Popular length unit conversions

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Free online length converter - converts between 93 units of length, including meter m, kilometer km, decimeter dm, centimeter cm, etc. Also, explore many other unit converters or learn more about length unit conversions. Download alps driver.

Complete list of length units for conversion

• meter [m]
• 1 kilometer [km] = 1000 meter [m]
• 1 decimeter [dm] = 0.1 meter [m]
  decimeter to meter, meter to decimeter
• 1 centimeter [cm] = 0.01 meter [m]
• 1 millimeter [mm] = 0.001 meter [m]
  millimeter to meter, meter to millimeter
• 1 micrometer [µm] = 1.0E-6 meter [m]
• 1 nanometer [nm] = 1.0E-9 meter [m]
  nanometer to meter, meter to nanometer
• 1 mile [mi, mi(Int)] = 1609.344 meter [m]
• 1 yard [yd] = 0.9144 meter [m]
  yard to meter, meter to yard
• 1 foot [ft] = 0.3048 meter [m]
• 1 inch [in] = 0.0254 meter [m]
  inch to meter, meter to inch
• 1 light year [ly] = 9.46073047258E+15 meter [m]
• 1 exameter [Em] = 1.0E+18 meter [m]
  exameter to meter, meter to exameter
• 1 petameter [Pm] = 1.0E+15 meter [m]
• 1 terameter [Tm] = 1000000000000 meter [m]
  terameter to meter, meter to terameter
• 1 gigameter [Gm] = 1000000000 meter [m]
• 1 megameter [Mm] = 1000000 meter [m]
  megameter to meter, meter to megameter
• 1 hectometer [hm] = 100 meter [m]
• 1 dekameter [dam] = 10 meter [m]
  dekameter to meter, meter to dekameter
• 1 micron [µ] = 1.0E-6 meter [m]
• 1 picometer [pm] = 1.0E-12 meter [m]
  picometer to meter, meter to picometer
• 1 femtometer [fm] = 1.0E-15 meter [m]
• 1 attometer [am] = 1.0E-18 meter [m]
  attometer to meter, meter to attometer
• 1 megaparsec [Mpc] = 3.08567758128E+22 meter [m]
• 1 kiloparsec [kpc] = 3.08567758128E+19 meter [m]
  kiloparsec to meter, meter to kiloparsec
• 1 parsec [pc] = 3.08567758128E+16 meter [m]
• 1 astronomical unit [AU, UA] = 149597870691 meter [m]
  astronomical unit to meter, meter to astronomical unit
• 1 league [lea] = 4828.032 meter [m]
• 1 nautical league (UK) = 5559.552 meter [m]
  nautical league (UK) to meter, meter to nautical league (UK)
• 1 nautical league (int.) = 5556 meter [m]
  nautical league (int.) to meter, meter to nautical league (int.)
• 1 league (statute) [st.league] = 4828.0416560833 meter [m]
  league (statute) to meter, meter to league (statute)
• 1 nautical mile (UK) [NM (UK)] = 1853.184 meter [m]
  nautical mile (UK) to meter, meter to nautical mile (UK)
• 1 nautical mile (international) = 1852 meter [m]
  nautical mile (international) to meter, meter to nautical mile (international)
• 1 mile (statute) [mi, mi (US)] = 1609.3472186944 meter [m]
• 1 mile (US survey) [mi] = 1609.3472186944 meter [m]
  mile (US survey) to meter, meter to mile (US survey)
• 1 mile (Roman) = 1479.804 meter [m]
• 1 kiloyard [kyd] = 914.4 meter [m]
  kiloyard to meter, meter to kiloyard
• 1 furlong [fur] = 201.168 meter [m]
• 1 furlong (US survey) [fur] = 201.1684023368 meter [m]
  furlong (US survey) to meter, meter to furlong (US survey)
• 1 chain [ch] = 20.1168 meter [m]
• 1 chain (US survey) [ch] = 20.1168402337 meter [m]
  chain (US survey) to meter, meter to chain (US survey)
• 1 rope = 6.096 meter [m]
• 1 rod [rd] = 5.0292 meter [m]
  rod to meter, meter to rod
• 1 rod (US survey) [rd] = 5.0292100584 meter [m]
  rod (US survey) to meter, meter to rod (US survey)
• 1 perch = 5.0292 meter [m]
• 1 pole = 5.0292 meter [m]
  pole to meter, meter to pole
• 1 fathom [fath] = 1.8288 meter [m]
• 1 fathom (US survey) [fath] = 1.8288036576 meter [m]
  fathom (US survey) to meter, meter to fathom (US survey)
• 1 ell = 1.143 meter [m]
• 1 foot (US survey) [ft] = 0.3048006096 meter [m]
  foot (US survey) to meter, meter to foot (US survey)
• 1 link [li] = 0.201168 meter [m]
• 1 link (US survey) [li] = 0.2011684023 meter [m]
  link (US survey) to meter, meter to link (US survey)
• 1 cubit (UK) = 0.4572 meter [m]
• 1 hand = 0.1016 meter [m]
  hand to meter, meter to hand
• 1 span (cloth) = 0.2286 meter [m]
• 1 finger (cloth) = 0.1143 meter [m]
  finger (cloth) to meter, meter to finger (cloth)
• 1 nail (cloth) = 0.05715 meter [m]
• 1 inch (US survey) [in] = 0.0254000508 meter [m]
  inch (US survey) to meter, meter to inch (US survey)
• 1 barleycorn = 0.0084666667 meter [m]
• 1 mil [mil, thou] = 2.54E-5 meter [m]
  mil to meter, meter to mil
• 1 microinch = 2.54E-8 meter [m]
• 1 angstrom [A] = 1.0E-10 meter [m]
  angstrom to meter, meter to angstrom
• 1 a.u. of length [a.u., b] = 5.2917724900001E-11 meter [m]
• 1 X-unit [X] = 1.00208E-13 meter [m]
  X-unit to meter, meter to X-unit
• 1 fermi [F, f] = 1.0E-15 meter [m]
• 1 arpent = 58.5216 meter [m]
  arpent to meter, meter to arpent
• 1 pica = 0.0042333333 meter [m]
• 1 point = 0.0003527778 meter [m]
  point to meter, meter to point
• 1 twip = 1.76389E-5 meter [m]
• 1 aln = 0.5937777778 meter [m]
  aln to meter, meter to aln
• 1 famn = 1.7813333333 meter [m]
• 1 caliber [cl] = 0.000254 meter [m]
  caliber to meter, meter to caliber
• 1 centiinch [cin] = 0.000254 meter [m]
• 1 ken = 2.11836 meter [m]
  ken to meter, meter to ken
• 1 Russian archin = 0.7112 meter [m]
• 1 Roman actus = 35.47872 meter [m]
  Roman actus to meter, meter to Roman actus
• 1 vara de tarea = 2.505456 meter [m]
• 1 vara conuquera = 2.505456 meter [m]
  vara conuquera to meter, meter to vara conuquera
• 1 vara castellana = 0.835152 meter [m]
  vara castellana to meter, meter to vara castellana
• 1 cubit (Greek) = 0.462788 meter [m]
• 1 long reed = 3.2004 meter [m]
  long reed to meter, meter to long reed
• 1 reed = 2.7432 meter [m]
• 1 long cubit = 0.5334 meter [m]
  long cubit to meter, meter to long cubit
• 1 handbreadth = 0.0762 meter [m]
• 1 fingerbreadth = 0.01905 meter [m]
  fingerbreadth to meter, meter to fingerbreadth
• 1 Planck length = 1.61605E-35 meter [m]
• 1 Electron radius (classical) = 2.81794092E-15 meter [m]
  Electron radius (classical) to meter, meter to Electron radius (classical)
• 1 Bohr radius [b, a.u.] = 5.2917724900001E-11 meter [m]
• 1 Earth's equatorial radius = 6378160 meter [m]
  Earth's equatorial radius to meter, meter to Earth's equatorial radius
• 1 Earth's polar radius = 6356776.9999999 meter [m]
  Earth's polar radius to meter, meter to Earth's polar radius
• 1 Earth's distance from sun = 149600000000 meter [m]
  Earth's distance from sun to meter, meter to Earth's distance from sun
• 1 Sun's radius = 696000000 meter [m]

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A unit is a measurement of a quantity that is defined or adopted by tradition or law. Other quantities can be expressed as a multiple of the unit.

In human history, various unit systems were developed and used in different regions and cultures. Currently, the global standard of measurement is the International System of Units (SI), which is a modern form of the metric system. Although SI is intended for global use, it has not been fully adopted, and some other systems of measurement are still used in parts of the world.

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The intent of this site is to provide a convenient means to convert between the various units of measurement within different systems, as well as to provide a basic understanding of the systems currently in use, and how they interact. Refer to the Common Unit Systems page for further information.