Area Converter

Area unit conversion table

Name of unit	Symbol	Definition	Relation to SI units
acre (international)	ac	≡ 1 ch × 10 ch= 7003404685642240000♠4840 sq yd	≡ 7003404685642240000♠4 046.856 4224 m ²
acre (US survey)	ac	≡ 10 sq ch = 7003404685642240000♠4840 sq yd, also 7003404685642240000♠43 560 sq ft	≈ 7003404687300000000♠4 046.873 m ²
are	a	≡ 100 m ²	≡ 100 m ²
barn	b	≡ 10 ⁻²⁸ m ²	≡ 10 ⁻²⁸ m ²
barony		≡ 7003400000000000000♠4000 ac	≡ 7007161874256895999♠1.618 74256896×10 ⁷ m ²
board	bd	≡ 1 in × 1 ft	≡ 6997774192000000000♠7.741 92×10 ⁻³ m ²
boiler horsepower equivalent direct radiation	bhp EDR	≡ 1 ft ²× 1 bhp / (240 BTU _IT/h)	≈ 7001129581740000000♠12.958 174 m ²
circular inch	circ in	≡ ^π⁄ ₄ sq in	≈ 6996506707500000000♠5.067 075×10 ⁻⁴ m ²
circular mil; circular thou	circ mil	≡ ^π⁄ ₄ mil ²	≈ 6990506707500000000♠5.067 075×10 ⁻¹⁰ m ²
cord		≡ 192 bd	≡ 7000148644864000000♠1.486 44864 m ²
cuerda (PR Survey)	cda	≡ 1 cda x 1 cda = 6999971222000000000♠0.971 222acre	≡ 7003393039562500000♠3 930.395 625 m ²
dunam		≡ 7003100000000000000♠1000 m ²	= 7003100000000000000♠1000 m ²
guntha (India)		≡ 121 sq yd	≈ 101.17 m ²
hectare	ha	≡ 7004100000000000000♠10 000 m ²	≡ 7004100000000000000♠10 000 m ²
hide		≈ 120 ac (variable)	≈ 7005500000000000000♠5 ×10 ⁵ m ²
rood	ro	≡ ¹⁄ ₄ ac	= 7003101171410560000♠1 011.714 1056 m ²
ping		≡ ²⁰⁄ ₁₁ m × ²⁰⁄ ₁₁ m	≈ 7000330600000000000♠3.306 m ²
section		≡ 1 mi × 1 mi	= 7006258998811033599♠2.589 988110336×10 ⁶ m ²
shed		≡ 10 ⁻⁵² m ²	= 10 ⁻⁵² m ²
square (roofing)		≡ 10 ft × 10 ft	= 7000929030400000000♠9.290 304 m ²
square chain (international)	sq ch	≡ 66 ft × 66 ft= ¹⁄ ₁₀ac	≡ 7002404685642240000♠404.685 64224 m ²
square chain (US Survey)	sq ch	≡ 66 ft (US) × 66 ft (US)= ¹⁄ ₁₀US survey acre	≈ 7002404687300000000♠404.6873 m ²
square foot	sq ft	≡ 1 ft × 1 ft	≡ 6998929030400000000♠9.290 304×10 ⁻² m ²
square foot (US Survey)	sq ft	≡ 1 ft (US) × 1 ft (US)	≈ 6998929034116132750♠9.290 3411613275×10 ⁻² m ²
square inch	sq in	≡ 1 in × 1 in	≡ 6996645160000000000♠6.4516 ×10 ⁻⁴ m ²
square kilometre	km ²	≡ 1 km × 1 km	= 10 ⁶m ²
square link (Gunter's)(International)	sq lnk	≡ 1 lnk × 1 lnk ≡ 0.66 ft × 0.66 ft	= 6998404685642240000♠4.046 8564224×10 ⁻² m ²
square link (Gunter's)(US Survey)	sq lnk	≡ 1 lnk × 1 lnk≡ 0.66 ft (US) × 0.66 ft (US)	≈ 6998404687200000000♠4.046 872×10 ⁻² m ²
square link (Ramsden's)	sq lnk	≡ 1 lnk × 1 lnk ≡ 1 ft × 1 ft	= 6998929030400000000♠0.092 90304 m ²
square metre (SI unit)	m ²	≡ 1 m × 1 m	= 1 m ²
square mil; square thou	sq mil	≡ 1 mil × 1 mil	= 6990645160000000000♠6.4516 ×10 ⁻¹⁰ m ²
square mile	sq mi	≡ 1 mi × 1 mi	≡ 7006258998811033599♠2.589 988110336×10 ⁶ m ²
square mile (US Survey)	sq mi	≡ 1 mi (US) × 1 mi (US)	≈ 7006258999846999999♠2.589 99847×10 ⁶ m ²
square rod/pole/perch	sq rd	≡ 1 rd × 1 rd	= 7001252928526400000♠25.292 85264 m ²
square yard (International)	sq yd	≡ 1 yd × 1 yd	≡ 6999836127360000000♠0.836 12736 m ²
stremma		≡ 7003100000000000000♠1000 m ²	= 7003100000000000000♠1000 m ²
township		≡ 36 sq mi (US)	≈ 7007932399400000000♠9.323 994×10 ⁷ m ²
yardland		≈ 30 ac	≈ 7005120000000000000♠1.2 ×10 ⁵ m ²

square kilometre(km²)
hectare(ha)
mu
square metre (SI unit)(m²)
square decimeter(dm²)
square centimeter(cm²)
square millimeter(mm²)
square mile(sq mi)
acre (ac ²)
square rod/pole/perch(sq rd)
square yard(sq yd)
square foot(sq ft)
square inch(sq in)