How Many Racks of Ribs for 75 People
Prices checked Oct 2026, average US grocery prices. Portions follow common catering rules of thumb; safe temperatures follow USDA. How we calculate
Ribs for 75 people is a full catering operation: 38 racks of baby backs or 28 St. Louis racks, a large offset or trailer smoker, and 2–3 people cooking from early morning. Sourcing by the case from Costco or Restaurant Depot rather than a supermarket noticeably lowers the price per pound.
Baby Back vs St. Louis vs Spare Ribs for 75 People
| Cut | Rack weight | Racks for 75 | Total weight |
|---|---|---|---|
| Baby back (loin back) | ~2 lbs, 11–13 bones | 38 racks | 76 lbs (34 kg) |
| St. Louis-cut spare ribs | ~2.75 lbs | 28 racks | 77 lbs (35 kg) |
| Whole spare ribs | ~3.5 lbs, feeds about 3 | 22 racks | 77 lbs (35 kg) |
"Rack" and "slab" mean the same thing. Baby backs are leaner and cook faster; St. Louis spares have more meat per rack, so you buy fewer of them.
Plan for Exactly 75 Guests
| Cooker space | 4 large offset smokers holding about 11 racks each (or 10 kettle-size loads with rib racks) |
|---|---|
| Start time | light the smoker about 6½ hours before serving: 5–6 hours to cook plus a 30-minute rest |
| Rub | about 5.5 lbs of dry rub, applied the night before |
| Butcher paper | about 114 ft if you wrap every rack |
| Holding | finished racks stay hot for up to 4 hours wrapped in foil inside a dry cooler |
| Holding pans | 11 half-size foil pans with lids for about 52 lbs of cooked meat |
| Drinks cooler | 4 × 48-quart coolers for 188 cans, plus 12 × 10-lb bags of ice |
| Serving help | 3 cooking, 3 on serving and refills |
Complete Shopping List for 75
| Item | Quantity | Est. cost |
|---|---|---|
| BBQ Ribs (baby back pork ribs, bone-in weight) | 75 lbs (34 kg) | $375 |
| Charcoal for a long smoke | 56 lbs (4 bags of 16 lbs) | $84 |
| Drinks, mixed (2.5 per person) | 188 | $207 |
| Potato salad (0.3 lb per person) | 22.5 lbs (10 kg) | $56 |
| Coleslaw (0.3 lb per person) | 22.5 lbs (10 kg) | $56 |
| Plates, napkins, cutlery, condiments | 80 plates, 160 napkins | $38 |
| Estimated total | $10.88 per guest | $816 |
Racks (slabs): 38 baby back racks at about 2 lbs each. About half the weight is bone, so expect around 38 lbs of edible meat.
Gear for This Cook
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Adjust for Your Crowd
The numbers above assume adults with ribs as the main dish and two sides. Scale them for your event:
| Situation | Multiplier | BBQ Ribs for 75 |
|---|---|---|
| Main dish, no other meats | ×1 | 75 lbs (34 kg) |
| Served with two other meats | ×0.4 | 30 lbs (14 kg) |
| Big eaters or an all-day event | ×1.25 | 94 lbs (43 kg) |
| Self-serve buffet | ×1.2 | 90 lbs (41 kg) |
Cooking Details
Target temperature: 195–205°F for fall-off-the-bone (safe from 145°F)
Cook time: 5–6 hours at 225°F
Food safety: don't leave cooked meat out more than 2 hours, or 1 hour above 90°F (USDA). Keep hot food above 140°F.
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How many racks of ribs for 75 people?
Plan 38 racks (slabs) of baby back ribs for 75 people, which is half a rack per person. With meatier St. Louis-cut spare ribs, 28 racks is enough.
How many pounds of ribs for 75 people?
Buy about 75 lbs (34 kg) of bone-in ribs for 75 guests, 1 lb per person. Roughly half of that weight is bone, so each guest gets about half a pound of meat.
What does ribs for 75 people cost?
The meat costs about $375 at average US grocery prices ($5.00/lb). With charcoal, drinks, two sides and supplies, budget about $816 in total, or $10.88 per guest.