UtilibyWritten by the Utiliby editorial team · Last updated October 13, 2026 · Rules and formulas reviewed October 2026
What this free meat cooking time calculator does
Cooking a large piece of meat for a crowd is mostly a timing problem: the turkey must be thawed days ahead, put in the oven at the right moment and rested so that dinner is hot and ready together. This free online meat and turkey cooking time calculator estimates the roasting time for turkey, chicken, beef, pork, lamb and ham by weight and oven temperature, gives the pull temperature, final temperature and resting time, calculates thawing time and builds a plan that works back from the time you want to eat.
Pick a cut, enter the weight in pounds or kilograms, set the oven, and the tool shows the time as a range, a timeline and a table of how it changes at other oven temperatures. It runs in your browser with no sign-up.
How to use the calculator
- Cooking time. Choose the meat, enter its weight and the oven temperature, and pick conventional or fan. For beef and lamb choose a doneness. Enter your guest count to see how much meat to buy.
- Thaw time. Enter the frozen weight and the method (refrigerator, cold water or microwave).
- Plan the day. Choose the meal date and serving time, say whether the meat is frozen and add brining hours. The tool lists each step from thawing to carving with clock times.
- Safe temperatures. A quick reference of safe internal temperatures and steak doneness.
- Print, download or copy the active tab.
How long to cook a turkey
| Turkey weight | Unstuffed at 325°F | Stuffed at 325°F |
|---|---|---|
| 8 to 12 lb | 2¾ to 3 hours | 3 to 3½ hours |
| 12 to 14 lb | 3 to 3¾ hours | 3½ to 4 hours |
| 14 to 18 lb | 3¾ to 4¼ hours | 4 to 4¼ hours |
| 18 to 20 lb | 4¼ to 4½ hours | 4¼ to 4¾ hours |
| 20 to 24 lb | 4½ to 5 hours | 4¾ to 5¼ hours |
These are the widely published guidelines for a fresh or fully thawed turkey. The calculator uses them, interpolating between sizes, and adjusts for oven temperature and fan ovens. Always start checking about 45 minutes before the time is up, and use the temperature, not the clock, to decide.
For an even bird, put it on a rack breast side up, tent the breast with foil if it browns too fast, and roast at 325°F. A spatchcocked (butterflied) turkey roasts in about half the time at 425°F, though it needs the backbone removed. A bird that is cold from the refrigerator will take longer than one that has stood for an hour.
Safe internal temperatures
| Food | Minimum internal temperature |
|---|---|
| Turkey, chicken, duck, ground poultry and stuffing | 165°F (74°C) |
| Ground beef, pork, lamb, veal | 160°F (71°C) |
| Beef, pork, lamb steaks, chops and roasts | 145°F (63°C) plus 3 minute rest |
| Fish | 145°F (63°C) |
| Leftovers and casseroles | 165°F (74°C) |
| Fully cooked ham, reheating | 140°F (60°C) |
These are the USDA's recommended minimums. Measure with a food thermometer in the thickest part, away from bone, fat and gristle. Poultry should be checked in the thigh, wing and breast.
How the cooking time is estimated
Each cut has a reference time at a reference oven temperature, for example 15 minutes per pound at 325°F for a bone-in prime rib roast, or 20 minutes per pound at 375°F for a whole chicken. Some items have a fixed base time plus a time per pound (chicken breasts, boneless turkey breast). Turkeys use a table of published times by weight, because the minutes per pound fall as the bird gets bigger.
For a different oven temperature the time is scaled by the ratio of how far the reference and chosen temperatures are above 60°F, limited to between 0.6 and 1.5 times. Fan ovens take about 12% off the time. Doneness for beef and lamb adjusts the time by about 10% per level. The result is shown as a range of ±10% because the real figure depends on the shape of the meat and the accuracy of your oven. It is an estimate for planning, not a substitute for a thermometer.
Thawing times and safe methods
| Weight | Refrigerator (24 h per 4 to 5 lb) | Cold water (30 min per lb) |
|---|---|---|
| 4 lb | about 1 day | 2 hours |
| 8 lb | 1½ to 2 days | 4 hours |
| 12 lb | 2½ to 3 days | 6 hours |
| 16 lb | 3 to 4 days | 8 hours |
| 20 lb | 4 to 5 days | 10 hours |
| 24 lb | 5 to 6 days | 12 hours |
Refrigerator thawing is the safest and most forgiving: the meat stays at a safe temperature the whole time, and once thawed it keeps for another 1 to 2 days before cooking. Cold water thawing is faster but needs attention: keep the bird in a leak-proof bag, submerged, and change the water every 30 minutes. Cook it immediately. Microwave thawing is suitable for small cuts and requires cooking at once.
Resting meat and carryover cooking
Take roasts out of the oven before they reach their final temperature. The hot outside continues to heat the centre for several minutes, raising it by about 5 to 10°F on a large roast. Resting for 15 to 30 minutes then lets the muscle fibres relax, so more of the juice stays in the meat when you slice. Cover loosely with foil; tight covering steams the skin and loses the crispness. Large cuts such as prime rib, brisket and turkey benefit most, whereas small steaks need only 5 minutes.
How much meat to buy per person
| Meat | Raw weight per person |
|---|---|
| Whole turkey (bone-in) | 1 to 1½ lb |
| Turkey breast, bone-in | ¾ lb |
| Turkey breast, boneless | ½ lb |
| Whole chicken | 1 lb |
| Prime rib, bone-in | 1 lb |
| Beef tenderloin | ½ lb |
| Pork loin | ½ lb |
| Pork shoulder (pulled pork) | ¾ lb raw, about ⅓ lb cooked |
| Ham, bone-in | ¾ lb |
| Leg of lamb, bone-in | ¾ to 1 lb |
Add up to 25% if big eaters or leftovers are part of the plan.
Tips for juicier, safer roasts
- Use a probe thermometer left in the meat with an alarm, plus an oven thermometer to check the real oven temperature.
- Pat the meat dry before roasting for better browning, and salt it well ahead of time.
- Do not open the oven door unnecessarily; each time costs 10 to 15°F.
- Let large roasts and birds stand out of the refrigerator for 30 to 60 minutes (not more than 2 hours) before roasting.
- Use a roasting rack so heat circulates under the meat.
- Keep raw meat away from other foods and wash hands, boards and knives that touch it. Do not rinse raw poultry; it spreads bacteria.
- Refrigerate leftovers within 2 hours and use them within 3 to 4 days.
Fan, convection and altitude
A fan oven moves hot air around the meat so it cooks faster and browns more. Lower the temperature by 25°F (15°C) or shorten the time by about 10 to 15%. At high altitude (above about 3,000 feet) water boils at a lower temperature, so braised and covered dishes take longer, while roasts in dry heat are less affected. Always judge by temperature.
Planning a holiday dinner
A good holiday plan starts days ahead: thaw in the refrigerator, brine the day before, set the table and make side dishes that reheat well. On the day, count back from the serving time: carve after resting 20 to 30 minutes, take the bird out of the oven then, and put it in the oven about 3 to 5 hours earlier depending on size. Remember that the oven is busy: sides that need the oven can go in while the turkey rests, since a rested bird stays hot. The Plan tab produces this timeline for you.
Common mistakes
- Cooking by the clock instead of the thermometer.
- Thawing on the counter.
- Not allowing enough thawing days.
- Opening the oven too often.
- Carving straight away.
- Forgetting that stuffing must also reach 165°F.
- Putting the probe into bone, which reads too hot.
Privacy
This calculator runs in your browser. Nothing you enter is sent to a server or stored, and reloading restores the example. Downloaded files are created on your device.
Frequently asked questions
How long do I cook a turkey per pound?
At 325°F (160°C) an unstuffed turkey needs roughly 13 to 17 minutes per pound, with larger birds taking fewer minutes per pound. About 2¾ to 3 hours for 8 to 12 lb, 3 to 3¾ hours for 12 to 14 lb, and 4½ to 5 hours for 20 to 24 lb. Always check that the thickest part of the thigh and breast reach 165°F (74°C).
What temperature should turkey be cooked to?
165°F (74°C) in the thickest part of the breast, the innermost part of the thigh and the wing, as measured by a food thermometer. If the bird is stuffed, the stuffing must also reach 165°F (74°C).
How long should I thaw a turkey?
In the refrigerator allow 24 hours for every 4 to 5 pounds, so a 16 lb turkey needs 3 to 4 days. In cold water allow 30 minutes per pound, changing the water every 30 minutes. Never thaw it on the counter.
Can I cook a turkey from frozen?
Yes. It is safe, and takes about 50% longer than a thawed bird. Do not stuff a frozen bird, and remove the giblet bag when it has loosened. Check the temperature in several places.
How much turkey do I need per person?
Plan about 1 to 1½ pounds of whole bone-in turkey per person (1½ lb if you want leftovers), about ¾ lb for a bone-in breast and ½ lb for a boneless breast. Enter your guest count and the calculator gives the weight to buy.
Should I cook the turkey stuffed or unstuffed?
Unstuffed cooks faster and more evenly, and is safer, because the stuffing in the cavity must reach 165°F (74°C) by the time the meat is done. Many cooks bake the stuffing in a separate dish.
How long should turkey rest before carving?
Rest 20 to 30 minutes, loosely covered with foil. Resting lets the juices redistribute so the meat stays moist, and it makes carving cleaner. Large birds stay hot for much longer than you expect.
How long do I cook a whole chicken?
At 375°F (190°C) about 20 minutes per pound, so a 4 lb chicken takes roughly 80 minutes. Check that the thickest part of the thigh reaches 165°F (74°C); dark meat tastes better at about 175°F (80°C).
How long do I cook a prime rib?
At 325°F (160°C) allow about 15 minutes per pound for medium rare with a bone-in roast. Pull it at about 125 to 130°F (52 to 54°C) and rest 20 to 30 minutes; it will rise to about 135°F (57°C). Doneness temperatures are in the Cook time and Safe temperatures tabs.
How long do I cook a pork loin or pork roast?
At 350°F (175°C) roughly 20 to 25 minutes per pound, until the centre reaches 145°F (63°C), then rest 3 minutes or more. Pork shoulder for pulled pork is cooked low and slow, about 90 minutes per pound at 300°F until it reaches 195 to 205°F.
How long to cook a ham?
A fully cooked ham only needs reheating to 140°F (60°C), about 15 minutes per pound at 325°F. A raw ham needs to reach 145°F (63°C), about 22 minutes per pound, then a 3 minute rest.
Does oven temperature change the cooking time?
Yes. Roughly, time is inversely related to how far the oven is above room temperature, so 350°F is about 10% faster than 325°F and 300°F is about 10% slower. The tool adjusts for this. Fan ovens cook faster; the tool takes about 12% off, or you can lower the temperature by 25°F.
Should I cook meat to a time or to a temperature?
A temperature. Times are estimates; ovens, pans and the shape of the meat all change them. Use the time to plan the meal, and a probe or instant-read thermometer to decide when it is done.
What is carryover cooking?
Large roasts keep cooking after you take them out of the oven because the hot outside heats the centre. The temperature rises about 5 to 10°F (3 to 6°C) on a large roast. That is why steaks and roasts are pulled a little below the final temperature.
Is a pink turkey or chicken safe?
Colour is not a reliable indicator. Properly cooked poultry can look slightly pink near the bone, and fully cooked meat can still be pink for harmless reasons. Go by a thermometer reading of 165°F (74°C).
Should I brine my turkey?
A wet or dry brine of 12 to 48 hours seasons the meat deeply and helps it hold moisture. The plan tab lets you add brine hours. A wet-brined turkey should be rinsed and dried well, and the pan juices will be salty.
Can I use this for a Thanksgiving or Christmas plan?
Yes. Set the meal date (a button sets Thanksgiving Day), the serving time, the weight, whether it is frozen and any brining. The plan tab works back to give you the day to start thawing, when to take the bird out of the refrigerator, when to preheat and when to put it in.
Can I print or save the plan?
Yes. Print / save as PDF prints only the active tab, which is useful as a checklist on the fridge. You can also download a CSV or copy the summary. Nothing is uploaded.
Sources and further reading
- USDA Food Safety and Inspection Service (FSIS), Safe Minimum Internal Temperature Chart and Let's Talk Turkey: roasting times and thawing guidance.
- USDA FSIS guidance on thawing meat and poultry: refrigerator, cold water and microwave methods.
- Culinary roasting guides from major test kitchens for per-pound times and carryover cooking (rounded planning figures, not measured results).
Sources were consulted in October 2026. Standards and rules can change, so always check the official page for your situation.