Area
system unit code
(alternative)
QID symbol or
abbrev.
notes sample
default conversion
combinations
SI square kilometre km2 Q712226 km2 US spelling: square kilometer
1.0 km2 (0.39 sq mi)
  • km2 sqmi
square hectometre hm2 Q35852 hm2 US spelling: square hectometer
1.0 hm2 (2.5 acres)
square decametre dam2 Q23931040 dam2 US spelling: square dekameter
1.0 dam2 (1,100 sq ft)
square metre m2 Q25343 m2 US spelling: square meter
1.0 m2 (11 sq ft)
  • m2 sqft
square decimetre dm2 Q3331719 dm2 US spelling: square decimeter
1.0 dm2 (16 sq in)
square centimetre cm2 Q2489298 cm2 US spelling: square centimeter
1.0 cm2 (0.16 sq in)
  • cm2 sqin
square millimetre mm2 Q2737347 mm2 US spelling: square millimeter
1.0 mm2 (0.0016 sq in)
  • mm2 sqin
non-SI metric hectare ha Q35852 ha equivalent to one square hectometre 1.0 ha (2.5 acres)
Imperial
&
US customary

ਫਰਮਾ:Convert/list of units/area/impus

Maritime units

ਫਰਮਾ:Convert/list of units/area/maritime

Middle Eastern

ਫਰਮਾ:Convert/list of units/area/Middle Eastern

Japanese

ਫਰਮਾ:Convert/list of units/area/Japanese

Korean

ਫਰਮਾ:Convert/list of units/area/Korean

Spanish cuerda cda Q23931245 cda 1.0 cda (0.39 ha; 0.97 acres)