Beef Roast Time Calculator
Estimate oven roasting time by weight, doneness, oven temperature, and rest time.
Tip: Always confirm doneness with an instant-read thermometer in the thickest part of the roast.
How long does a beef roast take to cook?
A typical beef roast takes about 20 to 30 minutes per pound at 325°F, depending on how done you want it. Leaner and more tender cuts (like rib roast or top sirloin roast) often roast more predictably, while tougher cuts can vary based on shape and marbling.
This calculator gives you a practical estimate, then adjusts based on your oven temperature and whether the roast is bone-in.
Base beef roast cooking time per pound (at 325°F)
- Rare: ~20 minutes per pound (pull around 120–125°F)
- Medium-rare: ~22 minutes per pound (pull around 130–135°F)
- Medium: ~25 minutes per pound (pull around 140–145°F)
- Medium-well: ~28 minutes per pound (pull around 150–155°F)
- Well-done: ~30 minutes per pound (160°F+)
Quick roast timing examples
These examples assume 325°F, boneless roast, and medium-rare:
- 2 lb roast: about 44 minutes
- 3 lb roast: about 66 minutes
- 4 lb roast: about 88 minutes
- 5 lb roast: about 110 minutes
Then add resting time (usually 15 to 20 minutes) before slicing.
How to roast beef for best results
1) Bring the roast closer to room temp
Let the roast sit out 30 to 60 minutes before cooking. This helps it cook more evenly.
2) Season generously
Salt, pepper, garlic, rosemary, and thyme are classic. You can also add a light oil rub to improve browning.
3) Use a meat thermometer
Time is a guide. Internal temperature is what matters most for food quality and safety.
4) Rest before slicing
Resting allows juices to redistribute and improves tenderness. During resting, internal temperature often rises another 5°F (carryover cooking).
Internal temperature guide for beef roast
- Rare: 120–125°F (49–52°C)
- Medium-rare: 130–135°F (54–57°C)
- Medium: 140–145°F (60–63°C)
- Medium-well: 150–155°F (66–68°C)
- Well-done: 160°F+ (71°C+)
USDA minimum safe temperature for whole cuts of beef is 145°F with a rest period. Many cooks prefer lower pull temps for texture, then rely on carryover heat.
Factors that can change total roast time
- Roast shape: Thick, compact roasts cook differently from long, thin ones.
- Bone-in vs boneless: Bone-in roasts can take a bit longer in home ovens.
- Starting temperature: A fridge-cold roast needs extra time.
- Oven accuracy: Some ovens run hot or cool by 10–25°F.
- Pan material and airflow: Roasting pan size and rack position matter.
Frequently asked questions
Can I cook a roast at 350°F instead of 325°F?
Yes. A hotter oven generally shortens cook time. This calculator automatically adjusts time based on the temperature you enter.
Should I cover beef roast with foil?
For classic dry roasting, leave it uncovered so the exterior browns. If the surface darkens too quickly, tent loosely with foil late in cooking.
What if my roast is done early?
Rest it, then tent with foil. It can hold heat for quite a while. You can also slice and keep warm with a little broth.
Is this calculator for pot roast?
Not exactly. Pot roast is typically braised with liquid at lower heat and follows a different timing approach. Use this calculator for oven-roasted beef cuts.