150-Guest Backyard Buffet with Cake
Inputs
Result
50 guests × 1.0 lb = 50 lbs food. 50 × 4 = 200 drinks. ceil(50/8) = 7 tables. 50 servings = full sheet cake.
Guests
50
Food
50 lbs
Tables
7
Drinks
200
Party Supply Summary
50 Guests
750 sq ft venue space
Food
50 lbs
Tables
7
Cake
Full sheet

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Inputs
Result
50 guests × 1.0 lb = 50 lbs food. 50 × 4 = 200 drinks. ceil(50/8) = 7 tables. 50 servings = full sheet cake.
Inputs
Result
25 × 0.5 = 12.5 → 13 lbs. 25 × 3 = 75 drinks. ceil(25/8) = 4 tables. Balloons: ceil(25×0.5) + 12 = 25.
Plan 0.5–1 pound of food per guest depending on meal style. Finger foods need 0.5 lbs per person; a full buffet needs 1 lb. For 50 guests with a buffet, prepare 50 lbs of food. A casual BBQ falls in between at 0.75 lbs per guest.
| Guests | Finger Foods | BBQ | Buffet |
|---|---|---|---|
| 25 | 13 lbs | 19 lbs | 25 lbs |
| 50 | 25 lbs | 38 lbs | 50 lbs |
| 75 | 38 lbs | 57 lbs | 75 lbs |
| 100 | 50 lbs | 75 lbs | 100 lbs |
A 1/4 sheet cake serves up to 24 guests, 1/2 sheet serves up to 48, and a full sheet serves up to 96. For 50 guests, order a full sheet cake. If you have more than 96 guests, add a second sheet cake or supplement with cupcakes.
Plan 3–4 drinks per guest for a party lasting 3–4 hours. For 50 guests at a buffet, prepare 200 drinks. Offer a mix of water (40%), soft drinks (40%), and juice or lemonade (20%). For outdoor parties in summer, increase to 5 drinks per person.
Plan 1 standard 8-seat table per 8 guests. For 50 guests you need 7 tables and 50 chairs. For backyard parties, allow 15 sq ft per guest; for restaurants/halls, 12 sq ft. A 50-person backyard party needs about 750 sq ft of usable space.
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Last Updated: Oct 19, 2026
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