How many sq ft is 12 x 12?

12 inches * 12 inches = 1 sq foot

12 feet * 12 feet = 144 sq feet

12 yards * 12 yards = 108 sq feet ::::See edit below

12 miles * 12 miles = 4014489600 sq feet.

12 yards x 12 yards = 36 x 36 = 1296 sq ft.