Spike's Calculators

Calculate the area and perimeter of a pentagon.

This calculator uses metres for measurements.

Pentagon = five equal length sides

- the length of a side in metres
- decimal precision, the number of digits after the decimal point

- the height in metres
- the diagonal length in metres
- the area of the pentagon in square metres
- area in square feet
- the area in square inches
- the perimeter of the pentagon in metres
- the perimeter in feet
- the perimeter in inches

A = s²1.7204774005889669227590119773886 P = s5 where A is the area of the pentagon s the length of one of the sides P the perimeter of the pentagon

one metre (m) = 3.28083989501312 feet (ft) one metre (m) = 39.3700787401575 inches (in) one square metre (m²) = 10.7639104167097 square feet (ft²) one square metre (m²) = 1550.0031000062 square inches (in²)