Roast Cooking Time Calculator

About this calculator

Oven roasting time for a joint of meat scales primarily with its weight and the target doneness (rare, medium or well-done), since heat has to penetrate to the center and internal temperature targets differ by roughly 10-15°C between doneness levels. This calculator applies standard minutes-per-pound (or per-kilogram) guidelines, adjusted for the chosen doneness, to estimate total time in the oven.

Home cooks use it to plan meal timing around a roast dinner without guessing, and it's especially useful for larger or unfamiliar cuts where under- or overcooking has real consequences — though a meat thermometer checking internal temperature remains the reliable final check.