basic

Carpet & Floor Square Metre Calculator

Flooring needed = L × W × rooms + waste allowance.

Calculates carpet or flooring area needed for multiple rooms including a user-defined waste percentage, and estimated total cost.

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Area_net = L × W; Area_order = Area_net × (1 + waste%/100)

In depth

Calculates carpet or flooring area needed for multiple rooms including a user-defined waste percentage, and estimated total cost.