kilometer (km)

decimeter (dm)

centimeter (cm)

millimeter (mm)

micrometer (µm)

nanometer (nm)

mile (mi, mi(Int))

yard (yd)

foot (ft)

inch (in)

light-year (ly)

exameter (Em)

petameter (Pm)

terameter (Tm)

gigameter (Gm)

megameter (Mm)

hectometer (hm)

dekameter (dam)

micron (µ)

picometer (pm)

femtometer (fm)

attometer (am)

megaparsec (Mpc)

kiloparsec (kpc)

parsec (pc)

astronomical unit (AU, UA)

league (lea)

nautical league (UK)

nautical league (International)

statute league (st.league)

nautical mile (UK) (NM (UK))

nautical mile (international)

statute mile (mi, mi (US))

survey mile (US) (mi)

Roman mile

kiloyard (kyd)

furlong (fur)

survey furlong (US) (fur)

chain (ch)

survey chain (US) (ch)

rope

rod (rd)

survey rod (US) (rd)

perch

pole

fathom (fath)

survey fathom (US) (fath)

ell

survey foot (US) (ft)

link (li)

survey link (US) (li)

cubit (UK)

hand

span (cloth)

finger (cloth)

nail (cloth)

survey inch (US) (in)

barleycorn

mil (mil, thou)

microinch

ångström (A)

atomic unit of length (a.u., b)

x-unit (X)

fermi (F, f)

arpent

pica

point

twip

aln

famn

caliber (cl)

centiinch (cin)

ken

Russian archin

Roman actus

vara de tarea

vara conuquera

vara castellana

Greek cubit

long reed

reed

long cubit

handbreadth

fingerbreadth

Planck length

classical electron radius

Bohr radius (b, a.u.)

Earth's equatorial radius

Earth's polar radius

Earth's distance from the Sun

Sun's radius

meter (m)

decimeter (dm)

centimeter (cm)

millimeter (mm)

micrometer (µm)

nanometer (nm)

mile (mi, mi(Int))

yard (yd)

foot (ft)

inch (in)

light-year (ly)

exameter (Em)

petameter (Pm)

terameter (Tm)

gigameter (Gm)

megameter (Mm)

hectometer (hm)

dekameter (dam)

micron (µ)

picometer (pm)

femtometer (fm)

attometer (am)

megaparsec (Mpc)

kiloparsec (kpc)

parsec (pc)

astronomical unit (AU, UA)

league (lea)

nautical league (UK)

nautical league (International)

statute league (st.league)

nautical mile (UK) (NM (UK))

nautical mile (international)

statute mile (mi, mi (US))

survey mile (US) (mi)

Roman mile

kiloyard (kyd)

furlong (fur)

survey furlong (US) (fur)

chain (ch)

survey chain (US) (ch)

rope

rod (rd)

survey rod (US) (rd)

perch

pole

fathom (fath)

survey fathom (US) (fath)

ell

survey foot (US) (ft)

link (li)

survey link (US) (li)

cubit (UK)

hand

span (cloth)

finger (cloth)

nail (cloth)

survey inch (US) (in)

barleycorn

mil (mil, thou)

microinch

ångström (A)

atomic unit of length (a.u., b)

x-unit (X)

fermi (F, f)

arpent

pica

point

twip

aln

famn

caliber (cl)

centiinch (cin)

ken

Russian archin

Roman actus

vara de tarea

vara conuquera

vara castellana

Greek cubit

long reed

reed

long cubit

handbreadth

fingerbreadth

Planck length

classical electron radius

Bohr radius (b, a.u.)

Earth's equatorial radius

Earth's polar radius

Earth's distance from the Sun

Sun's radius