Expert Converter
Length Units
Convert online metric Length Units measurement using this tool.
 

 

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How to use Length Units Converter
Enter the value to convert from into the input box on the top. Select the unit to convert from in the left units list. Select the unit to convert to in the right units list. Click 'Convert' button then the conversion result will immediately appear in the output box.

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Popular Units

UnitSymbolDefinitionConversion to SI units
ångström Å = 1 x 10-10 m = 0.1 nm
astronomical unit AU ~ Distance from Earth to Sun ~ 149 597 871 464 m
barleycorn (H)   = ? in (see note above about rounding) ~ 8.46 x 10-3 m
bohr, atomic unit of length a0 = Bohr radius of hydrogen ~ 5.291 772 0859 x 10-11 ± 3.6 x 10-20 m
cable length (Imperial)   = 608 ft ~ 185.3184 m
cable length (International)   = 1/10 nmi = 185.2 m
cable length (U.S.)   = 720 ft = 219.456 m
chain (Gunter's; Surveyor's) ch = 66 ft(US) = 4 rods ~ 20.116 84 m
cubit (H)   = Distance from fingers to elbow ~ 18in ~ 0.5 m
ell (H) ell = 45 in (In England usually) = 1.143 m
fathom fm = 6 ft = 1.8288 m
fermi fm = 1 x 10-15 m = 1 x 10-15 m
finger   = 7/8 in = 0.022 225 m
finger (cloth)   = 4½ in = 0.1143 m
foot (Benoît) (H) ft (Ben) ~ 0.304 799 735 m
foot (Clarke's; Cape) (H) ft (Cla) ~ 0.304 797 2654 m
foot (Indian) (H) ft Ind ~ 0.304 799 514 m
foot (International) ft = 1/3 yd = 0.3048 m = 12 inches = 0.3048 m
foot (Sear's) (H) ft (Sear) ~ 0.304 799 47 m
foot (U.S. Survey) ft (US) = 1200/3937 m ~ 0.304 800 610 m
french; charriere F = ? mm = 3.3 x 10-4 m
furlong fur = 10 chains = 660 ft = 220 yd = 201.168 m
hand   = 4 in = 0.1016 m
inch (International) in = 1/36 yd = 1/12 ft = 0.0254 m
league (land) lea = 3 US Statute miles = 4 828.032 m
light-day   = 24 light-hours = 2.590 206 837 12 x 1013 m
light-hour   = 60 light-minutes = 1.079 252 8488 x 1012 m
light-minute   = 60 light-seconds = 1.798 754 748 x 1010 m
light-second   = Distance light travels in one second in vacuum = 299 792 458 m
light-year l.y. = Distance light travels in vacuum in 365.25 days = 9.460 730 472 5808 x 1015 m
line ln = 1/12 in = 0.002 116 m
link (Gunter's; Surveyor's) lnk = 1/100 ch = 0.66 ft = 7.92in = 0.201 168 m
link (Ramsden's; Engineer's) lnk = 1 ft = 0.3048 m
metre (SI base unit) m = Distance light travels in 1/299 792 458 of a second in vacuum. ~ distance from equator to pole/10 000 000 = 1 m
mickey   = 1/200 in = 1.27 x 10-4 m
micron µ = 1 x 10-6 m
mil; thou mil = 1 x 10-3 in = 2.54 x 10-5 m
mil (Sweden and Norway) mil = 10 km = 10 000 m
mile (geographical) (H) = 6082 ft = 1 853.7936 m
mile (international) mi = 80 chains = 5280 ft = 1760 yd = 1 609.344 m
mile (tactical or data) = 6000 ft = 1828.8 m
mile (telegraph) (H) mi = 6087 ft = 1 855.3176 m
mile (U.S. Survey) mi = 5280 ft (US Survey feet) = (5280 x 1200/3937) m ~ 1 609.347 219 m
nail (cloth)   = 2¼ in = 0.057 15 m
nautical league NL; nl = 3 nmi = 5556 m
nautical mile (Admiralty) NM (Adm); nmi (Adm) = 6080 ft = 1853.184 m
nautical mile (international) NM; nmi = 1852 m = 1852 m
nautical mile (US pre 1954) = 1853.248 m = 1853.248 m
pace   = 2.5 ft = 0.762 m
palm   = 3 in = 0.0762 m
parsec pc Distance of star with parallax shift of one arc second from a base of one astronomical unit ~ 3.085 677 82 x 1016 ± 6 x 106 m
pica   = 12 points Dependent on point measures.
point (American, English) pt = 1/72.272 in ~ 0.000 351 450 m
point (Didot; European) pt = 1/12 x 1/72 of pied du roi;

After 1878:
= 5/133 cm
~ 0.000 375 97 m;

After 1878:
~ 0.000 375 939 85 m
point (PostScript) pt = 1/72 in = 0.000 352 7 m
point (TeX) pt = 1/72.27 in = 0.000 351 4598 m
quarter   = ¼ yd = 0.2286 m
rod; pole; perch (H) rd = 16½ ft = 5.0292 m
rope (H) rope = 20 ft = 6.096 m
span (H)   = 9 in = 0.2286 m
spat = 1 x 1012 m
stick (H)   = 2 in = 0.0508 m
stigma; bicron (picometre) pm = 1 x 10-12 m
twip twp = 1/1440 in = 1.7638 x 10-5 m
x unit; siegbahn xu ~ 1.0021 x 10-13 m
yard (International) yd = 0.9144 m = 3 ft = 36 in = 0.9144 m
source: wikipedia

Convert From and To Units

• Angstrom (Å)
• Astronomical Unit (AU)
• Attometer (am)
• Barleycorn
• Caliber (cl)
• Centimeter (cm)
• Chain (ch)
• Inch (in)
• Dekameter (dam)
• Decimeter (dm)
• Ell
• Em (computer)
• Exameter (Em)
• Fathom
• Feet (Foot) (ft)
• Femtometer (fm)
• Fermi (fm)
• Furlong
• Gigameter (Gm)
• Hand
• Hectometer (Hm)
• Kilometer (Km)
• Kiloparsec (kpc)
• Kiloyard
• Megameter (Mm)
• Micrometer (µm)
• Millimeter (mm)
• Myriameter
• League (lea)
• Light Year (l.y)
• Link
• Meter (m)
• Microinch
• Micron (µ)
• Mile (mi)
• Nanometer (nm)
• Nautical Mile (Sea Mile) (International)
• Nautical Mile (Sea Mile) (UK)
• Parsec (pc)
• Perch
• Petameter (Pm)
• Pica (computer)
• Pica (printer)
• Picometer (pm)
• Point (computer) (pt)
• Point (printer) (pt)
• Pole
• Rod
• Rope
• Tenthmeter
• Terameter (Tm)
• Yard (yd)
• Yoctometer (ym)
• Yottameter (Ym)
• Zeptometer (zm)
• Zettameter (Zm)