Square meter (m²)
Definition: The square meter (symbol: m²) is the SI unit of area. It is defined as the area of a square whose sides each measure exactly one meter.
History/origin: The square meter derives directly from the meter, which was established during the French Revolution as part of the metric system. It became the standard metric area unit for land, property, and engineering.
Current use: Square meters are used worldwide for room size, floor area, land parcels, retail spaces, and construction planning in countries that use the metric system.
