Metric-based units not part of the International System of Units.
Ares AreaUnit (100 square meters).
Centiares AreaUnit (1 square meter).
Decares AreaUnit (1000 square meters).
Deciares AreaUnit (10 square meters).
Gradians RotationUnit (400 gradians = 360 degrees).
Hectares AreaUnit (10000 square meters).