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Turkey Cooking Time Calculator

The breast and the thigh finish at different times.

Work out Turkey Cooking Time. The breast and the thigh finish at different times. States the assumption instead of hiding it.

Written and maintained by Mohit PatelLast checked August 4, 2026How we build these
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Time in the oven

2h 30m

Ready 3h 00m from now, including 30 minutes resting

Oven time2h 30m
Resting time30 min
Total from start to carving3h 00m
Target internal temperature74 °C
Pull it out at69 °C
Twice the weight would take3h 50m
Doubling the time would say5h 00m

Whole birds are the worst case for time-per-weight rules, because the breast and the thigh reach temperature at different rates. Probe the thickest part of the thigh without touching bone, and expect the breast to be ahead of it. A large bird needs a longer rest than most recipes suggest — thirty minutes minimum, and up to forty-five for anything over six kilograms.

How the Turkey Cooking Time Calculator works

Roasting time for a whole bird, with resting time and the internal temperature to pull it at. Whole birds are the worst case for time-per-weight rules, because the breast and the thigh cook at different rates.

Also known as: how long to cook a turkey · christmas turkey timing calculator · thanksgiving turkey cooking time · turkey roasting time by weight

Why a whole bird is the hardest case

A turkey is two different cuts attached to each other. The breast is lean and dries out above about 70 °C; the thigh is full of connective tissue and needs to reach higher to become tender. They also sit at different depths from the surface.

So there is no single doneness temperature for the bird, and any time-per-weight figure is averaging over two conflicting requirements. Probing the thickest part of the thigh, without touching bone, is the measurement that matters — bone conducts and reads falsely high.

Covering the breast with foil for part of the cook, or starting the bird breast-down, both slow the breast relative to the thigh. Spatchcocking — removing the backbone and flattening — is the most effective answer, because it evens the thickness and cuts the total time substantially.

Thawing is the step that catches people out

In a refrigerator a turkey thaws at roughly a day per two kilograms, so a large bird needs several days. That is a planning problem rather than a cooking one, and it is the single most common Christmas failure.

Cold water thawing is faster — around 30 minutes per kilogram with the water changed every half hour — and needs the bird sealed. Room-temperature thawing is not safe for a large bird, because the surface spends hours in the bacterial growth range while the centre is still frozen.

A partly frozen bird cannot be timed. The outside will be well past done before the centre is safe, which is why the thaw has to be complete rather than nearly complete before the oven timing means anything.

Brining, stuffing and the pop-up timer

Brining helps lean breast meat retain moisture and is the most effective single improvement to a roast turkey. A dry brine — salting and refrigerating uncovered for a day or two — achieves much of the same effect without needing a vessel large enough to submerge the bird.

Stuffing the cavity slows the centre considerably and creates a second thing that must reach a safe temperature. By the time the stuffing is safe, the breast is usually overcooked. Cooking stuffing separately is both safer and better, and it browns properly.

Pop-up timers are calibrated conservatively and typically trigger well past the point the breast is done. They exist to prevent undercooking rather than to indicate doneness, which is a different objective — and it is a common reason a bird ends up dry.

Where to go next

The Turkey Cooking Time question rarely arrives on its own. These are the ones that usually come with it:

Frequently asked questions

How long does a turkey take per kilogram?

The common guidance is a rate per kilogram plus a fixed allowance, which is how this calculates. The rate depends on the oven temperature and whether the bird is stuffed, so both are inputs rather than assumptions.

Where do I put the thermometer?

In the thickest part of the thigh without touching bone, which is the last part to come up to temperature. Bone conducts heat and gives a falsely high reading.

Should I stuff the bird?

Stuffing slows the centre considerably and has to reach a safe temperature itself, which usually means overcooking the breast. Cooking stuffing separately is both safer and better.

How long should a turkey rest?

At least thirty minutes, and up to forty-five for a large bird. It carries on cooking, the juices settle, and it stays hot far longer than people expect — a rested bird is easier to carve.

Why does the breast dry out?

Because it reaches temperature before the thigh does. Covering the breast with foil for part of the cook, or starting the bird upside down, both help even it out.

Do I need to wash the turkey?

No — food safety agencies advise against it, because rinsing raw poultry sprays bacteria around the kitchen. Cooking to temperature is what makes it safe.

How long does a turkey take to thaw?

In a refrigerator, roughly a day per two kilograms, which means a large bird needs several days. Planning the thaw is more often the failure than planning the cook.

Should I brine a turkey?

Brining improves moisture retention in lean breast meat considerably. A dry brine — salting and refrigerating uncovered — achieves much of the same effect without needing a container the size of the bird.

Is a pop-up timer reliable?

Not particularly. They are calibrated conservatively and typically trigger well past the point the breast is done, which is a common reason a turkey ends up dry.

Can I cook the turkey the day before?

Roasting ahead, cooling quickly and reheating in stock works well and removes all the timing pressure. It is the approach most restaurant kitchens use for volume service.

How long can leftovers be kept?

Refrigerate within two hours of cooking and use within a few days, or freeze. Cooling a large bird quickly matters — leaving it out to cool slowly is the risky part, not the reheating.

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