Does it convert m² and ft²?

Yes — we show both square meters and square feet automatically.

Why a waste percentage?

It adds a margin for cutting and breakage when buying materials.

Yes — enter the number of identical sections to sum them.

It assumes a rectangle; split complex shapes into rectangles.

Calculate room, land, or surface area in square meters or feet with optional waste.

Quick utilityFully localized assumptionsGlobal-readyInteractive chart

Last updated: 2026-06-03

This calculator uses generic assumptions. Use advanced mode to override them for a more accurate result.

Source: default

area = length × width · total = area × sections · adjusted = total × (1+waste)

Does it convert m² and ft²?: Yes — we show both square meters and square feet automatically.
Why a waste percentage?: It adds a margin for cutting and breakage when buying materials.
Multiple rooms?: Yes — enter the number of identical sections to sum them.
Irregular shapes?: It assumes a rectangle; split complex shapes into rectangles.
Is data stored?: No — fully local.

Results are estimates and not professional advice. Verify important decisions with a qualified professional.