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Convert/list of units/length/short list

LENGTH
(Full list)
system unit unit-
code
abbrev-
iation
notes sample default
conversion
combination
output units
SI megametre Mm Mm US spelling: megameter
1.0 Mm (620 mi)
kilometre km km US spelling: kilometer
1.0 km (0.62 mi)
  • km mi
metre m m US spelling: meter
1.0 m (3 ftin)
  • m ft
  • m ftin
centimetre cm cm US spelling: centimeter
1.0 cm (0.39 in)
  • cm in
millimetre mm mm US spelling: millimeter
1.0 mm (0.039 in)
  • mm in
micrometre μm (um) µm US spelling: micrometer
1.0 µm (3.9×10−5 in)
nanometre nm nm US spelling: nanometer
1.0 nm (3.9×10−8 in)
non-SI metric ångström Å
(angstrom)
Å 1.0 Å (3.9×10−9 in)
Imperial
&
US customary
mile mi mi 1.0 mi (1.6 km)
  • mi km
furlong furlong (none) 1.0 furlong (660 ft; 200 m)
chain chain (none) 1.0 chain (66 ft; 20 m)
rod rd rd For other names of this unit see the full list. 1.0 rd (17 ft; 5.0 m)
fathom fathom (none) assumes 1 fathom ≡ 6 ft 1.0 fathom (6.0 ft; 1.8 m)
yard yd yd assumes the international definition 1.0 yd (0.91 m)
foot ft (foot) ft code "foot" will show "foot" if plural.

code "ft" will show "foot" or "feet" depending on value.

1.0 ft (0.30 m)
  • ftin (feet and inches)
  • ft m (foot m)
inch in in 1.0 in (25 mm)
  • in cm
  • in mm
Other nautical mile nmi nmi the international standard nautical mile
For other nautical miles see the full list.
1.0 nmi (1.9 km; 1.2 mi)
parsec pc pc 1.0 pc (3.3 ly)
light-year ly ly 1.0 ly (63,000 AU)
astronomical unit AU AU 1.0 AU (150,000,000 km; 93,000,000 mi)