Dunams to Square Miles (dunam to mi²)

1 dunam equals 0.0003861021585 square miles (rounded).

1 dunam = 0.0003861021585 square miles

How to convert dunams to square miles

To convert dunams to square miles, multiply the number of dunams by 0.0003861021585. The factor is rounded to 10 significant digits. To go the other way, multiply square miles by 2,589.98811 (rounded).

square miles = dunams × 0.0003861021585

Example: 10 dunams = 0.003861021585 square miles.

About these units

Dunam (dunam)

Middle EasternTraditional unit (still used in some regions)

Exactly 1,000 m² in the modern metric standard. Older Ottoman dunams varied by region, from about 900 to 2,500 m².

Ottoman Turkish dönmek means to turn, and the dunam probably follows the Byzantine Greek stremma, a land measure of similar size. Its legal definition was forty standard paces in length and breadth, but the real area differed from province to province, from just over 900 square meters in Ottoman Palestine to about 2,500 in Ottoman Iraq. Roughly it matched the land an ox team could plough in a day.

Today the metric dunam is standardised at exactly 1,000 square meters, a tenth of a hectare, and that is the figure used here. It is the working unit in Israel, Palestine, Syria, Iraq and Turkey, and the Balkan dunam is mostly the same, with local exceptions such as about 1,600 square meters around Leskovac in Serbia. Under the British Mandate the dunam was 919.3 square meters until the metric version was adopted in 1928. Cyprus lists its donum at 1,338 square meters, and the old Ottoman stremma in Greece is given as about 1,270.

1 dunam = 1,000 square meters (exactly).

Sources: Wikipedia: Dunam

Square Mile (mi²)

US & ImperialCurrent unit

640 acres or about 2.59 km². Used for the area of cities, states and countries in the US and UK.

A thousand Roman paces, mille passus, became the mile, and under Elizabeth I Parliament fixed the statute mile at eight furlongs, or 5,280 feet, in place of the older Roman-based value. The square mile inherits that length. Its most famous use came in the United States: the Land Ordinance of 1785 started the Public Land Survey System so that western land could be surveyed and sold to pay war debts, beginning with the Seven Ranges in eastern Ohio.

In that system a section is roughly one square mile, or 640 acres, and a township is 36 sections in a square six miles on a side. One square mile is nearly 2.59 million square meters. Chicago's Midway International Airport, at about 650 acres, covers roughly 1.02 square miles. Beware the phrase mile square: a region 20 miles square has 400 square miles, but so does a rectangle 10 by 40 miles. The US survey version of the mile was retired from 1 January 2023, but the international square mile remains the unit for cities, states and countries in the US and UK.

1 square mile = 2,589,988.11 square meters (approximately).

Sources: Wikipedia: Square mile; Wikipedia: Public Land Survey System; Wikipedia: Mile

Related conversions

See all area units.