How many square feet are there in one acre?

One acre is defined as being equivalent to 43,560 square feet. This measurement is based on a standard conversion that has been established and widely accepted in real estate and land measurement practices.

Understanding the background of how this figure is derived can also be useful. An acre is traditionally understood to be the area of land that could be plowed in one day by a yoke of oxen, which historically influenced land measurement practices. The modern definition of an acre as 43,560 square feet is derived from its geometry, often visualized as a rectangle measuring 66 feet by 660 feet or a square measuring approximately 208.71 feet on each side.

Knowledge of this conversion is essential for appraisers and anyone involved in real estate, as it is a critical part of assessing property sizes and values. Being able to easily convert acres to square feet (and vice versa) is a fundamental skill in property measurement.