How Long to Cook a Turkey

Turkey roasting time scales with weight, but the only number that guarantees a safe, done bird is internal temperature: 165°F in the thickest part of the thigh (not touching bone). Times are a planning guide; the thermometer is the verdict.

Roasting chart at 325°F

Weight Unstuffed Stuffed
8–12 lb 2¾–3 hrs 3–3½ hrs
12–14 lb 3–3¾ hrs 3½–4 hrs
14–18 lb 3¾–4¼ hrs 4–4¼ hrs
18–20 lb 4¼–4½ hrs 4¼–4¾ hrs
20–24 lb 4½–5 hrs 4¾–5¼ hrs

That’s roughly 13 minutes per pound unstuffed and 15–17 minutes per pound stuffed. If you stuff the bird, the center of the stuffing must also reach 165°F — which is why many cooks bake stuffing separately.

Frequently asked questions

What temperature is turkey done? 165°F in the thigh, and 165°F in the stuffing if stuffed.

How long per pound? About 13 minutes unstuffed, 15–17 stuffed, at 325°F.

Rely on the pop-up timer? No — use an instant-read thermometer.

Skip the math: use the calculator to get your numbers instantly.

Thaw a frozen turkey safely in the fridge, allowing about 24 hours per 4–5 pounds — a big bird can take several days, so plan ahead. Never thaw it on the counter, where the surface enters the bacterial danger zone long before the center is ready.

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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.