What does hectometer mean?
A hectometer is a metric unit of distance equal to 100 metres. It can describe route lengths, land measurements, or distances in technical and historical writing, although contemporary English usually prefers simply “100 metres,” especially in athletics and other everyday contexts. The word remains precise and internationally understood through the metric system. Its name reflects its scale: the metric prefix hecto- means “hundred,” while metre names the unit of length. A hectometer should not be confused with a hectare, which measures area rather than distance. The term is especially useful when reading older sporting records, surveying reports, or formal descriptions that use prefixed metric measurements. In modern writing, “100 metres” will usually sound more natural to most English speakers, but hectometer is both correct and informative when a distinctly named larger unit is desired.
nounA metric unit of length equal to 100 metres (100 m).
- A metric unit of distance equal to 100 metres.
"The course stretched for three hectometers along the winding riverbank."
"The survey party followed the boundary for approximately eight hectometers."
"The old race report described the event as a 100-hectometer contest."
The plural adds -s, including after numerical expressions.
"The route covers approximately 15 hectometers."
Think “hecto-” for hundred: a hectometer is exactly 100 metres.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does hectometer come from?
Hectometer combines the metric prefix hecto- with the unit metre. The prefix comes from Greek hekaton, meaning “hundred,” while metre derives through French from Greek metron, meaning “measure.” The word belongs to the vocabulary that developed as the metric system spread into European languages during the nineteenth century.
Related word forms
How hectometer is actually used
Hectometer is a correct metric unit, but “100 metres” is generally more natural in contemporary English, particularly in athletics and everyday measurement. The British spelling is “hectometre.”
Easily confused with hectometer
A hectometer measures length or distance, whereas a hectare measures area and equals 10,000 square metres.