How many square feet are in one acre?

One acre is defined as being equivalent to 43,560 square feet. This measurement is a standard unit of area that is widely used in real estate, land development, and agriculture, particularly in the United States. An acre is commonly understood as a shape that is 66 feet wide by approximately 660 feet long, but the specific shape can vary. This standard measurement ensures consistency in land transactions and agricultural practices, making it an essential piece of knowledge for anyone working in fields that involve land management or property assessment. Understanding the size of an acre in terms of square feet can help with calculating land area, planning projects, and understanding property sizes in relation to zoning and development regulations.