How to Roast Beef — Temperatures, Times & Techniques

Adapted from: General culinary reference and cooking science

Category: Kitchen Tips & Techniques

One of the most common kitchen questions — how long and at what temperature do you roast beef? The answer depends on the cut, the size, the oven method, and your target doneness. Here's everything you need to know.

Choosing the Right Cut

Roasting works best for large, tender cuts: rib roast, sirloin roast, sirloin tip, rump, rolled rump, eye-of-round, and top-round. These cuts should be graded prime or choice. Lesser grades and tougher cuts benefit more from braising (low and slow with liquid) rather than dry oven roasting.

Two Schools of Thought on Roasting

Method 1 — Consistent Medium Heat (300°F):

Cook from start to finish at a constant temperature. Reduces shrinkage and sputtering, produces a juicy, evenly-cooked roast. Ideal for beginners.

Method 2 — Hot Start, Then Lower:

Start in a hot oven (425–450°F) for 15–20 minutes to brown the exterior, then reduce to 325°F for the remainder of the time. Creates a better crust. (Note: this does not actually "seal in juices" — that's a cooking myth — but it does improve browning.)

The Golden Rule: Always Use a Thermometer

Internal temperature is the only reliable way to know when a roast is done. A meat thermometer that stays in the roast throughout cooking is ideal. An instant-read thermometer works at the end.

Internal Temperature Guide:

• 120–125°F (49–52°C) — Rare
• 130–140°F (55–60°C) — Medium-rare
• 145–150°F (63–66°C) — Medium
• 155–165°F (68–74°C) — Well done

Roasting Time Reference (at constant 300°F):

Standing Rib Roast (5–8 lbs):

• Rare: 17–19 min/lb
• Medium-rare: 20–22 min/lb
• Medium: 23–25 min/lb
• Well done: 27–30 min/lb

Sirloin Roast (8–12 lbs):

• Rare: 16–20 min/lb
• Medium-rare: 20–22 min/lb
• Medium: 23–25 min/lb
• Well done: 26–30 min/lb

Boneless Top Round:

• Rare: 28–30 min/lb
• Medium-rare: 30–33 min/lb
• Medium: 34–38 min/lb
• Well done: 40–45 min/lb

Important Adjustments:

• Roasting at 325°F instead of 300°F: subtract about 2 minutes per pound
• Roast goes in cold from the refrigerator: add 2–3 minutes per pound
• Always bring the roast to room temperature (1–2 hours out of the fridge) before roasting for more even cooking

The Rest is Non-Negotiable

After pulling the roast from the oven, always rest it covered loosely with foil for 15–20 minutes. This allows the juices to redistribute throughout the meat and makes carving significantly easier.

Important: the internal temperature will rise 5–10°F during rest. Pull the roast out of the oven 5–10 degrees before your target temperature.

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