026-07-30 from the U.S. Government Publishing Office permanent archive (GOVPUB-A101-PURL-gpo6145), because fsis.usda.gov refused the request.
4. [4]University of Nebraska–Lincoln Extension (UNL Food), "Turkey 101: How to Plan, Cook, Serve, Store, and Reheat" — the independent check on this page's yields: "The general recommendation is to allow 1 pound of fresh or frozen turkey per person," with a purchasing table giving whole bird 1 lb per person, boneless breast ½ lb, bone-in breast ¾ lb and pre-stuffed frozen 1¼ lb. Run through USDA's separate yields, UNL's whole-bird and bone-in-breast rules both deliver 7.68 oz of cooked meat per person — the same portion to the ounce. Retrieved 2026-07-30.
5. [5]Clemson University Home & Garden Information Center, factsheet "How to Cook Turkey" — the thawing and leftovers figures quoted here: refrigerator thawing takes "about 24 hours for every 4 to 5 pounds," so "a 20-pound turkey will take between four and five days"; cold-water thawing takes "about 30 minutes per pound"; "Turkey is safely cooked when the internal temperature is at least 165 °F when checked with a food thermometer"; "Never thaw a pre-stuffed frozen bird before cooking. Always cook from the frozen state"; and "It is best to use refrigerated leftovers within three or four days, or freeze." Retrieved 2026-07-30.