How many miles is square miles?

The square mile (abbreviated as sq mi and sometimes as mi2)[1] is an imperial and US unit of measure for area. One square mile is an area equal to the area of a square with sides of length one mile.[2]

Equivalents[edit]

One square mile is equal to:

• 4,014,489,600 square inches[3]
• 27,878,400 square feet
• 3,097,600 square yards
• 2,560 roods
• 640 acres

One square mile is also equivalent to:

• 2,589,988.1103360 square metres
• 258.99881103360 hectares
• 2.5899881103360 square kilometres

Similarly-named units[edit]

Miles square[edit]

Square miles should not be confused with miles square, a square region with each side having a length of the value given. For example, a region which is 20 miles square (20 mi × 20 mi) has an area of 400 sq mi; a rectangle of measuring 10 mi × 40 mi also has an area of 400 sq mi, but is not 20 miles square.

Section[edit]

In the United States Public Land Survey System, "square mile" is an informal synonym for section.

References[edit]

1. ^ Rowlett, Russ (September 1, 2004). "S", How Many? A Dictionary of Units of Measurement. University of North Carolina at Chapel Hill. Retrieved February 22, 2012.
2. ^ Davies, Charles (1872). Mathematical dictionary and cyclopedia of mathematical science. Original from Harvard University: A.S. Barnes and co. p. 582.
3. ^ François Cardarelli (2003). Encyclopaedia of scientific units, weights, and measures: their SI equivalences and origins. Springer. p. 3. ISBN 978-1-85233-682-0. Retrieved 22 February 2012.

• Formula Conversion, Square miles to numerous area units with algebraic steps and unit cancellation shown

2 Answers By Expert Tutors

If there are 706,700 square miles, there are 706,700 miles in one direction say east - west and 706,700 miles in the north-south direction. Thus 706,7002.  Multiply 706,700 by itself to arrive at your answer, 499,424,890,000 miles.

Philip P. answered • 07/11/17

Effective and Patient Math Tutor

Your question doesn't make sense.  Square miles is a measure of area, while miles is a measure of length.  I can make 706,700 square miles many different ways.  Here are a few:

• A rectangle that is 70,670 miles long by 10 miles wide  (area = L*W = 70,670*10 = 706,700)
• A rectangle that is 7067 miles long by 100 miles wide (area = L*W = 7067*100 = 706,700)
• A triangle with a base of 14134 miles and a height of 100 miles (area = (1/2)*base*height)
• A square that is 840.65 miles by 840.65 miles (area = side2 = 840.652 = 706,700)

A square mile (mi2) is a unit of measurement of area. 1 square mile is equal to the area of a square with sides that measure 1 mile:

A square area is a measurement made up of two lengths. Square units of area, such as square miles, are a result of multiplying two lengths. In the case of square miles, each length is measured in miles, so multiplying miles × miles results in miles2. The measured area does not need to be in the shape of a square; any area can be calculated, or estimated, as the area made up by some number of unit squares.

For example, a 4 mi × 2 mi rectangle is made up of 8 squares with an area of 1 mi2 each. The rectangle therefore has an area of 8 mi2:

Systems of measurement

In the US customary system of units, square inches, square feet, square yards, square miles, and acres are some of the primary measurements of area. Square inches, feet, and yards are used for small to medium measurements of area, while square miles and acres are used for larger areas. For example, the area of Yosemite National Park may be reported using square miles (1169.432 mi2) or acres (748,436 acres).

The standard unit of area in the International System of Units (SI) is the square meter (or metre). SI makes use of prefixes that denote the specific power of 10 that modifies a base unit (in this case the meter). For example the "kilo-" prefix indicates 103, so 1,000 meters is equal to 1 kilometer, making 1,000,000 m2 = 1 km2. Converting between SI units is relatively straightforward because units are related by powers of 10.

Outside of the US, certain US customary units such as square feet may still be used, but for the most part, area is measured in square meters. As such, it is important to be able to convert between US customary and SI units of area since most countries around the world use SI, US customary units, or a mixture of SI and imperial (similar to US customary system) units of measurement.

Below are the relationships between square miles and some other measurements of area.

1 square mile = 27,878,400 square feet

1 square mile = 640 acres

1 square mile = 2,589,988.110 square meters

Note that these conversions are rounded to 3 decimal places, so they are not exact.

Examples

Convert the following areas between square miles, acres, and square kilometers.

1. 349 mi2:

349 × 2.59 = 903.91 km2

349 × 640 = 223,360 acres

2. 1111 km2:

1111 ÷ 2.59 = 428.958 mi2

1111 × 247.105 = 274,533.655 acres