High school, college and NFL football fields are the same size. A standard football field is 120 yards long. The playing field is 100 yards (300 feet) long, and each end zone is 10 yards (30 feet) deep. The field has a uniform width of 53 1/3 yards (160 feet).
If you calculate the entire area of a football field, including the end zones, it works out to 57,600 square feet (360 x 160).