Planning a BBQ? Enter the number of guests, choose the type of meat, and see exactly how many pounds of raw meat to purchase. Accounts for bone weight and shrinkage during cooking.
Buying enough meat for a BBQ is harder than it looks. Brisket and pork shoulder lose 40–50% of their raw weight during the 10-hour smoke. Ribs are mostly bone. Boneless steaks shrink 25% but you need bigger portions because there's no bone. Multiply a "1/2 pound per person" rule of thumb by all those variables and the wrong-number error gets expensive — either you run out an hour into the party, or you have 10 pounds of leftover brisket nobody wants.
This calculator does the bone-and-shrinkage math for each meat type and adjusts for appetite level. It assumes the meat is the main course (not a side); for cookouts where burgers are just one of three protein options, scale down accordingly. It also assumes "normal" sides — chips, salad, beans, corn. Carb-heavy buffets (lots of bread, pasta salad) let you cut meat by 15–20% because guests fill up on starches.
The "buy this many pounds raw" number it gives you is what to put in the cart, not what ends up on the plate. After cooking and bone, expect roughly half of that weight to be edible meat. For a 20-person crowd planning on pulled pork sandwiches, you're buying 25–30 pounds of bone-in pork shoulder, ending up with 12–14 pounds of pulled pork, which is about 8–10 ounces per person — a generous sandwich plus seconds for the biggest eaters.
**Scenario:** Smoking pulled pork for a 20-person summer party. Mix of adults and kids. Buns and slaw on the side. **Calculation:** Average appetite, 6 oz cooked per person. Pulled pork yield ~50%, so 12 oz raw per person. 20 × 12 oz × 1.10 buffer = 264 oz = 16.5 lbs raw. Pork shoulders run 7–10 lbs each, so buy 2 shoulders (~17 lbs total). **Result:** 2 bone-in pork shoulders (~17 lbs raw) yields ~8.5 lbs of pulled pork, enough for 20 average sandwiches with a small amount of leftovers. Plan ~14 hours total cooking time at 225°F including the stall.
**Scenario:** St. Louis-style spare ribs for 12 friends, big appetites, ribs as main event with mac and cheese + cornbread sides. **Calculation:** Big appetite = 8 oz cooked per person. Spare rib yield ~32%, so 25 oz raw per person. 12 × 25 oz × 1.10 = 330 oz = 20.6 lbs raw. A St. Louis rack is typically 3 lbs raw → 7 racks needed. **Result:** 7 racks of spare ribs (~21 lbs raw). Plan 5–6 hours at 225°F (3-2-1 method: 3 hrs smoke, 2 hrs wrapped, 1 hr saucing). For lighter eaters or rib-skeptical guests, swap a rack or two for a chicken or sausage option.
**Scenario:** A casual cookout for 30 — both burgers and hot dogs available. Average appetite, lots of sides. **Calculation:** Assume 60% will eat burgers (the rest eat dogs, salads, or skip meat). 18 burger-eaters × 6 oz cooked / 0.78 yield = 138 oz raw = 8.7 lbs ground beef. Round up to 9 lbs (36 quarter-pounders). For hot dogs: 12 dog-eaters × 1.5 dogs each × 2 oz raw = 36 oz of franks = ~2.5 lbs (24 dogs). **Result:** 9 lbs ground beef (36 quarter-pound patties) + 24 hot dogs (~2.5 lbs). The buffer absorbs people who want two burgers. For a tighter budget, drop to 30 patties and 20 dogs — risk a slight shortage but save $25.
**Use this calculator any time you're cooking meat for a group of 8 or more.** For smaller dinner parties, rules of thumb usually work. At scale, the bone-and-shrinkage math compounds and small errors become large ones — buying 25% too little for a 30-person party is much worse than buying 25% too little for a 4-person family meal.
**Special considerations:**
- **Smoked vs grilled:** smoked meats (brisket, pulled pork, ribs) lose more weight (40–50%) than grilled meats (steak, burgers, ~20–25%). Always plan with cook-method-specific yields. - **Multi-protein cookouts:** when you serve two or three proteins, guests typically take ~60% of what they would eat if it were the only option. Scale each protein down by 30–40%. - **Kids:** under-12s eat about half what adults eat for ribs and brisket; closer to 75–100% for burgers and dogs they love. - **Hot weather:** people eat less in the heat. A July afternoon party can run on 80% of the rule-of-thumb portion. - **Time of day:** lunch-time BBQs need less meat than dinner BBQs; people eat heavier later. - **Leftover strategy:** brisket and pulled pork freeze and reheat beautifully. Slight over-ordering is forgivable. Grilled steaks don't reheat as well — be more precise.
**When to add a bigger buffer (20–30% instead of 10%):**
- Football game-day crowds. - Construction crews and outdoor workers. - College-age groups. - "Bring a friend" RSVP situations. - BBQ enthusiasts and competition judges (people who actually came to eat the meat).
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Total Raw Meat
15.0 lbs
Cooked Meat
9.0 lbs
Per Person (raw)
1.50 lbs
Shrinkage
40%
| Detail | Value |
|---|---|
| Meat Type | Ribs (bone-in) |
| Guests | 10 |
| Raw Meat Per Person | 1.50 lbs |
| Total Raw Meat | 15.0 lbs |
| Cooking Shrinkage | 40% |
| Total Cooked Meat | 9.0 lbs |
| Cooked Per Person | 0.90 lbs |