How much ribs for 50 people?

For 50 guests, order about 32.8 lb of raw pork rib racks (St. Louis or baby back), which serves about 18.8 lb. That is roughly 3 full + 1 half trays.

How much ribs for 100 people?

For 100 guests, order about 65.6 lb of raw pork rib racks (St. Louis or baby back), which serves about 37.5 lb. That is roughly 6 full + 1 half trays.

Catering portion guide

How much ribs per person?

In short

Plan on 3 to 4 ribs (about 1/3 rack or 6 oz edible meat) per person as a solo main, or 2 ribs if serving alongside pulled pork or brisket. Because bone accounts for nearly half the weight, buy roughly 10 to 12 oz raw bone-in ribs per person: 50 guests needs about 35 to 40 lb raw racks (approx 14 to 17 full slabs).

Buy more ribs than you serve

Pork ribs carry 40% to 50% bone weight, plus smokehouse moisture shrinkage. Buying roughly 1.75x the target cooked edible meat portion covers the bone and cook loss.

Planning factor: 1.75x. For every 1 lb you want to serve, order about 1.75 lb of raw pork rib racks (St. Louis or baby back).

How much ribs for 10 to 100 people

Order is what to buy as raw pork rib racks (St. Louis or baby back). Serves is what reaches the plate after trim and cooking.

Ribs quantities by guest count, showing purchase weight and served weight
Guests	Order	Serves	Trays
10	6.6 lb	3.8 lb	1 full tray
12	7.9 lb	4.5 lb	1 full tray
15	9.8 lb	5.6 lb	1 full tray
16	10.5 lb	6 lb	1 full tray
20	13.1 lb	7.5 lb	1 full + 1 half trays
24	15.8 lb	9 lb	1 full + 1 half trays
25	16.4 lb	9.4 lb	2 full trays
30	19.7 lb	11.3 lb	2 full trays
40	26.3 lb	15 lb	2 full + 1 half trays
50	32.8 lb	18.8 lb	3 full + 1 half trays
60	39.4 lb	22.5 lb	4 full trays
75	49.2 lb	28.1 lb	5 full trays
80	52.5 lb	30 lb	5 full trays
100	65.6 lb	37.5 lb	6 full + 1 half trays

These are standard food-service planning figures, not fixed constants. Real yield moves with cut, trim level, cooking method, and how long the food is held. Weigh your own results once and adjust the factor to your kitchen.

Things that change the number

Baby back ribs are smaller (1.5–2 lb per rack) while St. Louis spares are meatier (2.5–3.5 lb per rack).
On a two-meat BBQ buffet, cut portions in half (2 ribs per guest).
Pre-slicing into 2-bone portions speeds up buffet lines significantly.

Common questions

How much ribs per person?: Plan on 3 to 4 ribs (about 1/3 rack or 6 oz edible meat) per person as a solo main, or 2 ribs if serving alongside pulled pork or brisket. Because bone accounts for nearly half the weight, buy roughly 10 to 12 oz raw bone-in ribs per person: 50 guests needs about 35 to 40 lb raw racks (approx 14 to 17 full slabs).
How much ribs for 50 people?: For 50 guests, order about 32.8 lb of raw pork rib racks (St. Louis or baby back), which serves about 18.8 lb. That is roughly 3 full + 1 half trays.
How much ribs for 100 people?: For 100 guests, order about 65.6 lb of raw pork rib racks (St. Louis or baby back), which serves about 37.5 lb. That is roughly 6 full + 1 half trays.

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