As a guide allow 4 ounces of potato salad per person.
4oz x 50 equals 200oz, that's 12.5 pounds of potato salad.
Some folk may take a little more, some folk won't take any as they might not like potato salad.
Therefore 12.5 pounds should be enough for 50 people.
I would call that about 54 servings.
1 Gallon of potato salad feeds about 30 people, so 3.33 Gallons.
That is 87.5 pounds
how many pounds of potato salad to feed 600
This depends only on your preferences; for example you can use 6-8 lbs.
Between 30-35 pounds should serve 130 people.
There are 4 quarts or 16 cups in a gallon, so if you consider 1/2 cup a serving (pretty standard) , you have 32 servings.
Typically a serving is half a cup volume and weight 4 ounces. There are about 4 servings in a pound of potato salad, depending on density. That would mean 200 servings would be about 50 pounds. That seems to be on the high side.
It would be about 25 pounds. You'll peel them, cook them and then add in all the mixed ingredients. That would be about 100 servings.
If you are making the potato salad, start with the potatoes. 25 pounds of potatoes will make moderate servings for 100.40 pounds will make generous servings for 100, but can easily serve 120.If the potato salad is pre-made, you will need 4 to 4 1/2 gallons to serve 100.
that would depend on how big the salad is... but maybe if it was diced like 50 g of potato for every 100g of salad :)
A fist-sized potato for each person, or the equivalent in smaller potatoes.