How long and at what temperature do you cook roast beef?

The appropriate cooking time and the proper cooking temperature is based on the cut of beef as well as the weight of the roast. A standard tenderloin roast cooks at 425 degrees Fahrenheit for 60 to 70 minutes or until the internal temperature reaches 150 degrees Fahrenheit.

Tenderloin and tri-tip roasts both cook at 425 F. Rib roasts bake at 350 F. All other cuts of beef roasts should cook at 325 F. Cooking time is roughly 30 minutes per pound or until the roast reaches an internal temperature between 135 F and 160 F. A roast with an internal temperature of 135 F is medium-rare, and a roast at 160 F is medium.