Visually, one acre encompasses 43,560 square feet of land area, which is roughly equivalent to the size of a standard American football field excluding the end zones. To picture it another way, an acre can comfortably accommodate about 16 average-sized tennis courts or roughly a hundred medium-sized automobiles parked side by side. If shaped as a square, each side measures roughly 209 feet. In residential terms, it provides substantial open space, easily holding a large multi-story home, a spacious multi-car driveway, an expansive backyard garden, and a detached workshop or swimming pool.