How Long to Cook Pork Tenderloin

By The Recipes by Mom kitchen · Last checked October 21, 2026 · Not kitchen-tested; see how our recipes are made

A whole pork tenderloin weighing between 1 and 1 1/2 pounds will typically roast in 20 to 27 minutes at an oven temperature of 400°F to 425°F (200°C to 220°C). The most reliable way to determine doneness is not by time, but by internal temperature. According to USDA guidelines, pork is safely cooked when it reaches an internal temperature of 145°F (63°C), followed by a 3-minute rest period.

The cooking times provided are estimates for common preparation methods, including roasting and grilling. These times can help you plan your meal, but always confirm the pork is fully cooked using a meat thermometer.

How Long to Cook Pork Tenderloin: time chart

Table source: Typical ranges from standard cooking practice, not an official chart. Ovens, grills and pieces vary: start checking at the low end of each range.

Good to know

• Tuck the thin tail under so it does not overcook
• Slice after resting

Factors that affect cooking time

The times in any recipe or chart are a starting point. Several factors can change how long it actually takes for your pork tenderloin to cook through.

• Oven Temperature: As shown in the data, a higher oven temperature of 425°F (220°C) can cook the pork faster than a lower temperature of 400°F (200°C). Ovens can also have hot spots, so the actual temperature may vary from the setting.
• Size and Shape: Pork tenderloins are not uniform. A thicker, heavier tenderloin will take longer to cook than a smaller one. The thin, tapered end, or tail, will cook much faster than the thicker center.
• Starting Temperature: A tenderloin placed in the oven directly from the refrigerator will take longer to cook than one that has rested at room temperature for a short time before cooking.
• Cooking Method: Searing the tenderloin in a hot pan before placing it in the oven creates a flavorful crust and shortens the roasting time. Grilling over direct heat is also a faster method than roasting.

How to tell when pork tenderloin is done

Using a digital instant-read thermometer is the only way to ensure pork is cooked to a safe temperature without overcooking it. Visual cues like the color of the juices or the firmness of the meat are not reliable indicators of doneness.

To check the temperature correctly, insert the thermometer probe into the thickest part of the tenderloin. For a whole pork tenderloin, the target is 145°F (63°C). Once it reaches this temperature, remove the pork from the heat source immediately to prevent it from overcooking. The temperature will continue to rise slightly as it rests.

The USDA advises a 3-minute rest period after the pork has been removed from the heat. This rest allows the juices to redistribute throughout the meat, resulting in a more tender and flavorful result. It also ensures the pork is safe to eat.

Tips for the best results

A few simple techniques can help you cook a pork tenderloin well.

• Pat the Pork Dry: Before seasoning, use paper towels to pat the surface of the tenderloin completely dry. A dry surface helps seasonings adhere better and allows the meat to brown more effectively, whether you are searing it in a pan or roasting it in the oven.
• Tuck the Tail: A pork tenderloin has a thick end and a thin, tapered end. To promote even cooking, you can fold the last few inches of the thin end underneath the rest of the loin. This creates a more uniform thickness, helping to prevent the tail from drying out before the center is cooked.
• Let It Rest: The 3-minute rest after cooking is essential for food safety and quality. Place the cooked tenderloin on a cutting board and let it sit undisturbed. Do not slice it immediately. This resting period allows the muscle fibers to relax and reabsorb the juices.
• Slice Correctly: For maximum tenderness, slice the rested pork tenderloin against the grain. Look for the direction the muscle fibers run along the meat, and cut perpendicular to them.

Sources and method

• USDA FSIS Safe Minimum Internal Temperature Chart
• Time ranges not marked as USDA are typical ranges from standard cooking practice

Last checked October 21, 2026.