Length of a Rectangle Calculator

Your details

Pick the two values you already know. The calculator solves for length, width (when needed), and any other missing dimension.
The surface area of the rectangle.
m²
The shorter side of the rectangle (width).
m
Length
6

The longer (or equal) side of the rectangle

Width4
Area24
Perimeter20
Diagonal7.2111
_unitLabelm

Length = 6.0000 m

  • The rectangle measures 6.0000 m (length) by 4.0000 m (width).
  • Area is 24.0000 m², perimeter is 20.0000 m, and the diagonal is 7.2111 m.
  • The length-to-width ratio is 1.50:1. The golden ratio is approximately 1.618:1 for comparison.

Next stepUse the length and width to calculate paint coverage, flooring area, or fencing needed by multiplying or adding the sides as required.

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