Orders of magnitude (length)

This is a list of orders of magnitude for length. Other lists for time, area, volume, mass and dimensionless numbers are also available, and an overview is at order of magnitude.

• 10^-35 m
  • Lengths smaller than this do not make any physical sense. See Planck length
• [...]
• 10^-18 m = 1 attometre (am)
• 10^-15 m = 1 femtometre (fm)
  • Size of atomic nucleus
• 10^-14 m
• 10^-13 m
• 10^-12 m = 1 picometre (pm)
• 10^-11 m
• 10^-10 m = 1 Ångström
  • Size of smallest atoms
• 10^-9 m = 1 nanometre (nm)
  • Diameter of DNA helix
• 10^-8 m = 10 nm
  • 20 nm -- thickness of bacterial flagellum
  • 90 nm -- Human immunodeficiency virus (HIV)
• 10^-7 m = 100 nm
  • 100 nm -- Maximum particle size that can fit through a surgical mask
  • wavelengths of visible light
• 10^-6 m = 1 micrometre aka micron (μm)
  • diameter of typical bacterium
  • diameter of typical cell nucleus
  • 6 μm -- anthrax spore
  • 7 μm -- strand of spider web
• 10^-5 m = 10 μm
  • 10 μm -- Width of cotton fibre
  • 80 μm -- width of human hair
• 10^-4 m = 100 μm
  • 125 μm -- Dust mite
• 10^-3 m = 1 millimetre (mm)
  • 2.54 mm -- distance between pins in old DIP (dual-inline-pins) electronic components
• 10^-2 m = 1 centimetre (cm)
  • 1.5 cm -- length of a large mosquito.
  • 2.54 cm -- 1 inch
• 10^-1 m = 10 cm
  • 30 cm -- 1 foot
  • 91 cm -- 1 yard
• 1 m
  • 1.7 m -- average person's height
  • 5.5 m -- height of tallest animal, the giraffe
• 10 m
  • 20 m -- Length of a cricket pitch
  • 52 m -- Height of Niagara Falls
• 100 m
  • 147 m -- Original height of the Great Pyramid of Giza
  • 300 m -- Height of the Eiffel tower
  • 448 m -- Height of the Empire State building
  • 647 m -- Height of the Warszawa Radio Mast, tallest man-made structure, collapsed in 1991
• 1 000 m = 1 kilometre (km)
  • 1609 m = 1 international mile
  • 1805 m = 1 nautical mile
  • 8850 m -- Height highest mountain, Mount Everest
• 10 000 m = 10 km
  • 11,518 m -- Mindanao deep
  • 35 km -- Width of the English Channel
• 100 000 m = 100 km
• 10⁶ m = 1 000 km
  • 3 480 km -- Diameter of the Moon
  • 6 400 km -- The length of the Great Wall of China
• 10⁷ m = 10 000 km
  • 12 756 km = Diameter of the Earth
  • 40 000 km = Circumference of the Earth
• 10⁸ m = 100 000 km
  • 384 000 km -- Moon's orbital distance from Earth
• 10⁹ m = 1 million km
  • 1 390 000 km -- Diameter of Sun
• 10¹⁰ m = 10 million km
• 10¹¹ m = 100 million km
  • 150 million km -- 1 astronomical unit (au); Mean distance between Earth and Sun.
• 10¹² m = 1 billion km
  • 1.4 billion km -- Orbital distance of Saturn from Sun
  • 6 billion km -- Orbital distance of Pluto from Sun
• 10¹³ m = 10 billion km
• 10¹⁴ m = 100 billion km
• 10¹⁵ m = 1 trillion km
  • 9.5 trillion km = 1 light year -- distance travelled by light in one year
• 10¹⁶ m
  • 3.26 light years -- 1 parsec
  • 4.2 light years -- Distance to nearest star (Proxima Centauri)
• 10¹⁷ m
• 10¹⁸ m
• 10¹⁹ m
• 10²⁰ m
  • 100 000 light years -- diameter of galactic disk of Milky Way Galaxy
• 10²¹ m
  • 2.3 million light years -- Distance to Andromeda Galaxy
• 10²² m
• 10²³ m
• 10²⁴ m
• 10²⁵ m
• 10²⁶ m
  • 10 billion light years -- Estimated distance to Quasars - the farthest observed objects in the Universe

See also: SI, SI prefixes, SI base units, units, length, orders of magnitude