Convert square miles to acres

Explanation

From this page you can convert square miles to acres (or sq mi to ac) simply, by using the application above.

In case you are wondering, to convert from square miles to acres you need to multiply by 640. This factor is calculated using the respective definitions of the two units you can find below.

Formula

1 sq mi=640 ac

square milessq mi

dimension	area
symbol	sq mi, mi²
search alias	mi2, sqmi

The square mile (sq mi, mi²) is a derived unit of area in the international mass and length units.

Definition of the square mile

One square mile is the superficial area equivalent to that of a square each side of which measures one mile.

Value

One square mile is equal to 640 imperial acres.

From the Weights and Measures Act of 1985: PART VI: Measurement of area

Value in terms of the SI

One square mile is equivalent to 2.589988110336 square kilometers.

Equivalences

One square mile is also equivalent to:

Some Facts

The mean home range of an adult snow leopard in the Gobi desert can go up to 100 square miles (259 square kilometers) for a male and 64 square miles (166 square kilometers) for a female.
The Manhattan borough is the smallest of the five boroughs of New York City with a land area of 22.7 square miles (59 square kilometers).

International area units

square inch	sq in
square foot	sq ft	144 square inches
square yard	sq yd	9 square feet
square mile	sq mi	3 097 600 square yards

The International Mass and Length Units

The International Mass and Length Units are units based on the international yard and the international pound.

They were created in 1959 when Australia, Canada, New Zealand, South Africa, the United Kingdom and the United States of America agreed upon a common definition of the yard and the pound.

acresac

dimension	area
symbol	ac

The acre (ac) is a unit of area.

Definition of the acre

One acre is equal to 4840 square yards.

From the Weights and Measures Act of 1985: PART VI: Measurement of area

Value in terms of the SI

One acre is equivalent to 4046.8564224 square meters.

Equivalences

One acre is also equivalent to:

Some Facts

The unit is mostly used in the United States to measure tracts of land. The metric unit for the same usage is the hectare (though not technically an SI unit, it is accepted for use alongside the SI).