🐑 Lamb Roast Calculator
Cooking times, temperatures, and a full timeline for lamb. Select your cut, enter the weight, and get your result instantly.
Cooking times are estimates. Always verify doneness with a meat thermometer and refer to USDA food safety guidelines.
How to roast lamb
- 1
Choose your cut
Select from leg of lamb, lamb shoulder
- 2
Enter the weight
Type in the weight in kg or lb
- 3
Set your preferences
Choose oven type, stuffed, bone-in, or spatchcock options
- 4
Get your result
See cook time, oven temp, pull temperature, and rest time instantly
- 5
Plan backwards
Enter your serve time and get a full timeline from thaw to table
Lamb cooking time chart
| Cut | Weight (lb) | Oven Temp | Approx Time | Internal Temp | Rest |
|---|---|---|---|---|---|
| Leg of Lamb | 4 | 350°F | 44m | 135°F | 15 min |
| 8 | 350°F | 1h 28m | 135°F | 15 min | |
| 12 | 350°F | 2h 12m | 135°F | 15 min | |
| Lamb Shoulder | 4 | 320°F | 1h 32m | 160°F | 20 min |
| 8 | 320°F | 3h 4m | 160°F | 20 min | |
| 12 | 320°F | 4h 36m | 160°F | 20 min |
About roasting lamb
USDA recommends cooking lamb to 145°F (63°C) with a 3-minute rest for medium. Adjust doneness to preference.
Cooking times are estimates and depend on oven accuracy, the shape and starting temperature of your meat, and other factors. Always verify doneness with a reliable meat thermometer inserted into the thickest part, avoiding bone.