1 hectometre

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Click on the thumbnail image to jump to the desired Human-scale order of length magnitude article: top-left is 1E-6 m, lower-right is 1E5 m.

The Pyramid of Cheops is 138.8 metres high.

British driver location sign and location marker post on the M27 in Hampshire. The location marker posts are installed at 100-metre intervals^[1]

To compare different orders of magnitude this page lists lengths between 100 metres and 1000 metres (1 kilometre).

Conversions

100 metres (sometimes termed a hectometre) is equal to:

100 metres — wavelength of the highest mediumwave radio frequency, 3 MHz
100 metres — Spacing of location marker posts on British motorways.
138.8 metres — height of the Great Pyramid of Giza (Pyramid of Cheops)
139 metres — height of the world's tallest roller coaster, Kingda Ka^[2]
187 metres— shortest wavelength of the broadcast radio AM band, 1600 kHz
202 metres — length of the Széchenyi Chain Bridge connecting Buda and Pest
320.75 metres — height of the Eiffel Tower(including antenna) ^[3]
328 metres — height of Auckland's Sky Tower, the tallest free-standing structure in the Southern Hemisphere
341 metres — height of the world's tallest bridge, the Millau Viaduct
390 metres — height of the Empire State Building
400–800 metres — approximate heights of the world's tallest skyscrapers of the past 80 years.
458 metres — length of the Knock Nevis, the world's largest supertanker
555 metres — longest wavelength of the broadcast radio AM band, 540 kHz
630 metres — height of the KVLY-TV mast, second tallest structure in the world.
646 metres — height of the Warsaw radio mast, the world's tallest structure until its collapse in 1991.
828 metres — height of Burj Khalifa, world's tallest structure on 17 January 2009^[4]
1000 metres — wavelength of the lowest mediumwave radio frequency, 300 kHz

100 metres — the distance a very fast human being can run in about 10 seconds
100.584 metres — length of a Canadian football field between the goal lines (110 yards)
91.5 metres – 137 metres — length of a soccer field^[5]
105 metres — length of a typical football field
109.73 metres — total length of an American football field (120 yards, including the end zones)
110 – 150 metres the width of an Australian football field
135 – 185 metres the length of an Australian football field
137.16 metres — total length of a Canadian football field, including the end zones (150 yards)

115.5 metres — height of the world's tallest tree in 2007, the Hyperion sequoia^[6]
310 metres — maximum depth of Lake Geneva
340 metres — distance sound travels in air at sea level in one second; see speed of sound
979 metres — height of the Salto Angel, the world's highest free-falling waterfall (Venezuela)

270 metres — length of 99942 Apophis
535 metres — length of 25143 Itokawa,^[7] a small asteroid visited by a spacecraft|

↑ Highways Agency. "Driver Location Signs - Frequently Asked Questions". Retrieved 2010-02-10.
↑ "Kingda Ka (Six Flags Great Adventure)". Archived from the original on 25 April 2009. Retrieved 2009-04-18.
↑ "Tour Eiffel". Retrieved 15 September 2010.
↑ "Burj Dubai all set for 09/09/09 soft opening". Emirates Business 24-7. Archived from the original on 19 January 2009. Retrieved 17 January 2009.
↑ The Laws of The Game
↑ http://www.monumentaltrees.com/en/trees/coastredwood/coastredwood/
↑ Fujiwara, Akira; et al (2 June 2006). "The Rubble-Pile Asteroid Itokawa as Observed by Hayabusa". Science 312 (5778): 1330–1334. doi:10.1126/science.1125841. PMID 16741107. Archived from the original on 2 April 2009. Retrieved 2009-04-20.

v t e Orders of magnitude for length in E notation
shorter than one metre:
<−12	−12	−11	−10	−9	−8	−7	−6	−5	−4	−3	−2	−1	0
longer than 1 metre:
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26

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