Turkey Thaw and Roast Time Calculator
Plan a turkey with USDA FSIS charts: fridge or cold-water thaw time, 325°F roast time, the 165°F safe temperature, and when to put the bird in the oven.
Start from
Thaw method
Oven: 325°F (163°C). USDA publishes turkey roast times only for this setting, so this calculator does not give times for other oven temperatures.
- Thaw time
- 3 to 4 days
- USDA chart row: 12–16 lb
- Start thawing in the fridge by Sun, Nov 22, 3:00 PM.
- Using the optional 1–2 day fridge hold after thawing, you can start as early as Fri, Nov 20, 3:00 PM.
- Roast time at 325°F (163°C)
- 3¾ to 4¼ hours
- USDA chart row: 14–18 lb
- Put it in the oven
- Between Thu, Nov 26, 10:25 AM and Thu, Nov 26, 10:55 AM
- Use the earlier time to finish on schedule, then let the turkey rest 20 minutes before carving.
- Safe internal temperature
- 165°F (74°C) in the innermost thigh, innermost wing, thickest part of the breast, and the center of any stuffing. Check with a food thermometer; the clock does not decide doneness.
- Refrigerator thaw (40°F or below): keep the turkey in a container so juices can't drip. After thawing it can stay in the fridge 1 or 2 more days, and it can be refrozen with some loss of quality.
- Microwave thawing is also safe: follow your microwave's instructions (USDA gives no minutes per pound), cook immediately, and don't refrigerate or refreeze it.
- Never thaw a turkey on the counter or in hot water. Bacteria multiply fastest between 40°F and 140°F.
How It Works
- 1
Enter the turkey's weight or your guest count
Type the weight in pounds or kilograms, or switch to guest mode to size the bird at the USDA allowance of 1 lb per person (1¼ lb for a frozen pre-stuffed turkey).
- 2
Choose thaw method, stuffing, and serve time
Pick refrigerator, cold water, already thawed, or cook from frozen, say whether the bird is stuffed, and set when you want to eat.
- 3
Follow the schedule and check the temperature
Read the thaw start, the 325°F roast range, and the oven-in window, then confirm 165°F (74°C) with a food thermometer and rest 20 minutes before carving.
USDA turkey thawing and roasting chart
These are the official USDA FSIS figures the calculator uses. Roast times are for a 325°F (163°C) oven only; USDA publishes no times for other oven temperatures.
| Weight | Refrigerator | Cold water |
|---|---|---|
| 4–12 lb | 1–3 days | 2–6 hours |
| 12–16 lb | 3–4 days | 6–8 hours |
| 16–20 lb | 4–5 days | 8–10 hours |
| 20–24 lb | 5–6 days | 10–12 hours |
| Weight | Unstuffed | Stuffed |
|---|---|---|
| 4–6 lb breast | 1½–2¼ hours | Not usually applicable |
| 6–8 lb breast | 2¼–3¼ hours | 2½–3½ hours |
| 8–12 lb | 2¾–3 hours | 3–3½ hours |
| 12–14 lb | 3–3¾ hours | 3½–4 hours |
| 14–18 lb | 3¾–4¼ hours | 4–4¼ hours |
| 18–20 lb | 4¼–4½ hours | 4¼–4¾ hours |
| 20–24 lb | 4½–5 hours | 4¾–5¼ hours |
How Long to Thaw and Roast a Turkey (USDA Times)
Most Thanksgiving turkeys are bought frozen, and the thaw is the step people underestimate. USDA FSIS gives three safe ways to thaw: in the refrigerator, in cold water, or in the microwave. Never thaw on the counter or in hot water, because bacteria multiply fastest between 40°F and 140°F. In a refrigerator at 40°F or below, allow about 24 hours for every 4 to 5 pounds: 1 to 3 days for a 4 to 12 lb bird, 3 to 4 days for 12 to 16 lb, 4 to 5 days for 16 to 20 lb, and 5 to 6 days for 20 to 24 lb. A fridge-thawed turkey can then wait 1 or 2 more days before cooking. Cold water is faster, about 30 minutes per pound, but the bird must stay in a leak-proof bag, the water must be changed every 30 minutes, and it has to be cooked immediately. USDA publishes roast times only for a 325°F (163°C) oven: an unstuffed 14 to 18 lb turkey takes about 3¾ to 4¼ hours, and a stuffed one 4 to 4¼ hours. You can roast a turkey straight from frozen, but it takes at least 50% longer. Whatever the clock says, the turkey is done only when a food thermometer reads 165°F (74°C) in the innermost thigh, the innermost wing, the thickest part of the breast, and the center of any stuffing. Let it rest 20 minutes before carving. This calculator looks up the official USDA row for your weight, flags any estimate outside the chart, and works backward from your serve time to tell you when to start thawing and when the bird goes in the oven. Need metric? Convert pounds to kilograms or Fahrenheit to Celsius with our converters.
Common turkey timing mistakes
Starting the fridge thaw too late: a 20 lb bird needs 5 to 6 days in the refrigerator, so it must go in the fridge the weekend before Thanksgiving.
Thawing on the counter or in hot water: USDA says neither is safe because the outside sits in the 40–140°F danger zone.
Trusting the clock or a pop-up timer instead of a food thermometer: doneness is 165°F in the thigh, wing, breast, and stuffing.
Stuffing the bird the night before: mix stuffing just before filling, stuff loosely, and cook immediately, or bake it in a casserole.
Scaling the chart to a hotter oven: USDA times exist only for 325°F, so there is no official time for other temperatures.
Frequently Asked Questions
How long does it take to thaw a turkey in the refrigerator?
USDA: allow about 24 hours for every 4 to 5 lb in a refrigerator at 40°F or below. That is 1 to 3 days for 4 to 12 lb, 3 to 4 days for 12 to 16 lb, 4 to 5 days for 16 to 20 lb, and 5 to 6 days for 20 to 24 lb. A thawed turkey can stay in the fridge 1 or 2 more days before cooking.
How long does it take to thaw a turkey in cold water?
About 30 minutes per pound: 2 to 6 hours for 4 to 12 lb, 6 to 8 hours for 12 to 16 lb, 8 to 10 hours for 16 to 20 lb, and 10 to 12 hours for 20 to 24 lb. Keep it in a leak-proof bag, change the water every 30 minutes, and cook it immediately.
How long do you cook a turkey per pound?
USDA does not publish a single minutes-per-pound figure. It gives ranges by weight at 325°F (163°C): for example, an unstuffed 12 to 14 lb turkey takes 3 to 3¾ hours and a 20 to 24 lb one 4½ to 5 hours. A food thermometer reading 165°F (74°C) decides doneness, not the clock.
What internal temperature should a turkey reach?
165°F (74°C), checked with a food thermometer in the innermost part of the thigh, the innermost part of the wing, the thickest part of the breast, and the center of any stuffing.
Should I stuff the turkey?
USDA says cooking stuffing in a casserole dish is safer. If you stuff the bird, mix wet and dry ingredients just before filling, stuff loosely, cook immediately, and make sure the center of the stuffing reaches 165°F. Never stuff it the night before.
Can I cook a turkey from frozen?
Yes. It is safe to roast a frozen turkey, but it takes at least 50% longer than the thawed times. Remove the giblet packages with tongs during cooking.
How much turkey do I need per person?
USDA allows 1 lb of whole turkey per person, or 1¼ lb per person for a frozen pre-stuffed turkey.
Is it safe to thaw a turkey on the counter?
No. USDA says never thaw a turkey on the counter or in hot water. The outer layer warms into the 40–140°F danger zone where bacteria multiply quickly, even while the center is still frozen.
Handy conversions for turkey day
Calcflux / turkey-thaw-time-1.0.0
Calculation record
- Formula version
- turkey-thaw-time-1.0.0
- Verified
Formula
USDA chart lookup by weight; t_frozen ≥ 1.5 × t_thawed; oven-in = serve − 20 min − roast timeAssumptions
- Chart rows use half-open weight bands (4 ≤ lb < 12, 12 ≤ lb < 16, …, 20 ≤ lb ≤ 24), so a boundary weight gets the longer, safer band. Kilograms are converted with 1 lb = 0.45359237 kg.
Limits
- Roast times exist only for a 325°F oven and the USDA chart weights; off-chart weights show no roast time. Doneness is 165°F on a food thermometer, not the clock.
Related Tools
Ingredient Substitution Calculator
Baking and cooking substitution calculator. Find ingredient swaps with automatic quantity scaling.
Date Difference Calculator
Calculate the exact difference between two dates.
Calorie Calculator
Calorie and TDEE calculator. Find your Total Daily Energy Expenditure and BMR with Mifflin-St Jeor and Harris-Benedict equations, plus macronutrient breakdown for your caloric goals.
Calculation record
How this result is maintained
Calcflux publishes the formula, assumptions, limits, and primary references behind its tools. Automated tests guard the implemented calculation paths and known-answer cases.
- Maintained by
- Calcflux
- Verification
- Formula tests and boundary checks
Last reviewed: