Length
system unit code
(other)
symbol notes conversion factor/m combinations
SI Gm Gm Gm US spelling: gigameter
10 Gm (6.200.000 mi)
Mm Mm Mm US spelling: megameter
10 Mm (6.200 mi)
km km km US spelling: kilometer
10 km (6,2 mi)
  • km mi
hm hm hm US spelling: hectometer
10 hm (3.300 ft)
dam dam dam US spelling: dekameter
10 dam (330 ft)
m m m US spelling: meter
10 m (33 ft)
  • m ft (m foot)
dm dm dm US spelling: decimeter
10 dm (39 in)
cm cm cm US spelling: centimeter
10 cm (3,9 in)
  • cm in
mm mm mm US spelling: millimeter
10 mm (0,39 in)
  • mm in
µm μm
(um, micrometre)
µm US spelling: micrometer
10 µm (3,3×10−5 ft)


nm nm nm US spelling: nanometer
10 nm (3,9×10−7 in)
non-SI metric Å Å
(angstrom)
Å 10 Å (3,9×10−8 in)
Imperial
&
US customary
mi mi mi 10 mi (16 km)
  • mi km
furlong furlong (none) 10 furlongs (6.600 ft; 2.000 m)
chain chain (none) 10 chains (660 ft; 200 m)
rd rd rd 10 rd (160 ft; 50 m)
pole pole (none) equivalent to a rod 10 poles (160 ft; 50 m)
perch perch (none) equivalent to a rod 10 perches (160 ft; 50 m)
fathom fathom (none) assumes 1 fathom ≡ 6 ft 10 fathoms (60 ft; 18 m)
yd yd yd assumes the international definition 10 yd (9,1 m)
  • yd m
ft ft (foot) ft long code "foot" outputs foot (and never feet)


To convert from feet and inches use {{convert|...|ft|...|in}}

10 ft (3,0 m)
  • ftin (feet/inches)
  • ft m (foot m)
h hand h 10 h (40 in; 102 cm)
in in in 10 in (250 mm)
  • in cm
  • in mm
Maritime units nmi nmi nmi the international standard nautical mile 10 nmi (19 km; 12 mi)
nmi oldUKnmi
(admiralty nmi)
nmi 6080 ft
the pre-1970 British nautical mile
10 nmi (19 km; 12 mi)
Brnmi (Brit) nmi
admi nmi (admiralty)
nmi oldUSnmi nmi 6080.2 ft
the pre-1954 US nautical mile
10 nmi (19 km; 12 mi)
pre1954USnmi (pre‑1954 US) nmi
pre1954U.S.nmi (pre‑1954 U.S.) nmi
Other Gpc Gpc Gpc 10 Gpc (33 Gly)
Mpc Mpc Mpc 10 Mpc (33 Mly)
kpc kpc kpc 10 kpc (33 kly)
pc pc (parsec) pc 10 pc (33 ly)
Gly Gly Gly 10 Gly (3.100 Mpc)
Mly Mly Mly 10 Mly (3.100 kpc)
kly kly kly 10 kly (3.100 pc)
ly ly ly 10 ly (630.000 AU)
AU AU AU 10 AU (1,5×109 km; 930.000.000 mi)

(end Length units)