How many square feet are in one acre?

One acre is defined as a unit of area typically used in land measurement. It is equivalent to 43,560 square feet. This standard measure is widely recognized and used in real estate and land development contexts. A good way to visualize an acre is to think of a rectangular plot that measures 208.71 feet on one side and 208.71 feet on the other, which would give an area of one acre.

Understanding this conversion is particularly important for those in fields related to agriculture, real estate, and urban planning, where precise land measurements are necessary for effective decision-making and assessments. The other numbers provided in the question do not correspond to the established measurement of an acre, making this option the only accurate choice.