The short version
Plan on 1 to 1.5 pounds of turkey per guest, thaw in the fridge for one day per 4 to 5 pounds, and roast at 325°F — 13 minutes per pound unstuffed, 15 stuffed. Done is 165°F in the thickest part of the thigh, then a 20-minute rest under foil. For your exact headcount and serving day, the turkey cooking time calculator builds the bird size, roast time, and week plan in one step.
Step 1: Buy the right size
Multiply your guests by 1 to 1.5 pounds. Ten guests means a 10 to 15-pound bird; pick the high end if your table eats big, if you want leftovers, or if the bird is small — under about 12 pounds, bone is a bigger share of the weight, so the meat per guest drops. Planning a feast with guaranteed leftovers? Go to 2 pounds per guest. For a crowd past about 20 guests, two medium birds beat one giant one every time: they thaw faster, roast more evenly, and you are not trying to wedge a 30-pounder into a normal oven.
Step 2: Start the thaw on time
A frozen turkey thaws in the refrigerator at about one day per 4 to 5 pounds — four days for a 15-pounder, five for a 20-pounder. Count backward from your serving day and mark the fridge date (the calculator above does this for you). Missed the window? The cold-water rescue: submerge the wrapped bird in cold water, change the water every 30 minutes, and budget 30 minutes per pound. Never thaw at room temperature — the outside sits in the bacterial danger zone while the inside stays frozen.
Step 3: Prep the bird
The day before, or the morning of, unwrap the bird and pull the neck and giblets from the cavities — they hide in two places, so check both. Pat the whole bird dry with paper towels; dry skin browns, wet skin steams. Season generously with salt and pepper, inside and out, or dry-brine it overnight in the fridge: salt it, leave it uncovered, and the skin dries further for better browning. Rub the skin with softened butter or oil just before it goes in. If you are stuffing the bird, fill the cavity loosely right before roasting — never the night before — and remember the stuffing itself must reach 165°F, which is why stuffed birds roast longer.
Step 4: Roast low and steady
Heat the oven to 325°F, set the bird breast-side up on a rack in a shallow roasting pan, and roast for 13 minutes per pound unstuffed, 15 stuffed. The rack keeps the bottom out of the drippings so the skin crisps instead of steaming. Tent the breast loosely with foil if it browns faster than the rest — it finishes before the thighs. Open the oven as little as possible; every peek drops the temperature and adds minutes. A 15-pound unstuffed bird runs about 3 hours 15 minutes. The thermometer decides; the clock only plans.
Step 5: Test with a thermometer
Start checking about 30 minutes before the math says the bird is done. Push an instant-read thermometer into the thickest part of the thigh without touching bone — bone conducts heat and reads hot, which lies to you. You want 165°F; check the wing joint and the thickest part of the breast too, since dark and white meat finish at different rates. If you stuffed the bird, test the center of the stuffing as well. Pull the turkey at 165°F, not past it — carryover heat nudges the temperature a few degrees higher while it rests, and an overcooked breast is the dry turkey everyone fears.
Step 6: Rest, then carve
Move the bird to a cutting board and tent it loosely with foil for about 20 minutes. Resting lets the juices redistribute through the meat instead of flooding the board the moment you slice — carve too early and the breast dries out in front of your guests. Use the window to finish the gravy and warm the plates. Carve the legs and thighs off first, then slice the breast against the grain in even pieces. Save the carcass: it makes the best soup stock of the year.
Worked example: Thanksgiving for 10
Ten guests, generous appetites, unstuffed bird. Size: 10 × 1.5 = 15 lb. Roast: 15 × 13 minutes = 195 minutes = 3 h 15 min at 325°F. Thaw: ⌈15 ÷ 4.5⌉ = 4 days, so the bird goes from freezer to fridge on Sunday morning for a Thursday dinner. Monday through Wednesday it thaws; Wednesday evening you unwrap, pull the giblets, pat dry, and salt it; Thursday it roasts 3 h 15 min, rests 20 minutes under foil, and hits the table. The thermometer reads 165°F in the thigh at the end — that is the whole plan, and nothing about it is improvised.
Run the same math for your own headcount in the turkey cooking time calculator — it draws the week plan for any serving day, not just Thanksgiving.
Frequently asked questions
How long do you cook a turkey per pound?
13 minutes per pound unstuffed, 15 stuffed, at 325°F. Plan by the minutes; decide by the thermometer — start checking about 30 minutes before the planned time.
What size turkey do I need per person?
1 to 1.5 pounds per guest, or 2 for generous leftovers. Under 12 pounds, lean high — small birds carry more bone per pound.
How long does it take to thaw a turkey?
About one fridge day per 4 to 5 pounds: 4 days for a 15-pounder, 5 for a 20-pounder. The cold-water method runs 30 minutes per pound if you are behind schedule. Never thaw at room temperature.
Should I brine the turkey?
A dry brine — salting the bird and resting it uncovered in the fridge overnight — seasons the meat deeply and dries the skin for better browning. It is the highest-return prep step there is. A wet brine works too but needs a huge container and fridge space. Skip brining if the bird is labeled pre-basted or “enhanced,” which is already salted.
Is it safe to stuff the turkey?
Yes, with two rules: stuff it loosely just before roasting, and verify the stuffing’s center reaches 165°F — it cooks slowest. Cooking stuffing separately is faster, safer, and crisps the top; stuffing inside is traditional and flavors the bird from within.
Why did my turkey come out dry?
Almost always one of three things: overcooked past 165°F in the thigh, carved without resting, or a hot-running oven. A thermometer, a 20-minute rest, and checking the breast early fix all three.
Related reading
- Turkey cooking time calculator — your headcount and serving day turned into a bird size, roast time, and thaw plan.
- How to scale a recipe up or down — size the stuffing, sides, and gravy for the same guest count.
- How to convert recipe measurements — cups, grams, and oven temperatures without the guesswork.
- How to build a grocery budget — keep the holiday feast inside a monthly target.