How much salsa and chips for 100 people?

For 100 people, a good estimate is to provide about 2 ounces of salsa per person, totaling 12.5 quarts (or roughly 3 gallons) of salsa. For chips, plan for about 1 ounce per person, which would be around 6.25 pounds of chips. It's always wise to have a bit extra to accommodate varying appetites.