Acres to Square Feet Converter

Yes, exactly. The international acre is defined as 10 square chains, where 1 chain is exactly 66 ft. 10 square chains equals 10 x 66 x 66 = 43,560 sq ft with no rounding. Equivalently, an acre is a strip 1 furlong long (660 ft) by 1 chain wide (66 ft). In metric, 1 acre equals exactly 4,046.8564224 sq m because 1 sq ft is exactly 0.09290304 sq m.

An acre is one furlong by one chain, or 660 ft by 66 ft, which equals 43,560 sq ft. For comparison, an American football field including both 10-yard end zones is 360 ft by 160 ft, or 57,600 sq ft, about 1.32 acres. A square acre is about 208.71 ft per side.

A US suburban single-family lot is typically 0.1 to 0.5 acres. A football field is 1.32 acres. A FIFA soccer pitch is about 1.76 acres. Central Park in New York City is 843 acres (3.41 sq km). The Vatican City covers 110 acres (0.44 sq km), the smallest sovereign state. Liechtenstein covers about 38,500 acres (160 sq km). Yellowstone National Park is 2.38 million acres (9,500 sq km). Going larger, the contiguous US is about 1.9 billion acres, and Russia is about 4.2 billion acres.

1 hectare is 10,000 sq m, the area of a square 100 m on each side. That equals about 2.47105 acres, or 107,639 sq ft. Going the other way, 1 acre is about 0.4047 hectares. The hectare is the standard land-area unit across Europe, Australia, Canada, and most of the world outside the US, while the acre stays dominant in US real estate, agriculture, and zoning. A useful mental shortcut: 1 hectare is roughly 2.5 acres, and 1 acre is roughly 0.4 hectares.

Yes, but the difference is tiny. Because area squares the linear conversion, a US survey acre is about 4 parts per million larger than an international acre, a difference of roughly 0.016 square meters. The US survey foot was retired from federal use at the end of 2022. This converter uses the international acre.