Bake pork tenderloin at 400°F (204°C) until it reaches an internal temperature of 145–150°F (63–65°C), then let it rest 5–10 minutes before slicing for juicy, slightly pink meat.

Ideal Oven Temperature

  • Most modern recipes recommend a hotter oven, usually 400°F for pork tenderloin.
  • Some cooks go as low as 375°F or as high as 425°F, but 400°F is a sweet spot that cooks quickly without drying the meat.

Internal Temperature & Doneness

  • Pork tenderloin is considered safe when the internal temp hits at least 145°F, with a short rest.
  • For texture and color:
    • 145°F: juicy, with a slightly pink center.
    • 150–155°F: a bit less pink, still moist.
    • 160°F+: fully cooked through, but can be drier.

Always check with an instant‑read thermometer in the thickest part of the tenderloin for accuracy.

Approximate Baking Times at 400°F

For a single pork tenderloin (about 1–1.5 lb):

  • 375–400°F: about 25–35 minutes, depending on thickness.
  • 400°F with a standard 1–1.25 lb tenderloin: start checking at 20–25 minutes.
  • 425°F: around 25–30 minutes for a 1.25 lb piece.

Time is only a guideline—always go by internal temperature, not just the clock.

Simple Step‑by‑Step Method

  1. Preheat oven to 400°F (204°C).
  1. Pat the pork tenderloin dry and rub with oil and seasoning.
  2. Place on a baking sheet or in a shallow roasting pan.
  3. Roast until the thickest part reaches 145–150°F (start checking around 20 minutes for a 1–1.25 lb piece).
  1. Let rest 5–10 minutes before slicing so the juices redistribute.

Mini Forum‑Style Take

“Most newer recipes are baking pork tenderloin hotter and shorter—around 400°F—then pulling it at 145°F so it stays juicy instead of turning into dry, gray cardboard.”

TL;DR: Set your oven to 400°F, bake until the center hits 145–150°F, then rest the meat before cutting for the best balance of safety and juiciness.

Information gathered from public forums or data available on the internet and portrayed here.