Hectometer (hm)
100 meters. An official SI unit, rarely used.
1 hectometer = 100 meters (exactly).
About the hectometer
Hecto, the prefix for one hundred, dates to 1795 in Wikipedia's table of metric prefixes, which makes the hectometer (hm) a contemporary of the original French system. It equals 100 meters, one tenth of a kilometer, or about 328 feet. English speakers rarely use it, and the Wikipedia article flags even that claim as lacking a citation.
Its best-known appearance is hidden in another word. The hectare is a square hectometer, 10,000 square meters, so every land listing in hectares quietly rests on this length. A football pitch is about one hectometer long, and the Great Pyramid of Giza, at 137.7 m, stands about 1.377 hm high. Military writers have occasionally given target ranges in hectometers, with Wikipedia citing a 1927 Field Artillery Journal among its examples. The unit sits between the decameter at 10 m and the kilometer at 1,000 m.
Sources: Wikipedia: Hectometre; Wikipedia: Metric prefix; NIST: metric (SI) prefixes
Hectometer conversion chart
1 hectometer expressed in every other length unit:
| Unit | 1 hectometer |
|---|---|
| Meters | 100 |
| Kilometers | 0.1 |
| Centimeters | 10,000 |
| Millimeters | 100,000 |
| Inches | 3,937.007874 |
| Feet | 328.0839895 |
| Yards | 109.3613298 |
| Miles | 0.06213711922 |
| Micrometers | 100,000,000 |
| Nanometers | 100,000,000,000 |
| Nautical Miles | 0.05399568035 |
| Pixels (CSS) | 377,952.7559 |
| Light-years | 1.057000834×10⁻¹⁴ |
| Picometers | 100,000,000,000,000 |
| Femtometers | 1×10¹⁷ |
| Decimeters | 1,000 |
| Decameters | 10 |
| Thou | 3,937,007.874 |
| Points | 283,464.5669 |
| Picas | 23,622.04724 |
| Twips | 5,669,291.339 |
| Astronomical Units | 6.684587122×10⁻¹⁰ |
| Light-seconds | 3.335640952×10⁻⁷ |
| Light-minutes | 5.559401587×10⁻⁹ |
| Light-hours | 9.265669311×10⁻¹¹ |
| Parsecs | 3.240779289×10⁻¹⁵ |
| Megaparsecs | 3.240779289×10⁻²¹ |
| Angstroms | 1,000,000,000,000 |
| Fathoms | 54.68066492 |
| Cable Lengths | 0.5399568035 |
| Leagues | 0.02071237307 |
| Nautical Leagues | 0.01799856012 |
| Furlongs | 0.4970969538 |
| Chains | 4.970969538 |
| Rods | 19.88387815 |
| Links | 497.0969538 |
| Hands | 984.2519685 |
| Barleycorns | 11,811.02362 |
| Palms | 1,312.335958 |
| Spans | 437.4453193 |
| Cubits | 218.7226597 |
| Ells | 87.48906387 |
| US Survey Feet | 328.0833333 |
| US Survey Miles | 0.06213699495 |
| Stadia | 0.5208333333 |
| Roman Inches | 4,065.04065 |
| Roman Feet | 337.8378378 |
| Roman Cubits | 225.2252252 |
| Roman Paces | 67.56756757 |
| Roman Stadia | 0.5405405405 |
| Roman Miles | 0.06756756757 |
| Roman Leagues | 0.04504504505 |
| Greek Feet | 312.5 |
| Royal Cubits | 190.4761905 |
| Egyptian Palms | 1,333.333333 |
| Egyptian Fingers | 5,333.333333 |
| Khet | 1.904761905 |
| Biblical Cubits | 185.1851852 |
| Sabbath Days' Journeys | 0.09259259259 |
| Sun | 3,300 |
| Shaku | 330 |
| Ken | 55 |
| Jō | 33 |
| Chō | 0.9166666667 |
| Ri (Japanese) | 0.02546296296 |
| Fen (Chinese) | 30,000 |
| Cun (Chinese) | 3,000 |
| Chi (Chinese) | 300 |
| Zhang (Chinese) | 30 |
| Li (Chinese) | 0.2 |
| Vershoks | 2,249.718785 |
| Arshins | 140.6074241 |
| Sazhens | 46.86914136 |
| Versts | 0.09373828271 |
| Lignes | 44,329.6 |
| Pouces | 3,694.133333 |
| Pieds Du Roi | 307.8444444 |
| Toises | 51.30740741 |
| Lieues | 0.0256537037 |
| Varas | 119.6315349 |
| Leguas | 0.01794473023 |
| Wa (Thai) | 50 |
| Sen (Thai) | 2.5 |
| Scandinavian Mil | 0.01 |
More Metric (SI) units
- meter (length)
- kilometer (length)
- centimeter (length)
- millimeter (length)
- micrometer (length)
- nanometer (length)
- picometer (length)
- decimeter (length)
- decameter (length)
- kilogram (weight & mass)
- gram (weight & mass)
- milligram (weight & mass)
- microgram (weight & mass)
- metric ton (weight & mass)
- quintal (weight & mass)
- carat (weight & mass)
Browse all length units.