How much prime rib per person?

Plan about 10 oz cooked per adult (6 oz for kids). Convert to raw by multiplying ~1.25 for boneless or ~1.33 for bone-in to cover cooking loss and bones. Add 10–25% if you want leftovers.

How many ribs (bones) do I need?

A good rule is 1 bone per 2 adults. A 3–4 bone roast suits 6–8 adults; 5–7 bones suits 10–14 adults, depending on appetite and sides.

What temperature should I cook prime rib to?

For prime rib, pull from heat about 8–10°F below your target center temp and rest: Rare 120–125°F (pull ~115°F), Medium-Rare 130–135°F (pull ~122°F), Medium 140–145°F (pull ~132°F).

Is it okay to cook a roast from frozen?

Yes—add about 50% more cook time and monitor the center with a probe. Keep oven temps moderate (225–275°F) for even heating, then sear hot at the end. Or use sous vide to defrost and cook evenly before searing.

How long does fridge thawing take?

Budget roughly 24 hours in the fridge for every 5 lb of roast. As a faster same-day option, use a sealed bag in 32–40°F cold water, changing water every 30–60 minutes—about 1 hour per lb.

Prime Rib & Holiday Roast Calculator

Size, time, temp & timeline—solved. Enter guests, bone-in vs boneless, doneness, and your serve time. We’ll output pounds to buy, # bones, dry-brine salt, cook temps, and a step-by-step schedule. Eat Wild.

Pro tip: For the most luscious results, choose USDA Prime or richly marbled Wagyu/Kobe. For concentrated flavor, try Dry-Aged. Prefer a specific raising style? Explore Grass-Fed or Grain-Fed. Angus fans: Angus.

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Shopping? For steakhouse results, choose USDA Prime or splurge on Wagyu/Kobe. For big, nutty aroma, try Dry-Aged. Prefer provenance? Grass-Fed or Grain-Fed. Browse all Roasts.

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Prime Rib & Holiday Roast Calculator | Size, Time, Temp & Timeline

Prime Rib & Holiday Roast Calculator

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