Turkey Size & Cooking Time Calculator

Find the right turkey for your guests — and how long to thaw it and roast it.

100% private — runs entirely in your browser. Your data is processed on your device and never sent to the internet.

Everything is worked out in your browser and saved on this device for next time.

About the turkey calculator

Type how many people are coming. The calculator tells you how big a turkey to buy, how many days to thaw it in the fridge, how long to thaw it in cold water, and how long to roast it at 325 °F (163 °C).

The roasting times come from the USDA chart for a whole turkey. A table shows the times for every size, stuffed and not stuffed. US Thanksgiving 2026 is on Thursday, 26 November — so start planning early.

Features

  • Turkey size — how big a turkey to buy for your guests
  • Three appetites — Just the meal, A normal amount or Plenty of leftovers
  • Thawing times — days in the fridge, and hours in cold water
  • Roasting time — at 325 °F (163 °C), from the USDA chart
  • Stuffed or not — tick The turkey is stuffed; the table shows both times for every size
  • Done and rest — the safe inside temperature and the time to rest before carving
  • Pounds or kg — change the Unit under More options
  • Private — it works in your browser, nothing is uploaded, and your settings are saved on this device

How to use it

  • Type the Number of guests, or tap one of the Guests buttons: 4, 6, 8, 10, 12, 16 or 20
  • Choose How much: Just the meal, A normal amount or Plenty of leftovers
  • Open More options to change the Unit (pounds or kg), or tick The turkey is stuffed
  • Read the turkey size, the thawing time and the roasting time in the result
  • Use Copy to copy the result, or Start again to clear everything

Example

The tool opens with 8 guests and A normal amount.

  • Turkey to buy: 8 × 1.25 lb = 10 lb (4.5 kg), whole, with bones
  • Roasting time at 325 °F, not stuffed: 2 h 45 min – 3 h
  • Thawing in the fridge: 3 days
  • Thawing in cold water: 5 h (change the water every 30 minutes)
  • It is done when the thickest part of the thigh reaches 165 °F (74 °C)
  • Let it rest 20–30 minutes before carving

For Thanksgiving on Thursday, 26 November, put this turkey in the fridge to thaw by Monday, 23 November.

What size turkey to buy

The calculator uses 1 lb per guest (just the meal), 1.25 lb (a normal amount) or 1.5 lb (plenty of leftovers). It never goes below 8 lb, the smallest whole turkey in the chart.

GuestsJust the mealA normal amountPlenty of leftovers
48 lb8 lb8 lb
68 lb8 lb9 lb
88 lb10 lb12 lb
1010 lb13 lb15 lb
1212 lb15 lb18 lb
1616 lb20 lb24 lb
2020 lb25 lb30 lb

Roasting times at 325 °F (163 °C)

Turkey weightNot stuffedStuffed
8–12 lb (3.6–5.4 kg)2 h 45 min – 3 h3 h – 3 h 30 min
12–14 lb (5.4–6.4 kg)3 h – 3 h 45 min3 h 30 min – 4 h
14–18 lb (6.4–8.2 kg)3 h 45 min – 4 h 15 min4 h – 4 h 15 min
18–20 lb (8.2–9.1 kg)4 h 15 min – 4 h 30 min4 h 15 min – 4 h 45 min
20–24 lb (9.1–10.9 kg)4 h 30 min – 5 h4 h 45 min – 5 h 15 min

Thawing time for Thanksgiving 2026

In the fridge, allow 1 day for every 4 lb. In cold water, allow 30 minutes per lb.

TurkeyDays in the fridgePut it in the fridge byCold water
10 lb3Monday, 23 November5 h
12 lb3Monday, 23 November6 h
15 lb4Sunday, 22 November7 h 30 min
20 lb5Saturday, 21 November10 h
24 lb6Friday, 20 November12 h

Frequently asked questions

How much turkey do I need per person?

About 1 lb per person of whole turkey with bones. Take 1.5 lb per person if you want leftovers. Children eat less.

How long do I cook a turkey?

At 325 °F (163 °C), a 12 lb turkey takes about 2 h 45 min – 3 h, and a 20 lb turkey about 4 h 15 min – 4 h 30 min (not stuffed). Use the table above, and check with a meat thermometer.

How long does it take to thaw a turkey?

In the fridge, about 1 day for every 4 lb — so 5 days for a 20 lb turkey. In cold water, about 30 minutes per lb. Change the water every 30 minutes.

How do I know the turkey is done?

Put a meat thermometer in the thickest part of the thigh. The turkey is done at 165 °F (74 °C). If it is stuffed, the middle of the stuffing must reach 165 °F too.

What if I have more than 20 guests?

For more than 24 lb (11 kg), think about two smaller turkeys. They cook more evenly and fit in the oven better.

Is the time exact?

No. Ovens and turkeys vary. The times are a guide. Always check the temperature with a meat thermometer.

Good to know

  • Your choices are saved only in this browser
  • Nothing you type is sent anywhere
  • A stuffed turkey takes longer to roast
  • Times are for a whole turkey in a normal oven at 325 °F (163 °C)

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