Roasting Time Calculator

How long a joint needs, and the temperature to pull it at

Use the roasting time calculator

Members get the full set of kitchen calculators. Everything below on this page is free to read.

For example
A 1.8 kg chicken at 190 °C needs roughly 1 hr 25 min · pull it at 74 °C in the thickest part of the thigh
  • Roasting time from the actual weight of your joint
  • Target internal temperatures, which are what doneness really means
  • Resting time included, because it is part of the cooking

The reference tables and worked examples further down this page are free for everyone.

Time gets you close, temperature gets you right

Minutes per kilo is a decent way to plan lunch and a poor way to decide whether meat is cooked. The same joint takes different times depending on its shape, how cold it was when it went in, whether the oven runs hot, and how often you opened the door. A £15 probe thermometer settles all of that.

Use the time to know when to start checking. Use the internal temperature to know when to stop.

Internal temperatures

MeatPull from oven atAfter resting
Chicken and turkey72 °C74 °C+
Pork60 °C63 °C
Beef, rare48 °C52 °C
Beef, medium rare52 °C57 °C
Beef, medium57 °C63 °C
Beef, well done66 °C71 °C
Lamb, medium rare52 °C57 °C
Slow-cooked shoulder or brisket90–95 °C

Meat carries on cooking after it leaves the oven — carryover of about 3–5 °C on a joint, more on something very large. That is why every figure above is lower than the temperature you actually want to eat at.

Resting is not optional

A joint cut straight out of the oven loses its juices onto the board. Ten to twenty minutes under loose foil lets the muscle relax and reabsorb them, and the carryover finishes the cooking. A big turkey can rest for 45 minutes and still be hot enough.

Where the probe goes

Into the thickest part, away from bone — bone conducts heat and reads high. On a chicken that means the inner thigh, not the breast; the thigh is the last part to come up to temperature, so it is the part that decides.

Slow cooking is a different measurement

Pork shoulder and brisket are not judged by doneness in the usual sense. They need to reach roughly 90–95 °C and stay there long enough for the connective tissue to break down, which is why they read "overcooked" on a steak scale and are exactly right on their own. Judge those by feel: the probe should slide in with almost no resistance.

About this calculator

Roasting times are given per kilo for a reason: a joint twice the size does not take twice as long to be safe, but it does take longer. Enter the weight and the cut, and check the internal temperature at the end — the thermometer is the only thing that actually knows.