Rectangular, L-shaped or circular rooms — exact area, plus how many flooring boxes you'll need with a waste allowance built in.
The simplest way to measure an L-shape is as a full rectangle minus the missing corner: measure the room as if it were a complete rectangle (main length × main width), then subtract the area of the cut-out corner (its own length × width). This calculator does exactly that.
Flooring box coverage isn't standardised — laminate boxes typically cover 1.8-2.5 m², vinyl plank boxes vary similarly, and tile boxes depend entirely on tile size. Always check the specific coverage printed on your chosen product's packaging and adjust the field above rather than trusting a generic default for anything beyond a rough first estimate.
An L-shaped room measured as a 5m × 4m rectangle with a 2m × 1.5m corner missing: total area is 17 m². With a 10% waste allowance (18.7 m²) and boxes covering 2.2 m² each, you'd need 9 boxes.