Square meter (m²)
Definition
The SI unit of area, a square one meter on each side.
History
The square meter is the SI unit of area, simply a square one meter on each side. It came with the meter in the metric system of the 1790s.
Where it is used
Square meters measure floor area and the size of rooms and apartments across the metric world.
Typical uses include floor area, room and apartment sizes.
Conversion pages
These pages convert square meter to or from another unit in area.
Other Area units
Sources
- BIPM SI BIPM SI Brochure (2019) · Dataset reviewed Nov 11, 2026