An Acre is approximately the same size as a Football Field!
The acre is a unit of area in a number of different systems, including the imperial and U.S. customary systems. The most commonly used acres today are the international acre and, in the United States, the survey acre.
One international acre is equal 4046.8564224 m2. One U.S. survey acre is equal to 62726400000/15499969 = 4046.8726098 m2.
The area of one acre (red) overlaid on an American football field
One acre comprises 4,840 square yards or 43,560 square feet, (this can be easily remembered as 44,000 square feet, less 1%). Because of alternative definitions of a yard or a foot, the exact size of an acre also varies slightly. Originally, an acre was a selion of land one furlong long and one chain wide. However, an acre is a measure of area, and has no particular width, length or shape.
One acre is 90.75 yards of a 53.33-yard-wide American football field. The full field, including the end zones, covers approximately 1.32 acres.