To help compare different orders of magnitude An order of magnitude is the class of scale or magnitude of any amount, where each class contains values of a fixed ratio to the class preceding it. In its most common usage, the amount being scaled is 10 and the scale is the exponent being applied to this amount. Such differences in order of magnitude can be measured on the logarithmic scale in & this page lists lengths In certain contexts, the term "length" is reserved for a certain dimension of an object along which the length is measured. For example it is possible to cut a length of a wire which is shorter than wire thickness. Another example is FET transistors, in which the channel width may be larger than channel length starting at 106 m The metre , symbol m, is the base unit of length in the International System of Units (SI). Originally intended to be one ten-millionth of the distance from the Earth's equator to the North Pole, its definition has been periodically refined to reflect growing knowledge of metrology. Since 1983, it is defined as the distance travelled by light in (1 Mm A megametre is a unit of length in the metric system, equal to one million metres, the SI base unit of length, hence to 1,000 km or approximately 621.37 miles or 1,000 km The kilometre , symbol km is a unit of length in the metric system, equal to one thousand metres and is therefore exactly equal to the distance travelled by light in free space in 1⁄ 299,792.458 of a second. It is the conventionally used measurement unit for expressing distances between geographical places in most of the world; notable).
Distances shorter than 106 metres
Contents |
Conversions
1 megametre is equal to:
- 1 E+6 m (one million metres)
- approximately 621.37 miles A mile is a unit of length in a number of different systems. In contemporary English, a mile most commonly refers to the statute mile of 5,280 feet , the survey mile of 5,280 survey feet (1,609.3472 metres (5,280.01 ft)) or the nautical mile of 1,852 metres (6,076.12 ft). It is about a third of the old measurement, the league
- Side of square In geometry, a square is a regular quadrilateral. This means that it has four equal sides and four equal angles . A square with vertices ABCD would be denoted ABCD with area 1,000,000 km2
Human-defined scales and structures
- 2.100 Mm — Length of proposed gas pipeline from Iran to India via Pakistan
- 2.288 Mm — Length of the official Alaska Highway The Alaska Highway was constructed during World War II and connects the contiguous U.S. to Alaska through Canada. It runs from Dawson Creek, British Columbia to Delta Junction, Alaska, via Whitehorse, Yukon. Completed in 1942, it was 2,237 km or 1,390 mi long, but is becoming shorter due to rerouting. The historic end of the highway is near when it was built in the 1940s The Second World War took place in the first half of the decade, which had a profound effect on most countries and people in Europe, Asia and elsewhere. The consequences of the war lingered well into the second half of the decade, with a war-weary Europe divided between the jostling spheres of influence of the West and the Soviet Union. To some[1]
- 3.069 Mm — Length of Interstate 95 Interstate 95 is the main highway on the East Coast of the United States, paralleling the Atlantic Ocean from Maine to Florida and serving some of the most populated urban areas in the country, including Boston, New York City, Providence, Philadelphia, Baltimore, Washington, D.C., Jacksonville and Miami. It is one of the north–south routes of (from Houlton, Maine to Miami, Florida Miami is a major city located on the Atlantic coast in southeastern Florida, in the United States. Miami is the county seat of Miami-Dade County, the most populous county in Florida. It is the principal city and the center of the South Florida metropolitan area, which had a 2008 population of 5,414,712; ranking 7th largest in the U.S.. The Miami)
- 3.846 Mm — Length of U.S. Route 1 U.S. Route 1 is a major north–south U.S. Highway that serves the East Coast of the United States. It runs over 2,000 mi from Key West, Florida, north to Fort Kent, Maine, at the Canadian border. U.S. 1 generally parallels Interstate 95, though it is significantly farther west (inland) between Jacksonville, Florida and Petersburg, Virginia. The (from Fort Kent, Maine to Key West, Florida Key West is a city in Monroe County, Florida, United States. The city encompasses the island of Key West, the part of Stock Island north of U.S. 1 (east), Sigsbee Park (north, originally known as Dredgers Key), Fleming Key (north), and Sunset Key (west, originally known as Tank Island). Both Fleming Key and Sigsbee Park are part of Naval Air)
- 5.007 Mm — Estimated length of Interstate 90 Interstate 90 is the longest Interstate Highway in the United States at 3,099.07 miles (4,987 km). It is the northernmost coast-to-coast interstate, and parallels U.S. Route 20 for the most part. Its western terminus is in Seattle, Washington, at 4th Avenue S. next to Safeco Field and Qwest Field, and its eastern terminus is in Boston, (Seattle, Washington to Boston, Massachusetts)
- 5.614 Mm — Length of the Australian Dingo Fence The Dingo Fence or Dog Fence is a pest-exclusion fence that was built in Australia during the 1880s and finished in 1885, to keep dingoes out of the relatively fertile south-east part of the continent and protect the sheep flocks of southern Queensland. It is one of the longest structures in the world and is the world's longest fence. It stretches[2]
- 7.821 Mm — Length of the Trans-Canada Highway The Trans-Canada Highway is a federal-provincial highway system that joins the ten provinces of Canada. It is, along with the Trans-Siberian Highway and Australia's Highway 1, one of the world's longest national highways, with the main route spanning 8,030 km (4,990 mi). The system was approved by the Trans-Canada Highway Act of 1948, construction, the world's longest national highway (from Victoria, British Columbia Victoria is the capital city of British Columbia, Canada, and is located on the southern tip of Vancouver Island about 100 kilometres (62 miles) from BC's largest city of Vancouver on the mainland to St. John's, Newfoundland Coordinates: 47°34′3″N 52°42′26″W / 47.5675°N 52.70722°W St. John's (2006 population 100,646; UA population 151,322; CMA population 181,113) is the provincial capital of Newfoundland and Labrador, Canada and located on the eastern tip of the Avalon Peninsula on the island of Newfoundland. St. John's is the most populous Census)
- 8.852 Mm — Aggregate length of the Great Wall of China The Great Wall stretches from Shanhaiguan in the east to Lop Nur in the west, along an arc that roughly delineates the southern edge of Inner Mongolia. The most comprehensive archaeological survey, using advanced technologies, has recently concluded that the entire Great Wall, with all of its branches, stretches for 8,851.8 km . This is made up of, including trenches, hills and rivers[3]
- 9.259 Mm — Length of the Trans-Siberian railway The Trans-Siberian Railway or Trans-Siberian Railroad is a network of railways connecting Moscow and European Russia with the Russian Far East provinces, Mongolia, China and the Sea of Japan. It is the longest railway in the world. Today, the railway is part of the Eurasian Land Bridge[4]
Sports
- 1.200 Mm — the length of the Paris–Brest–Paris bicycling event
- Several endurance auto races are, or were, run for 1,000 km:
Nature
- 2.000 Mm — Distance from Beijing Beijing , also known as Peking (pronounced /piːˈkɪŋ/ or /peɪˈkɪŋ/), is a metropolis in northern China, and the capital of the People's Republic of China. Governed as a municipality under direct administration of the central government, Beijing borders Hebei Province to the north, west, south, and for a small section in the east, and to Hong Kong Hong Kong[note 3] is one of two special administrative regions (SAR) of the People's Republic of China; the other is Macau. Situated on China's south coast and enclosed by the Pearl River Delta and South China Sea, it is renowned for its expansive skyline and deep natural harbour. With a land mass of 1,104 km2 (426 sq mi) and a population of seven as the crow flies An example is a measure of the distance between Key West and Pensacola, at the two opposite ends of the U.S. state Florida where the most direct route by road is approximately 792 mi and the direct point-to-point aerial path that might be taken by a crow is 524 mi (843 km)
- 2.800 Mm — Narrowest width of Atlantic Ocean The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about 106,400,000 square kilometres , it covers approximately twenty percent of the Earth's surface and about twenty-six percent of its water surface area. The first part of its name refers to the Atlas of Greek mythology, making the Atlantic the " (Brazil-West Africa)
- 2.850 Mm — Length of the Danube The Danube is the longest river in the European Union and Europe's second longest river after the Volga. It is notable for being classified as an international waterway river
- 2.205 Mm — Length of Sweden Sweden is a country in Northern Europe on the Scandinavian Peninsula. Its borders are Norway to the west; Finland to the northeast; and the Baltic Sea and Gulf of Bothnia to the east and south's total land boundaries
- 2.515 Mm — Length of Norway's total land boundaries
- 3.690 Mm — Length of the Volga The Volga is the largest river in Europe in terms of length, discharge, and watershed. It flows through central Russia, and is widely viewed as the national river of Russia. Out of the twenty largest cities of Russia, eleven, including its capital Moscow, are situated in the Volga's drainage basin. Some of the largest reservoirs in the world can river, longest in Europe Europe is one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally divided from Asia to its east by the water divide of the Ural Mountains, the Ural River, the Caspian Sea, the Caucasus region (Specification of borders) and the Black Sea to the southeast. Europe is bordered by the Arctic Ocean and
- 4.350 Mm — Length of the Huang He The Yellow River is called "the cradle of Chinese civilization", as its basin is the birthplace of the northern Chinese civilizations and was the most prosperous region in early Chinese history. But frequent devastating flooding largely due to the elevated river bed in its lower course, has also earned it the unenviable names "China'
- 4.715 Mm — Length of the Nile The Nile is a major north-flowing river in Africa, generally regarded as the longest river in the world
- 4.800 Mm — Widest width of Atlantic Ocean The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about 106,400,000 square kilometres , it covers approximately twenty percent of the Earth's surface and about twenty-six percent of its water surface area. The first part of its name refers to the Atlas of Greek mythology, making the Atlantic the " (U.S.-Northern Africa)
- 5.100 Mm — Distance from Dublin Dublin is the primate and capital city of Ireland. It is officially known in Irish as Baile Átha Cliath [bˠalʲə aːha klʲiəh] or Áth Cliath [aːh cliə(ɸ)]. The English name comes from the Irish Dubh Linn meaning "black pool". It is located near the midpoint of Ireland's east coast, at the mouth of the River Liffey and at the to New York as the crow flies
- 6.270 Mm — Length of the Mississippi The Mississippi River is the largest river system in North America. About 2,320 miles long, the river originates at Lake Itasca, Minnesota and flows slowly southwards in sweeping meanders, terminating 95 river miles below New Orleans, Louisiana where it begins to flow to the Gulf of Mexico. Along with its major tributary, the Missouri River, the-Missouri River The Missouri River is the longest river in the United States of America and is a tributary of the Mississippi River. The Missouri likely originates at Brower's Spring at the upper reaches of the Jefferson River, before joining the confluence of the Madison, Jefferson, and Gallatin rivers in Montana. From this point, it flows through its valley system
- 6.380 Mm — Length of the Yangtze River The name Yangtze River, as well as other similar names such as Yangtse River, Yangzi River and Yangtze Kiang, is derived from Yangzi Jiang (simplified Chinese: 扬
- 6.762 Mm — Length of the Amazon The Amazon River or River Amazon (UK) (Portuguese: Rio Amazonas; Spanish: Río Amazonas; pronounced /ˈæməzɒn/ (US); /ˈæməzən/ (UK)) of South America is the largest river in the world with a total discharge greater than the next ten largest rivers combined. The Amazon, which has the largest drainage basin in the world, about 7,050,000 system, longest on Earth Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets. It is sometimes referred to as the World, the Blue Planet,[note 6] or by its Latin name, Terra.[note 7]
- 8.200 Mm — Distance from Dublin Dublin is the primate and capital city of Ireland. It is officially known in Irish as Baile Átha Cliath [bˠalʲə aːha klʲiəh] or Áth Cliath [aːh cliə(ɸ)]. The English name comes from the Irish Dubh Linn meaning "black pool". It is located near the midpoint of Ireland's east coast, at the mouth of the River Liffey and at the to San Francisco as the crow flies
Astronomical
- 1.000 Mm — Estimated shortest axis of triaxial dwarf planet A dwarf planet, as defined by the International Astronomical Union , is a celestial body orbiting the Sun that is massive enough to be rounded by its own gravity but has not cleared its neighbouring region of planetesimals and is not a satellite. More explicitly, it has to have sufficient mass to overcome its compressive strength and achieve Haumea Haumea, formal designation 136108 Haumea, is a dwarf planet in the Kuiper belt. Its mass is one-third the mass of Pluto.[note 2] It was discovered in 2004 by a team headed by Mike Brown of Caltech at the Palomar Observatory in the United States and, in 2005, by a team headed by J. L. Ortiz at the Sierra Nevada Observatory in Spain, though the
- 1.186 Mm — Diameter of Charon Charon, discovered in 1978 at the United States Naval Observatory Flagstaff Station, is the largest satellite of the dwarf planet Pluto. Following the 2005 discovery of two other natural satellites of Pluto , Charon may also be referred to as Pluto I. The New Horizons mission is scheduled to visit Charon and Pluto in July 2015, the largest moon of Pluto Pluto, formal designation 134340 Pluto, is the second-largest known dwarf planet in the Solar System and the tenth-largest body observed directly orbiting the Sun. Originally classified as a planet, Pluto is now considered the largest member of a distinct population known as the Kuiper belt.[note 9]
- 1.280 Mm — Diameter of the trans-Neptunian object 50000 Quaoar
- 1.436 Mm — Diameter of Iapetus, one of Saturn Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Saturn is named after the Roman god Saturn, equated to the Greek Cronus the Babylonian Ninurta and to the Hindu Shani. Saturn's symbol represents the god's sickle (Unicode: ♄)'s major moons
- 1.578 Mm — Diameter of Titania Titania is the largest of the Moons of Uranus and the eighth largest moon in the Solar System. Discovered by William Herschel in 1787, Titania is named after the queen of the fairies in Shakespeare's A Midsummer Night's Dream. Its orbit lies inside Uranus' magnetosphere, the largest of Uranus Uranus is the seventh planet from the Sun, and the third-largest and fourth most massive planet in the Solar System. It is named after the ancient Greek deity of the sky Uranus the father of Cronus (Saturn) and grandfather of Zeus (Jupiter). Though it is visible to the naked eye like the five classical planets, it was never recognized as a planet' moons
- 1.960 Mm — Estimated longest axis of Haumea Haumea, formal designation 136108 Haumea, is a dwarf planet in the Kuiper belt. Its mass is one-third the mass of Pluto.[note 2] It was discovered in 2004 by a team headed by Mike Brown of Caltech at the Palomar Observatory in the United States and, in 2005, by a team headed by J. L. Ortiz at the Sierra Nevada Observatory in Spain, though the
- 2.320 Mm — Diameter of Pluto Pluto, formal designation 134340 Pluto, is the second-largest known dwarf planet in the Solar System and the tenth-largest body observed directly orbiting the Sun. Originally classified as a planet, Pluto is now considered the largest member of a distinct population known as the Kuiper belt.[note 9]
- 2.400 Mm — Diameter of the dwarf planet Eris Eris, formal designation 136199 Eris, is the largest known dwarf planet in the Solar System and the ninth-largest body known to orbit the Sun directly. It is approximately 2,500 kilometres in diameter and 27% more massive than Pluto, the largest trans-Neptunian object A trans-Neptunian object is any object in the Solar System that orbits the Sun at a greater distance on average than Neptune. The Kuiper belt, scattered disk, and Oort cloud are three divisions of this volume of space found to date
- 2.707 Mm — Diameter of Triton Triton is the largest moon of the planet Neptune, discovered on October 10, 1846 by William Lassell. It is the only large moon in the Solar System with a retrograde orbit, which is an orbit in the opposite direction to its planet's rotation. At 2700 km in diameter, it is the seventh-largest moon in the Solar System. Because of its retrograde orbit, largest moon of Neptune
- 3.122 Mm — Diameter of Europa, the smallest Galilean satellite of Jupiter
- 3.475 Mm — Diameter of Earth's Moon
- 3.643 Mm — Diameter of Io, a moon of Jupiter
- 4.821 Mm — Diameter of Callisto, a moon of Jupiter
- 4.879 Mm — Diameter of Mercury
- 5.150 Mm — Diameter of Titan, the largest moon of Saturn
- 5.262 Mm — Diameter of Jupiter's moon Ganymede, the largest moon in the solar system
- 6.366 Mm — Radius of Earth
- 6.792 Mm — Diameter of Mars
See also
Click on the thumbnail image to jump to the desired order of length magnitude: top-left is 1e6m, lower-right is 1e17m. (Image description)| Orders of magnitude for length in E notation, shorter than one metre: | |||||||||||||||||||||||||
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