Length units converter
Length units converter - converts units between kilometers, meters, decimeters, angstroms, miles, feet, inches, american/imperial units, nautical (sea) units and astronomical units

Symbolic algebra

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Inputs data - value and unit, which we're going to convert#

Value
Unit
Decimals

11 (meter) is equal to:#

SI (metric)#

UnitSymbolSymbol
(plain text)
Value as symbolicValue as numericNotesUnit conversion formula
yottameterShow sourceYmYmYmShow source...\text{...}-Derived length unit in SI system. One yottameter is equal to septylion of meters: 1 Ym=1024 m1\ Ym= 10^{24}\ mShow source......
zettameterShow sourceZmZmZmShow source...\text{...}-Derived length unit in SI system. One zettameter is equal to sextillion of meters: 1 Zm=1021 m1\ Zm= 10^{21}\ mShow source......
exameterShow sourceEmEmEmShow source...\text{...}-Derived length unit in SI system. One exameter is equal to quintillion of meters: 1 Em=1018 m1\ Em= 10^{18}\ mShow source......
petameterShow sourcePmPmPmShow source...\text{...}-Derived length unit in SI system. One petameter is equal to quadrillion of meters: 1 Pm=1015 m1\ Pm= 10^{15}\ mShow source......
terameterShow sourceTmTmTmShow source...\text{...}-Derived length unit in SI system. One terameter is equal to trillion of meters: 1 Tm=1012 m1\ Tm= 10^{12}\ mShow source......
gigameterShow sourceGmGmGmShow source...\text{...}-Derived length unit in SI system. One gigameter is equal to billion of meters: 1 Gm=109 m1\ Gm= 10^{9}\ mShow source......
megameterShow sourceMmMmMmShow source...\text{...}-Derived length unit in SI system. One megameter is equal to million of meters: 1 Mm=1000000 m=106 m1\ Mm=1000000\ m= 10^{6}\ mShow source......
kilometerShow sourcekmkmkmShow source...\text{...}-Derived length unit in SI system. One kilometer is equal to thausand of meters: 1 km=1000 m=103 m1\ km=1000\ m= 10^{3}\ mShow source......
hektometerShow sourcehmhmhmShow source...\text{...}-Derived length unit in SI system. One hektometer is equal to hundred of meters: 1 hm=100 m=102 m1\ hm=100\ m= 10^{2}\ mShow source......
meterShow sourcemmmShow source...\text{...}-The basic length unit in the SI system. 20.05.2019 the following meter definition was adopted: The metre, symbol m, is the SI unit of length. It is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299792458 when expressed in the unit m⋅s−1, where the second is defined in terms of the caesium frequency ΔνCs..1 m=9192631770 c299792458 ΔνCs1\ m = \frac{9192631770\ c}{299792458\ \Delta \nu_{Cs}}Show source......
decimeterShow sourcedmdmdmShow source...\text{...}-Derived length unit in SI system. One decimeter is equal to one tenth of meter: 1 dm=0.1 m=101 m1\ dm=0.1\ m= 10^{-1}\ mShow source......
centimeterShow sourcecmcmcmShow source...\text{...}-Derived length unit in SI system. One centimeter is equal to one hundredth of meter: 1 cm=0.01 m=102 m1\ cm=0.01\ m= 10^{-2}\ mShow source......
milimeterShow sourcemmmmmmShow source...\text{...}-Derived length unit in SI system. One milimeter is equal to one thousandth of meter: 1 mm=0.001 m=103 m1\ mm=0.001\ m= 10^{-3}\ mShow source......
micrometre (micron)Show sourceμm\mu mµmShow source...\text{...}-Derived length unit in SI system. One micrometre (micron) is equal to one millionth of meter: 1 μm=0.000001 m=106 m1\ \mu m=0.000001\ m= 10^{-6}\ mShow source......
nanometerShow sourcenmnmnmShow source...\text{...}-Derived length unit in SI system. One nanometer is equal to one billionth of meter: 1 nm=109 m1\ nm= 10^{-9}\ mShow source......
pikometerShow sourcepmpmpmShow source...\text{...}-Derived length unit in SI system. One pikometer is equal to one trillionth of meter: 1 pm=1012 m1\ pm= 10^{-12}\ mShow source......
femtometerShow sourcefmfmfmShow source...\text{...}-Derived length unit in SI system. One femtometer is equal to one quadrillionth of meter: 1 fm=1015 m1\ fm= 10^{-15}\ mShow source......
attometerShow sourceamamamShow source...\text{...}-Derived length unit in SI system. One attometer is equal to one quintillionth of meter: 1 am=1018 m1\ am= 10^{-18}\ mShow source......
zeptometerShow sourcezmzmzmShow source...\text{...}-Derived length unit in SI system. One zeptometer is equal to one sextillionth of meter: 1 zm=1021 m1\ zm= 10^{-21}\ mShow source......
yoctometerShow sourceymymymShow source...\text{...}-Derived length unit in SI system. One yoctometer is equal to one septillionth of meter: 1 ym=1024 m1\ ym= 10^{-24}\ mShow source......

British-american#

UnitSymbolSymbol
(plain text)
Value as symbolicValue as numericNotesUnit conversion formula
statute leagueShow source--Show source...\text{...}-Imperial unit of length. Historically defined as the distance that can be walked on foot within one hour. One statute league corresponds to three imperial miles (3 mi).1 statute league=3 mi1\ \text {statute league} = 3\ miShow source......
mileShow sourcemimimiShow source...\text{...}-Imperial length unit. One mile is equal to 1760 yards or 5280 feet.1 mi=1760 yd=5280 ft1\ mi = 1760\ yd = 5280\ ftShow source......
furlongShow sourcefurfurfurShow source...\text{...}-Historic length unit used in Anglo-Saxon countries. One furlong corresponds to one eighth of mile (1/8 mi).1 fu=18 mi1\ fu = \frac{1}{8}\ miShow source......
surveyor's chainShow sourcechchchShow source...\text{...}-A unit of length sometimes used in geodesy in Anglo-Saxon countries. One surveyor's chain corresponds to sixty six feet (66 ft). See foot unit for more.1 ch =66 ft1\ ch\ = 66\ ftShow source......
engineer's chainShow sourcechchchShow source...\text{...}-A unit of length sometimes used in technical sciences in Anglo-Saxon countries. One engineer's chain corresponds to one hundred feet (100 ft). See foot unit for more.1 ch =100 ft1\ ch\ = 100\ ftShow source......
rodShow sourcerdrdrdShow source...\text{...}-Historic length unit used in Anglo-Saxon countries. One rod corresponds to five and a half yards (5.5 yd). See the yard unit for more information.1 rd=512 yd1\ rd = 5 \frac{1}{2}\ ydShow source......
fathomShow sourcefmfmfmShow source...\text{...}-Historic length unit. One fathom corresponded to the length of the arms of an adult male. In Great Britain it was used to measure sea depth on navigational charts. One British fathom is equivalent to six feet (6 ft).1 fm=6 ft1\ fm = 6\ ftShow source......
yardShow sourceydydydShow source...\text{...}-Unit of length used in Anglo-Saxon countries. One yard corresponds to three feet (3 ft). See unit rate for more information.1 yd=3 ft1\ yd = 3\ ftShow source......
footShow sourceftftftShow source...\text{...}-Unit of length used in Anglo-Saxon countries. One foot corresponds to twelve inches (12 in). See the unit inch for more information.1 ft=12 in1\ ft = 12\ inShow source......
linkShow sourcelililiShow source...\text{...}-Equivalent to one hundredth of a survey's chain.1 li=1100 ch1\ li = \frac{1}{100}\ chShow source......
handShow source--Show source...\text{...}-A unit of length used in Anglo-Saxon countries to measure the height of riding horses. One hand corresponds to the average width of a human hand, i.e. approx. 7.44 centimeters.1 hand=7.44 cm1\ \text{hand} = 7.44\ cmShow source......
inchShow sourceinininShow source...\text{...}-An Anglo-Saxon unit of length defined historically as three times the average length of barley grain, i.e. about 2.54 centimeters.1 in=2.54 cm1\ in = 2.54\ cmShow source......
lineShow source--Show source...\text{...}-An Anglo-Saxon unit of length used to determine the caliber of a weapon and historically to enter the dimensions of the buttons. One line corresponds to a tenth of an inch (0.1 in).1 line=110 in1\ \text{line} = \frac{1}{10}\ inShow source......

Astronomical#

UnitSymbolSymbol
(plain text)
Value as symbolicValue as numericNotesUnit conversion formula
parsecShow sourcepcpcpcShow source...\text{...}-Distance unit used in astronomy. One parsec corresponds to the distance from which half of the great axis of the Earth's orbit is visible as an arc with a length of 1 arc second, which corresponds to about 3.2616 light years.1 pc=3.2616 ly1\ pc = 3.2616\ lyShow source......
light yearShow sourcelylylyShow source...\text{...}-Distance unit used in astronomy. One light year corresponds to the distance that light travels in a vacuum in one Julian year i.e. within 31 557 600 seconds.1 ly=31 557 600 sc9.4607 1015 m1\ ly = 31\ 557\ 600\ s \cdot c \approx 9.4607 \ 10^{15}\ mWhere:Show source......
light minuteShow source--Show source...\text{...}-Distance unit used in astronomy. One light minute corresponds to the distance that light travels in a vacuum in one minute or sixty light seconds. See the light second unit for more information.1 lm=60 ls1\ lm = 60\ lsShow source......
light secondShow source--Show source...\text{...}-Distance unit used in astronomy. One light second corresponds to the distance that light travels in a vacuum in one second, i.e. about three hundred million kilometers.1 ls=2.99792458×108m1\ ls = 2.99792458 \times 10^{8} mShow source......
astronomical unitShow sourceauauauShow source...\text{...}-Distance unit used in astronomy. One astronomical unit corresponds to the average distance of the Earth from the Sun or about one hundred and fifty million kilometers.1 au=1.495978707×1011m1\ au = 1.495978707 \times 10^{11} mShow source......

Nautical#

UnitSymbolSymbol
(plain text)
Value as symbolicValue as numericNotesUnit conversion formula
sea leagueShow source--Show source...\text{...}-Historic unit of length. One sea league roughly corresponds to the sight range of a man who is 178 centimeters tall at sea level or three nautical miles (3 mi).1 sea league=3 mi=5.556 km1\ \text{sea league} = 3\ mi = 5.556\ kmShow source......
sea mileShow sourcenminminmiShow source...\text{...}-Junit of length used in maritime navigation and aviation. One nautical mile is equal to the length of the Earth's meridian arc, corresponding to one arc minute of a large circle.1 nmi=1852 m1\ nmi = 1852\ mShow source......
sea cabelShow source--Show source...\text{...}-Equivalent to one-tenth of a nautical mile (1/10 nmi). See nautical unit to learn more.1 sea cabel=110 nmi1\ \text{sea cabel} = \frac{1}{10}\ nmiShow source......
british cabelShow source--Show source...\text{...}-Equivalent to a hundred fathoms (100 fm). See the fathom unit for more information.1 british cabel=100 fm1\ \text{british cabel} = 100\ fmShow source......
US cabelShow source--Show source...\text{...}-Equivalent to a hundred twenty fathoms (120 fm). See the fathom unit for more information.1 US cabel=120 fm1\ \text{US cabel} = 120\ fmShow source......

Chemistry and atomic physics#

UnitSymbolSymbol
(plain text)
Value as symbolicValue as numericNotesUnit conversion formula
angstromShow sourceA˚\text{Å}ÅShow source...\text{...}-A unit of length used in chemistry and atomic physics. One angstrom has been chosen so that the distances on the atom scale, e.g. the length of bonds in atomic molecules, do not require the use of additional prefixes. The bond length in the hydrogen molecule is about 0.74 angstroms. One angstrom corresponds to one tenth of a nanometer (0.1 nm).1 A˚=110 nm=1010 m1\ \text{Å} = \frac{1}{10}\ nm = 10^{-10}\ mShow source......

What is "Length"?#

The word "length" has several meanings (ex. the length of a word). We will focus on length in physical meaning in this article.

The definition of length:
LENGTH is the physical measure of distance between two points (according to measurements in the Euclidian space - so linear). The distance itself can be measured as a straight line, but also as a length of a curve.

The meaning of "length" could be equal to one of the following:
  • distance - most common: description of how far apart objects are. In strictly physical meaning - the length of way the object moves (possibly not the shortest way connecting two points)
  • displacement - the length of shortest possible way connecting two points
  • height - mostly in a vertical size of an object (like how "tall" it is)
  • altitude - when talking about how far in the air the object is (ex. how high is the airplane)
  • depth
  • width
  • size
Typically the symbol of length is L or l. Base unit is 1 meter. Length cannot be negative.

Length is measure of one dimension. However there is also area for 2 dimensions (length squared) and volume for 3 dimensions.

Units#

The meter (also called metre) is the base unit of length in SI. It is defined as the distance travelled by light in vacuum during a time interval of 1/299.792.458 of a second. It has been defined on 17th General Conference on Weights and Measures in 1983.

After thousands of years of distance measurements, the thousands of units has been defined. The most known units we found are:
  • meter - and metric dependent units like kilometer, decimeter, centimeter, milimeter, micrometer, nanometer, angstrom etc. - the decimal multiples and submultiples of meter (so, thousands, milions... of meters) according to SI defined prefixes
  • mile, yard, foot, fathom, inch and less known league, furlong, chain, rod, link, hand, line - british (imperial) and american(US) units
  • parsec, astronomical unit - dedicated for astronomy
  • light year, light minute and light second - the distance travelled by light in vacuum during given unit of time (a year, minute, second etc.). These are really big lengths, so also used mainly for astronomical measurements.
  • sea league, sea mile, cabel (british or american) - are nautical (sea realated) units.

How to convert#

  • Enter the number to field "value" - enter the NUMBER only, no other words, symbols or unit names. You can use dot (.) or comma (,) to enter fractions.
    Examples:
    • 1000000
    • 123,23
    • 999.99999
  • Find and select your starting unit in field "unit". Some unit calculators have huge number of different units to select from - it's just how complicated our world is...
  • And... you got the result in the table below. You'll find several results for many different units - we show you all results we know at once. Just find the one you're looking for.

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