Carpet Calculator

A carpet calculator determines how much carpet is needed for a room, including an allowance for wastage from cuts and seams. Carpet is typically sold by the linear metre in widths of 3m, 3

The calculator uses the standard published formula for carpet. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, percentages, watts. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Calculate room area = Length × Width. Each step in the calculation is shown so you can verify the result manually.