How many people will 40 gallons of chili serve?

The number of people that 40 gallons of chili can serve depends on the serving size. Typically, a serving of chili is about 1 cup, which is roughly 8 ounces. Since there are 128 ounces in a gallon, 40 gallons equals 5,120 ounces. Therefore, if each person receives a cup (8 ounces), 40 gallons of chili can serve approximately 640 people.