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A 'hectometre' (American spelling: 'hectometer', symbol 'hm') is a somewhat uncommonly used unit of length in the metric system, equal to one hundred metres, the current SI base unit of length. It can be written in scientific notation as 1 E+2 m (exponential notation) — meaning 100 × 1 m.
nanometre <<< micrometre <<< millimetre < centimetre < decimetre < metre < decametre < hectometre < kilometre

★ For surface the 'square hectometre' ('hm²') is a common unit, be it by the name hectare ('ha'), meaning 100 are ('100 a'). The are is a measurement of area the size of 1 decametre by 1 decametre, 10 metres by 10 metres. Hence 100 are equals an area with dimensions 100 m by 100 m — 1 hectometre by 1 hectometre, the square hectometre — equalling 10,000 square metres ('10,000 m²').

★ For volumes the 'cubic hectometre' ('hm³') is also used, 100 m by 100 m by 100 m equalling 1,000,000 cubic metres ('1,000,000 m³').

Contents

See also

See also

★ SI

★ SI prefix

★ hecto-

★ Metric System

★ For length: 1 E+2 m and Orders of magnitude (length)

★ For surface: 1 E+4 m² and Orders of magnitude (area)

★ For volume: 1 E+6 m³ and Orders of magnitude (volume)

★ Conversion of units, for comparison with other units