Area Unit Conversion Calculators

Calculators can be used to convert measurements from one unit to another
To convert a unit of area to another, metric or imperial, choose a unit to convert from.

What is Area

Area measurements indicate the total size of a 2 dimensional shape. Put another way, area is the amount of space within the boundaries of 2 dimensional shapes, such as a rectangle or square. When finding area, it is crucial to use the same unit of measure for all measurements. Area measurements are commonly used for construction material estimates and to identify property sizes. Find out more area formulas at Coolmath.com

Common Area Formulas

Area is commonly found by multiplying the length of a space by the width of a space. That assumes that the space is square or rectangular. Calculating the area of a border involves subtracting the area of the inner space from the area of the outer space to find the remaining area of the border. Finding the area of a circle or triangle requires a different formula altogether. Check out the formulas below to find out how to calculate the area of a shape. Check out our square footage calculator to find the square footage of an area.


Area of a square can be found by multiplying length times width

Square

area = length x width

rectangle

Rectangle

area = length x width

Area of a border can be found by subtracting the inner area from the outer area

Rectangular Border

outside area = length x width inside area = (length - (2 x border)) x (width - (2 x border)) border area = outside area - inside area

Find the area of a circle

Circle

area = pi x (diameter / 2)2 pi = 3.14159265359

Find the area of a triangle

Triangle

area = (1/4) x
(a+b+c) x (b+c-a) x (c+a-b) x (a+b-c)

Units of Area Measurement

Units of area include square miles, acres, square yards, square feet, square inches, square kilometers, hectares, ares, square meters, square centimeters, and square millimeters.

Common Area Measurement Conversions

Square Feet to square yards area conversion
1 square foot is equal to 0.111111 square yards
Square Yards to square feet area conversion
1 square yard is equal to 9 square feet
Square Feet to square meters area conversion
1 square foot is equal to 0.092903 square meters
Square Meters to square feet area conversion
1 square meter is equal to 10.76391 square feet
Square Kilometers to square miles area conversion
1 square kilometer is equal to 0.386102 square miles
Square Miles to square kilometers area conversion
1 square mile is equal to 2.589988 square kilometers
Square Centimeters to square inches area conversion
1 square centimeter is equal to 0.155 square inches

Area Unit Conversion Table

Equivalent area metric and imperial measurements
Convert From Square Mile Acre Square Yard Square Foot Square Inch Square Kilometer Hectare Are Square Meter Square Centimeter Square Millimeter
1 square mile = 1 sq mi 640.004929 ac 3,097,600 sq yd 27,878,400 sq ft 4,014,489,599 sq in 2.589988 sq km 258.998811 ha 25,900 a 2,589,988 sq m 25,899,881,100 sq cm 2,589,988,110,000 sq mm
1 acre = 0.001562 sq mi 1 ac 4,840 sq yd 43,560 sq ft 6,272,592 sq in 0.004047 sq km 0.404683 ha 40.468253 a 4,047 sq m 40,468,253 sq cm 4,046,825,252 sq mm
1 square yard = 0.00000032283 sq mi 0.000207 ac 1 sq yd 9 sq ft 1,296 sq in 0.00000083613 sq km 0.000083613 ha 0.008361 a 0.836127 sq m 8,361 sq cm 836,127 sq mm
1 square foot = 0.00000003587 sq mi 0.000022957 ac 0.111111 sq yd 1 sq ft 144 sq in 0.000000092903 sq km 0.0000092903 ha 0.000929 a 0.092903 sq m 929.0304 sq cm 92,903 sq mm
1 square inch = 0.0000000002491 sq mi 0.00000015942 ac 0.000772 sq yd 0.006944 sq ft 1 sq in 0.00000000064516 sq km 0.000000064516 ha 0.0000064516 a 0.000645 sq m 6.4516 sq cm 645.16 sq mm
1 square kilometer = 0.386102 sq mi 247.107285 ac 1,195,990 sq yd 10,763,910 sq ft 1,550,003,100 sq in 1 sq km 100 ha 10,000 a 1,000,000 sq m 10,000,000,000 sq cm 1,000,000,000,000 sq mm
1 hectare = 0.003861 sq mi 2.471073 ac 11,960 sq yd 107,639 sq ft 15,500,031 sq in 0.01 sq km 1 ha 100 a 10,000 sq m 100,000,000 sq cm 10,000,000,000 sq mm
1 are = 0.00003861 sq mi 0.024711 ac 119.599005 sq yd 1,076 sq ft 155,000 sq in 0.0001 sq km 0.01 ha 1 a 100 sq m 1,000,000 sq cm 100,000,000 sq mm
1 square meter = 0.0000003861 sq mi 0.000247 ac 1.19599 sq yd 10.76391 sq ft 1,550 sq in 0.0000010 sq km 0.0001 ha 0.01 a 1 sq m 10,000 sq cm 1,000,000 sq mm
1 square centimeter = 0.00000000003861 sq mi 0.000000024711 ac 0.00012 sq yd 0.001076 sq ft 0.155 sq in 0.00000000010 sq km 0.000000010 ha 0.0000010 a 0.0001 sq m 1 sq cm 100 sq mm
1 square millimeter = 0.0000000000003861 sq mi 0.00000000024711 ac 0.000001196 sq yd 0.000010764 sq ft 0.00155 sq in 0.0000000000010 sq km 0.00000000010 ha 0.000000010 a 0.0000010 sq m 0.01 sq cm 1 sq mm