About this calculator
Calculate room floor area in square metres and square feet.
For L-shaped rooms, split into rectangles and add their areas.
Formula
Area = length × width. Square feet = square metres × 10.7639.
Example
4m × 3m = 12m² ≈ 129.17ft².
Accuracy
NUMTX shows the assumptions next to the calculation so you can replace defaults with values that match your situation. For measurements, supplier rates, fees, interest, tax or regulated work, confirm important figures with the appropriate official or professional source.