Cook pork tenderloin at 375°F for about 20–25 minutes per pound. Begin checking early, and remove it when the center reaches 145°F. Rest the tenderloin for 3 minutes before slicing. A 1-pound tenderloin typically takes 20–25 minutes.
How Long To Cook Pork Tenderloin In Oven At 375 Per Pound: plan 20–25 minutes per pound. A 1-pound tenderloin usually needs 20–25 minutes, but thickness affects timing more than weight.
Check the center with a food thermometer. Pork tenderloin is ready at 145°F (63°C), then needs a 3-minute rest. Begin checking near the low end to prevent overcooking.
The Short Answer, With Numbers
Cook pork tenderloin at 375°F for about 20–25 minutes per pound. Use internal temperature, not the clock, as the deciding test because thickness, starting temperature and oven accuracy change the timing.
| Pork cut | Oven target | Remove at | Rest |
|---|---|---|---|
| Tenderloin, treated as a pork roast | 375°F | 145°F (63°C) | 3 minutes |
Timing Examples
- ½-pound tenderloin: Plan 10–13 minutes, then check the center.
- ¾-pound tenderloin: Plan 15–19 minutes, then check.
- 1-pound tenderloin: Plan 20–25 minutes.
- 1½-pound tenderloin: Plan 30–38 minutes.
- 2-pound tenderloin: Plan 40–50 minutes.
Insert a thermometer into the thickest center section. Avoid the tip and the pan because either location can give a misleading reading.
Remove the tenderloin when the center reaches 145°F (63°C). Rest it for 3 minutes before slicing, as specified for pork steaks, chops and roasts.
Edge Cases That Change the Clock
A cold tenderloin from the refrigerator usually needs more time than one that has stood briefly before cooking. Start checking at the low end of the range.
A thick, short tenderloin cooks more slowly per pound than a thin, narrow one. Two separate pieces can cook faster than one piece with the same combined weight.
If the tenderloin weighs 1¼ pounds, calculate 25–31 minutes, then check the temperature. If it weighs 1¾ pounds, calculate 35–44 minutes.
Oven time alone cannot verify doneness. If the center is below 145°F (63°C), return the pork to the oven and check again after several minutes.
After the 3-minute rest, slice across the grain. Record the actual cooking time for your oven, pan and tenderloin shape to improve the next estimate.
Pork Tenderloin Cooking Time
At 375°F, cook pork tenderloin for about 20 to 25 minutes per pound. Begin checking the center at 20 minutes per pound because tenderloins vary in thickness.
Time by Tenderloin Weight
| Weight | Estimated oven time at 375°F | Begin checking |
|---|---|---|
| ¾ pound | 15 to 19 minutes | 15 minutes |
| 1 pound | 20 to 25 minutes | 20 minutes |
| 1¼ pounds | 25 to 31 minutes | 25 minutes |
| 1½ pounds | 30 to 38 minutes | 30 minutes |
| 2 pounds | 40 to 50 minutes | 40 minutes |
For a 1-pound tenderloin, roast for about 20 to 25 minutes. For a 1½-pound tenderloin, roast for about 30 to 38 minutes.
Use the weight as a starting estimate, not the final test. A short, thick tenderloin can take longer than a narrow tenderloin with the same weight.
Insert an instant-read thermometer into the thickest center section. Pork tenderloin is safe when it reaches 145°F (63°C).
After reaching 145°F, rest the tenderloin for 3 minutes. The rest keeps the required temperature and helps the juices settle before slicing.
Adjustments That Change Cooking Time
- Cook a cold tenderloin near the longer end of the range.
- Cook two tenderloins side by side by checking each one separately.
- Do not add their weights together; each tenderloin cooks according to its own thickness.
- A covered roasting dish can slow browning and alter the timing, so rely on the thermometer.
- A tenderloin cut into medallions cooks faster than a whole tenderloin.
Remove visible silver skin before roasting, then place the tenderloin in a single layer. Check the thickest section, avoid touching the pan, and return it to the oven if it has not reached 145°F.
Time Per Pound At 375
At 375°F, plan on 20 to 25 minutes per pound for pork tenderloin. Use the time as a starting estimate, because thickness, starting temperature, and oven accuracy change the result.
Quick Time Guide
| Raw tenderloin weight | Estimated oven time at 375°F | Begin checking |
|---|---|---|
| ¾ pound | 15 to 19 minutes | 15 minutes |
| 1 pound | 20 to 25 minutes | 20 minutes |
| 1½ pounds | 30 to 38 minutes | 30 minutes |
| 2 pounds | 40 to 50 minutes | 40 minutes |
For a 1-pound tenderloin, roast for about 20 minutes, then measure the thickest center. Continue in 3- to 5-minute intervals until it reaches 145°F.
For a 1½-pound tenderloin, 30 minutes is the first check. A thicker piece may need 35 to 38 minutes, even when its weight matches a thinner tenderloin.
For two separate 1-pound tenderloins, calculate each piece independently, but roast them together. Start checking at 20 minutes and test the thicker piece first.
Temperature And Resting
Remove pork tenderloin at 145°F (63°C) in the thickest part. Let it rest for 3 minutes before slicing.
Insert the thermometer from the side into the center. Avoid touching the pan, the tip, or a large fat seam, because those spots can give an inaccurate reading.
A tenderloin straight from the refrigerator usually follows the guide more closely than a partially frozen piece. Add cooking time in short intervals and rely on the thermometer, not color.
If the tenderloin weighs more than 2 pounds, check its shape before multiplying the rate. A long, narrow piece cooks faster than a compact, thick roast of the same weight.
How To Calculate Cooking Time
At 375°F, plan on 20–25 minutes per pound for pork tenderloin. Use this as an estimate, not a guarantee, because tenderloin thickness changes the cooking rate.
Five-Step Calculation
- 1. Weigh the tenderloin. Record the weight in pounds. A 0.75-pound tenderloin weighs 12 ounces; a 1.5-pound tenderloin weighs 24 ounces.
- 2. Multiply by 20–25 minutes. For 0.75 pound, calculate 15–19 minutes. For 1 pound, calculate 20–25 minutes.
- 3. Set the first check early. Begin checking at the low end of the range. Check a 0.75-pound tenderloin after 15 minutes and a 1.5-pound tenderloin after 30 minutes.
- 4. Measure the center. Insert a thermometer into the thickest section from the side. Avoid touching the pan or inserting the probe only into the tapered end.
- 5. Finish by temperature and rest. Remove the pork when the center reaches 145°F (63°C), then rest it for 3 minutes before slicing.
For a 1.25-pound tenderloin, multiply 1.25 by 20 and 25: the estimate is 25–31 minutes. Start checking at 25 minutes, then recheck every 3–5 minutes.
For two tenderloins, calculate from the weight of each piece, not their combined weight. Two 0.75-pound pieces may cook faster than one thick 1.5-pound piece because heat reaches their centers sooner.
A tenderloin under 1 pound still needs a temperature check. Do not reduce the oven time by treating the weight as a full pound; use its actual weight and start checking early.
A thick, tightly tied tenderloin may need more than 25 minutes per pound. A thin or butterflied piece may finish sooner. Thickness, starting temperature, pan material and oven accuracy affect the final time.
If the pork has not reached 145°F (63°C), return it to the oven and check again after 3–5 minutes. Rest for 3 minutes after it reaches the target.
Steps For Oven Cooking
Use 375°F for steady roasting. Plan on 20 to 25 minutes per pound, then verify the center with a thermometer. Pull pork tenderloin at 145°F and rest it 3 minutes.
Basic 375°F Method
Heat the oven to 375°F. Pat the tenderloin dry, trim silver skin, and season all sides. Use 1 teaspoon kosher salt per pound as a precise starting point.
Place the pork on a rimmed pan or in a shallow roasting dish. Keep the thickest part toward the center of the pan so heat reaches both ends evenly.
Roast uncovered. Start checking early because pork tenderloin is narrow and can jump several degrees fast near the end.
| Pork tenderloin weight | Estimated time at 375°F | First thermometer check |
|---|---|---|
| 1 lb | 20 to 25 minutes | 18 minutes |
| 1.25 lb | 25 to 31 minutes | 22 minutes |
| 1.5 lb | 30 to 38 minutes | 27 minutes |
| 2 lb | 40 to 50 minutes | 36 minutes |
Worked Examples
A 1.25 lb tenderloin uses this math: 1.25 × 20 = 25 minutes low end, and 1.25 × 25 = 31 minutes high end. Check at 22 minutes, then every 3 minutes.
A 1.5 lb tenderloin should take about 30 to 38 minutes. If the center reads below 145°F at 30 minutes, return it to the oven and recheck in 3 minutes.
Two 1 lb tenderloins do not equal one 2 lb roast. Cook by individual thickness, not total pan weight. Start checking both pieces at 18 minutes.
Edge Cases That Change Timing
If the tenderloin is tied, stuffed, or unusually thick, the time can run longer. Use the thermometer reading, not the per-pound estimate, as the final decision.
If the pan is crowded, add a few minutes because air circulation drops. Leave at least 1 inch between pieces for more even browning and faster cooking.
After the center reaches 145°F, move the pork to a board. Rest 3 minutes before slicing so the safe temperature requirement is met and juices settle.
Resting And Slicing Instructions
Rest pork tenderloin 3 minutes after it reaches 145°F (63°C). This rest time is part of the USDA minimum for pork cuts and helps the juices settle before slicing.
Move the tenderloin from the oven to a clean cutting board. Tent it loosely with foil, leaving gaps at the sides so steam can escape and the crust does not soften too much.
Start the 3-minute timer only after the center has read 145°F (63°C) on a food thermometer. Do not count time spent carrying the pan, opening foil, or checking the temperature.
Worked Timing Examples
For a 1-pound pork tenderloin cooked at 375°F, pull it only when the thickest center reads 145°F (63°C). Rest 3 minutes, then slice. Total slicing delay: 3 minutes, not 5 or 10.
For a 1 1/2-pound tenderloin, use the same rule. Weight changes oven time, not the rest rule. Once the center is 145°F (63°C), rest exactly 3 minutes before cutting.
For 2 tenderloins on one pan, check each piece. If one reaches 145°F (63°C) first, move it to the board and rest it 3 minutes while the thicker one keeps cooking.
How To Slice
Cut across the grain, not lengthwise. Pork tenderloin fibers usually run from end to end, so crosswise slices shorten the fibers and make each bite more tender.
Use 1/2-inch slices for dinner plates. A 1-pound tenderloin usually gives 10 to 12 slices at this thickness, depending on trimming and tapered ends.
Use 1/4-inch slices for sandwiches, rice bowls, and salads. A 1-pound tenderloin usually gives about 18 to 24 thin slices.
Slice the tapered end last if serving guests. The narrow tip can be slightly firmer or darker because it cooks faster than the thick center.
Edge Cases
If juices run onto the board, do not discard them. Spoon them over the sliced pork or mix them into pan sauce. They carry salt, seasoning, and meat flavor.
If the tenderloin was stuffed, use the poultry-style stuffed rule only if poultry is involved. For plain pork tenderloin, use 145°F (63°C) plus a 3-minute rest.
If the center is below 145°F (63°C), return it to the oven. Resting is not a substitute for reaching the safe minimum internal temperature.
Frequently Asked Questions
How long do you cook pork tenderloin at 375°F per pound?
Cook pork tenderloin at 375°F for about 20 to 25 minutes per pound. A 1-pound tenderloin often takes 20 to 25 minutes; a 1.5-pound tenderloin takes about 30 to 38 minutes. Use a thermometer, not time alone.
What internal temperature should pork tenderloin reach at 375°F?
Pork tenderloin should reach 145°F, then rest for 3 minutes. Check the thickest part with an instant-read thermometer. Pull it when it hits 145°F; the rest time finishes the safe doneness without drying the lean meat.
How long does a 2-pound pork tenderloin take at 375°F?
A 2-pound pork tenderloin usually takes about 40 to 50 minutes at 375°F. Start checking at 35 minutes because tenderloins vary in thickness. The target is 145°F in the center, followed by a 3-minute rest.
Should pork tenderloin be covered in the oven at 375°F?
Roast pork tenderloin uncovered at 375°F if you want browned edges. Cover it loosely with foil only if the outside browns too fast before the center reaches 145°F. Rest it 3 minutes before slicing to keep juices in the meat.
How do I keep pork tenderloin from drying out at 375°F?
Do not cook by minutes alone. Check early, around 18 minutes per pound, and remove the pork tenderloin at 145°F. Rest it 3 minutes before cutting. Searing first, using a light oil coating, and slicing across the grain also help.
