How Long Does It Take to Bake Pork Tenderloin?
Quick Answer
20–30 minutes at 400°F for a 1-pound tenderloin. Internal temperature should reach 145°F, followed by a 3-minute rest.
Typical Duration
Quick Answer
A pork tenderloin takes 20–30 minutes to bake at 400°F (204°C). The exact time depends on the weight, oven temperature, and whether the tenderloin is stuffed. The USDA recommends cooking pork to an internal temperature of 145°F (63°C), followed by a 3-minute rest.
Baking Times by Oven Temperature
| Oven Temp | 1 lb Tenderloin | 1.5 lb Tenderloin | 2 lb Tenderloin |
|---|---|---|---|
| 375°F | 25–30 minutes | 30–35 minutes | 35–40 minutes |
| 400°F | 20–25 minutes | 25–30 minutes | 30–35 minutes |
| 425°F | 18–22 minutes | 22–27 minutes | 27–32 minutes |
These times assume the tenderloin starts at refrigerator temperature. Letting the meat sit at room temperature for 20–30 minutes before baking can reduce cook time by a few minutes and promote more even cooking.
Baking Times by Weight
Pork tenderloin is a lean, narrow cut that typically weighs between 1 and 2 pounds. Because of its shape, it cooks relatively quickly compared to larger roasts.
- 1 pound: 20–25 minutes at 400°F
- 1.25 pounds: 22–27 minutes at 400°F
- 1.5 pounds: 25–30 minutes at 400°F
- 2 pounds: 30–35 minutes at 400°F
When in doubt, always rely on an instant-read thermometer rather than time alone. Insert the probe into the thickest part of the tenderloin.
Stuffed vs Unstuffed
Stuffing a pork tenderloin adds both preparation time and cooking time:
- Unstuffed: 20–30 minutes at 400°F
- Stuffed (butterflied and rolled): 30–40 minutes at 375°F
When stuffing a tenderloin, butterfly the meat by slicing it lengthwise almost all the way through, then open it flat. Add your filling, roll it back up, and secure with kitchen twine or toothpicks. Lower the oven temperature to 375°F and add 10–15 minutes to account for the extra mass.
Internal Temperature Targets
The USDA updated its pork cooking guidelines in 2011, lowering the safe minimum temperature:
| Doneness | Internal Temp | Description |
|---|---|---|
| Medium-rare | 140°F (not USDA recommended) | Slight pink center, very juicy |
| Medium (USDA recommended) | 145°F | Faint pink center, juicy |
| Well-done | 160°F | No pink, drier texture |
Carryover cooking will raise the internal temperature by 3–5°F after you remove the tenderloin from the oven. Pull it out when the thermometer reads 140–142°F and let it rest for at least 3 minutes to reach 145°F.
The Sear-Then-Bake Method
Many cooks prefer to sear the tenderloin on the stovetop before transferring it to the oven. This method adds a flavorful crust and can slightly reduce oven time:
- Sear the tenderloin in a hot oven-safe skillet with oil for 2–3 minutes per side (about 6–8 minutes total)
- Transfer the skillet directly to a preheated 400°F oven
- Bake for 15–20 minutes until the internal temperature reaches 140–142°F
- Rest for 3–5 minutes before slicing
Total active time is about 25–30 minutes with this approach.
Common Mistakes to Avoid
- Overcooking: Pork tenderloin is very lean and dries out quickly past 150°F. Use a thermometer.
- Skipping the rest: Cutting immediately lets juices escape. Always rest for at least 3 minutes.
- Confusing tenderloin with pork loin: Pork loin is a much larger, thicker cut that takes 45–60 minutes to roast. Tenderloin is narrow and cylindrical.
- Not removing the silver skin: The thin, silvery membrane on the surface won't break down during cooking. Slide a knife under it and pull it off before seasoning.
Tips for the Best Results
- Brine or marinate for 30 minutes to 4 hours for extra moisture and flavor
- Pat the surface dry before seasoning to help browning
- Use a wire rack on a sheet pan to allow air circulation and even cooking on all sides
- Tent with foil during resting to keep the tenderloin warm
- Slice against the grain in 1/2-inch medallions for the most tender bite