Orders of magnitude (length) in E notation
0 m 1 E-24 m 1 E-23 m 1 E-22 m 1 E-21 m 1 E-20 m 1 E-19 m 1 E-18 m 1 E-17 m 1 E-16 m 1 E-15 m 1 E-14 m 1 E-13 m 1 E-12 m 1 E-11 m 1 E-10 m 1 E-9 m 1 E-8 m 1 E-7 m 1 E-6 m 1 E-5 m 1 E-4 m 1 E-3 m 1 E-2 m 1 E-1 m 1 E0 m	1 E+1 m 1 E+2 m 1 E+3 m 1 E+4 m 1 E+5 m 1 E+6 m 1 E+7 m 1 E+8 m 1 E+9 m 1 E+10 m 1 E+11 m 1 E+12 m 1 E+13 m 1 E+14 m 1 E+15 m 1 E+16 m 1 E+17 m 1 E+18 m 1 E+19 m 1 E+20 m 1 E+21 m 1 E+22 m 1 E+23 m 1 E+24 m 1 E+25 m 1 E+26 m

To help compare orders of magnitude; this page lists lengths between 100 and 1,000 km (10⁵ and 10⁶ m).

Distances shorter than 100 km

Conversions

100 km is equal to:

• 62 miles
• side of square with area 10,000 km²
• radius of circle with area 31,415.92653589793238462643383279502884 km²

Human-built structures

• 108 km — length of High Speed 1 between London and the Channel Tunnel
• 130 km — range of a Scud-A missile
• 213 km — length of Paris Métro
• 217 km — length of the Grand Union Canal
• 223 km — length of the Madrid Metro
• 300 km — range of a Scud-B missile
• 386 km — altitude of the International Space Station
• 408 km — length of the London Underground (active track)
• 470 km — distance from Dublin to London as the crow flies
• 500 km — widest width of Sweden from east to west
• 550 km — distance from San Francisco to Los Angeles as the crow flies
• 590 km — length of land boundary between Finland and Sweden
• 600 km — range of a Scud-C missile
• 600 km — height above ground of the Hubble Space Telescope
• 871 km — distance from Sydney to Melbourne (along the Hume Highway)

Nature

• 203 km — length of Sognefjorden, the second largest fjord in the world
• 240 km — widest width of the English Channel
• 430 km — length of the Pyrenees
• 724 km — length of the Om River

Astronomical

• 100 km — the altitude at which the FAI defines spaceflight to begin
• 167 km — diameter of Amalthea, one of Jupiter's inner moons
• 220 km — diameter of Phoebe, the largest of Saturn's outer moons
• 340 km — diameter of Nereid, the third largest moon of Neptune
• 350 km — lower bound of Low Earth orbit
• 420 km — diameter of Proteus, the second largest moon of Neptune
• 468 km — diameter of the asteroid 4 Vesta
• 472 km — diameter of Miranda, one of Uranus' major moons

Distances longer than 1,000 km

See also

• Orders of magnitude (length)