SI prefixes applied to the square metre

The square metre may be used with all SI prefixes used with the meter.

Multiplication	Name	Symbol		Multiplication	Name	Symbol
100	square metre (centiare)	m2		100	square metre (centiare)	m2
102	square decametre (are)	dam2		10–2	square decimetre	dm2
104	square hectometre (hectare)	hm2		10–4	square centimetre	cm2
106	square kilometre	km2		10–6	square millimetre	mm2
1012	square mega metre	Mm2		10–12	square micrometre	µm2
1018	square gig metre	Gm2		10–18	square nanometre	nm2
1024	square terametre	Tm2		10–24	square picometre	pm2
1030	square petametre	Pm2		10–30	square femtometre	fm2
1036	square exametre	Em2		10–36	square attometre	am2
1042	square zettametre	Zm2		10–42	square zeptometre	zm2
1048	square yottametre	Ym2		10–48	square yoctometre	ym2

A square metre is equal to:

• 0.000 001 square kilometre (km²)
• 10,000 square centimetres (cm²)
• 0.000 1 hectares (ha)
• 0.001 decares (daa)
• 0.01 ares (a)
• 0.1 deciares (da)
• 1 centiare (ca)
• 0.000 247 105 381 acres
• 1.195 990 square yards
• 10.763 911 square feet

1,550.003 1 square inches