url: https://perfectpotluck.com/calculator/?guests=40

A Suggested Menu for a Perfect Potluck of 40 Guests Includes:

4 People Bringing Appetizers
1 appetizer = 20-30 small servings

5 People Bringing Main Dishes
1 main dish = a 9×13 pan or 12 pieces (e.g. chicken)

8 People Bringing Side Dishes
1 side dish = approx. 5 cups

4 People Bringing Bread
1 bread = 1 loaf or 12 rolls

4 People Bringing Dessert
2 dozen cookies or 1 cake/pie or 1 half gallon ice cream

3 People Bringing Beverages
2 gallons or 3 two-liters