# Weights and Measures Act 1985, Metric units


Hectare =
100 ares.
Decare =
10 ares.
Are =
100 square metres.
SQUARE METRE=
a superficial area equal to that of a square each side of which measures one metre.
Square decimetre =
1/100 square metre.
Square centimetre =
1/100 square decimetre.
Square millimetre =
1/100 square centimetre.

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Source: https://www.legislation.gov.uk/ukpga/1985/72/schedule/1/part/II/crossheading/metric-units (the official version)
Page: https://openlegislation.uk/weights-and-measures-act-1985/schedule-1/part-II/crossheading-metric-units
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.