How much tuna salad to serve for 200 people?

To serve tuna salad for 200 people, you can estimate about 1/3 to 1/2 cup of tuna salad per person. This means you'll need approximately 67 to 100 cups of tuna salad in total. Converting this to weight, you might want around 20 to 25 pounds of tuna salad, depending on how it's being served (as a sandwich filling, on a salad, etc.). It's always a good idea to prepare a little extra to accommodate varying appetites.