Rectangle Calculator

Rectangle Calculator

Side 1
Side 2


Rectangle is a two dimensional (2D) geometric shape. A rectangle is a four-sided flat shape where every angle is a right angle. The two opposite sides are equal in length and the two adjacent sides are unequal.

  • Square: This is a rectangle when the adjacent sides are also equal ie all the sides are equal.
  • Parallelogram: this is a rectangle with the difference being that the internal angles are not right angles. Opposite angles are equal.



Areaof a Cone is claculated by the formula: Long Side * Short Side

PerimeterThis is calculated by the formula: 2 * (Long Side + Short Side)

DiagonalDiagonals of a rectangle are equal in length and is calculated by the formula: √(Long Side² + Short Side²)

Measurement Units

Meter (m)is the base unit of length in the International System of Units (SI). Metre is defined as the distance travelled by light in a specific fraction (1299 792 458) of a second.

Other SI units: are millimeter (mm) ie 1/1000 of m, centimeter (cm) which is 1/100 of m and kilometer (km) which is equal to 1000m.

Other English units of measure of distance are
Mile: An English unit of length, it is equal to 1609 meters (m).
Yard: It is equal to 0.9144 meters (m).
Foot: It is equal to 0.3048 meters (m).