# Area unit conversion table

This table contains conversions between almost all area units. Some units of area are common and some are relatively rare. This is a good query tool.  Area Converter

Name of unitSymbolDefinitionRelation to SI units
acre (international)ac1 ch × 10 ch= 4840 sq yd4 046.856 4224 m 2
acre (US survey)ac≡ 10 sq ch = 4840 sq yd, also 43 560 sq ft4 046.873 m 2
area≡ 100 m 2≡ 100 m 2
barnb≡ 10 −28 m 2≡ 10 −28 m 2
barony 4000 ac1.618 74256896×10 7 m 2
boardbd1 in × 1 ft7.741 92×10 −3 m 2
boiler horsepower equivalent direct radiationbhp EDR≡ 1 ft 2× 1 bhp / (240 BTU IT/h)12.958 174 m 2
circular inchcirc in≡ ​ π4 sq in5.067 075×10 −4 m 2
circular mil; circular thoucirc mil≡ ​ π4 mil 25.067 075×10 −10 m 2
cord ≡ 192 bd1.486 44864 m 2
cuerda (PR Survey)cda≡ 1 cda x 1 cda = 0.971 222acre3 930.395 625 m 2
dunam 1000 m 2= 1000 m 2
guntha (India) ≡ 121 sq yd≈ 101.17 m 2
hectareha10 000 m 210 000 m 2
hide ≈ 120 ac (variable)5 ×10 5 m 2
roodro≡ ​ 14 ac= 1 011.714 1056 m 2
ping≡ ​ 2011 m × ​ 2011 m3.306 m 2
section1 mi × 1 mi= 2.589 988110336×10 6 m 2
shed ≡ 10 −52 m 2= 10 −52 m 2
square (roofing)10 ft × 10 ft= 9.290 304 m 2
square chain (international)sq ch66 ft × 66 ft= ​ 110ac404.685 64224 m 2
square chain (US Survey)sq ch66 ft (US) × 66 ft (US)= ​ 110US survey acre404.6873 m 2
square footsq ft1 ft × 1 ft9.290 304×10 −2 m 2
square foot (US Survey)sq ft1 ft (US) × 1 ft (US)9.290 3411613275×10 −2 m 2
square inchsq in1 in × 1 in6.4516 ×10 −4 m 2
square kilometrekm 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= 4.046 8564224×10 −2 m 2
square link (Gunter's)(US Survey)sq lnk1 lnk × 1 lnk0.66 ft (US) × 0.66 ft (US)4.046 872×10 −2 m 2
square link (Ramsden's)sq lnk≡ 1 lnk × 1 lnk ≡ 1 ft × 1 ft= 0.092 90304 m 2
square metre (SI unit)m 2≡ 1 m × 1 m= 1 m 2
square mil; square thousq mil≡ 1 mil × 1 mil= 6.4516 ×10 −10 m 2
square milesq mi≡ 1 mi × 1 mi2.589 988110336×10 6 m 2
square mile (US Survey)sq mi≡ 1 mi (US) × 1 mi (US)2.589 99847×10 6 m 2
square rod/pole/perchsq rd≡ 1 rd × 1 rd= 25.292 85264 m 2
square yard (International)sq yd≡ 1 yd × 1 yd0.836 12736 m 2
stremma 1000 m 2= 1000 m 2
township ≡ 36 sq mi (US)9.323 994×10 7 m 2
yardland ≈ 30 ac1.2 ×10 5 m 2