Acreage Calculator

Convert between square feet and acres, or calculate acreage from dimensions

An acre is a unit of land measurement equal to 43,560 square feet. It is the standard unit used in real estate transactions across the United States. Originally defined as the amount of land a team of oxen could plow in one day, the acre remains the primary way land is bought, sold, and assessed in most markets.

Understanding acreage is critical when evaluating property. A standard suburban lot in many parts of the country is between a quarter acre and half an acre, while rural properties are often measured in multiple acres. Knowing the exact acreage of a parcel helps buyers compare properties accurately and understand what they are paying for.

When purchasing land or a home with a large lot, the acreage directly affects the property value, zoning eligibility, and potential uses. Lenders, appraisers, and local planning departments all rely on accurate acreage figures. In many jurisdictions, the minimum lot size for building a single-family home is specified in acres or fractions of an acre.

Zoning regulations often set density limits based on acreage. For example, a zone might allow one dwelling unit per acre, which means a 5-acre parcel could potentially be subdivided into five lots. Understanding acreage is essential for anyone considering land development or subdivision.

If you know the length and width of a rectangular parcel in feet, multiply them together to get the total square footage, then divide by 43,560 to convert to acres. For irregularly shaped parcels, you may need to break the land into simpler shapes, calculate the area of each, and add them together before converting.

For quick mental math, remember that an acre is roughly 209 feet by 209 feet. A football field, including the end zones, is about 1.32 acres. These reference points make it easier to visualize lot sizes when reviewing listings or surveying land in person.

Discrepancies in reported acreage can significantly impact a property's appraised value. If a listing states 2 acres but a survey reveals only 1.7 acres, the price per acre changes and the buyer may be overpaying. Title insurance companies and lenders typically require a survey for land transactions precisely for this reason.

Accurate acreage also affects property taxes, since many counties assess land value on a per-acre basis. Reviewing the county assessor's records and comparing them to a professional survey can uncover errors that either cost you money or present a negotiation opportunity.