Use our map tool to calculate the area and perimeter of any surface. You
can add multiple areas. You can use it to calculate the size of your
backyard or the size of Texas.
Initial Conversion
The calculator starts by converting the dimensions you provide into a
standard unit of measurement. In this case, it converts the dimensions
into square feet and the perimeter into feet.
Square Feet = Your Input
Perimeter in Feet = Your Input
Conversion to Square Meters
The calculator then converts the area from square feet to square meters.
This is done using the conversion factor of 0.092903.
Square Meters = Square Feet * 0.092903
Calculation of Acres and Hectares
The calculator then uses the square meters to calculate the area in
acres and hectares.
Acres = Square Meters * 0.000247105
Hectares = Square Meters * 0.0001
Conversion to Square Miles and Square Kilometers
The calculator also converts the area from square feet to square miles
and square kilometers.
Square Miles = Square Feet * 0.00000003587
Square Kilometers = Square Feet * 0.000000092903
Perimeter Conversion
Finally, the calculator converts the perimeter from feet to meters using
the conversion factor of 0.3048.
Perimeter in Meters = Perimeter in Feet * 0.3048
Example
Let's say you have a rectangular plot of land that is 100 feet by 200
feet. The area in square feet would be 20,000 square feet and the
perimeter would be 600 feet.
Square Feet = 100 feet * 200 feet = 20,000 square feet
Perimeter in Feet = 2*(100 feet + 200 feet) = 600 feet
Using the formulas above, the calculator would then convert these values
into the various units of measurement. For example, the area in acres
would be calculated as follows:
Acres = 20,000 square feet * 0.092903 * 0.000247105 = 0.46
acres