Unit of measure of surface that corresponds to the area of a square with 1 metre sides.

The square metre is a unit of measurement that is used to calculate area (the area being the measure of the surface considered).

### Properties

- One square metre is equal to 100 square decimetres and we write: 1 m\(^{2}\) = 100 dm\(^{2}\)
- One square metre is equal to 10 000 square centimetres and we write: 1 m\(^{2}\) = 10 000 cm\(^{2}\)
- One square metre is equal to 1 000 000 square millimetres and we write: 1 m\(^{2}\) = 1 000 000 mm\(^{2}\)

### Notation

The notation for the square metre is « m\(^{2}\) » which signifies “square metre.”