How this calculation works
The Meat Roasting & Cooking Time Calculator estimates oven cooking durations and safe target internal core temperatures based on USDA food safety recommendations.
Mathematical formula and logic
Cooking Time (mins) = Weight (lbs) × Minutes per Pound (adjusted for oven temperature) + Resting Time (15-20 mins).
Worked example
A 5 lb Beef Roast cooked at 350°F to Medium doneness requires approximately 20 minutes per pound = 100 minutes (1 hour 40 minutes) of roasting, followed by a 15-minute rest.
Calculation assumptions
- Meat starts at cool refrigerator temperature (approx 40°F / 4°C).
- Always verify final doneness with a calibrated meat thermometer placed in the thickest part.
Frequently asked questions
What is the minimum safe internal temperature for poultry?
According to USDA guidelines, all poultry (chicken, turkey, duck) must reach a minimum internal core temperature of 165°F (74°C) to eliminate foodborne bacteria.
Why is resting meat after cooking essential?
Resting allows muscle fibers to relax and reabsorb hot moisture juices throughout the meat rather than leaking out onto the cutting board when sliced.
What is carryover cooking?
Residual heat continues to raise the internal temperature of large roasts by 5°F to 10°F after removing them from the oven. Remove the roast when it is 5°F below your target doneness.
How long should I roast an unstuffed 15 lb Thanksgiving turkey at 325°F?
An unstuffed 15 lb turkey roasted at 325°F typically takes 3.5 to 4 hours (approx 15 minutes per pound) until the thickest part of the thigh registers 165°F.
What is the safe internal temperature for pork?
The USDA recommends cooking whole pork cuts to an internal temperature of 145°F (63°C) with a 3-minute rest, which produces tender, juicy pork with a slight blush of pink.
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