Pork Tenderloin Cooking Calculator

The USDA recommends a minimum internal temperature of 145°F (63°C) for whole cuts of pork, including tenderloin. This produces a slightly pink, juicy result. Always use a meat thermometer inserted into the thickest part to check doneness.

Resting is essential — it allows the juices to redistribute throughout the meat so they don't spill out when you slice it. For pork tenderloin, a resting time of 5–10 minutes is recommended. Tent the meat loosely with foil to keep it warm.

The times are based on widely accepted guidelines of approximately 20–25 minutes per pound at 400°F for whole tenderloins. However, ovens vary, and the actual cook time can differ based on your specific oven, pan, and whether the meat was cold from the fridge. Always verify doneness with a meat thermometer.

Oven roasting cooks the tenderloin entirely in the oven. The sear-then-roast method involves first searing the tenderloin in a hot skillet for 2–3 minutes per side to develop a crust, then finishing in the oven at a lower temperature. Searing adds a flavorful crust and can shorten total oven time slightly.

It is not recommended to cook pork tenderloin from frozen as it will cook unevenly — the outside may overcook before the inside reaches a safe temperature. Thaw the tenderloin in the refrigerator overnight (or in cold water for a faster option) before cooking for best results.

Most recipes call for 400°F (200°C) for a full oven roast, which yields a nicely browned exterior while keeping the center juicy. If using the sear-then-roast method, finishing in a 375°F (190°C) oven works well. Higher temperatures reduce cook time but require careful monitoring.

While a meat thermometer is the most reliable method, you can also check by piercing the thickest part with a skewer — the juices should run clear (not pink) for well-done. For medium doneness, a slight pinkness is acceptable and safe at 145°F. For best results, always use a thermometer.

Yes, significantly. A heavier tenderloin or one that is thicker in diameter will take longer to cook. This calculator uses the total weight as the primary input, which correlates with both size and thickness. If you have an unusually thick piece, check the internal temperature earlier than suggested and adjust accordingly.