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# Acres

The acre is a unit of land area used in the imperial and US customary systems. It is defined as the area of 1 chain by 1 furlong (66 by 660 feet), which is exactly equal to  1/640 of a square mile, 43,560 square feet, approximately 4,047 m2, or about 40% of a hectare.

The acre is commonly used in Antigua and Barbuda Australia, American Samoa, the Bahamas, Belize, the British Virgin Islands, the Cayman Islands, Canada, Dominica, the Falkland Islands, Grenada, Ghana, Guam, the Northern Mariana Islands, India, Sri Lanka, Bangladesh, Nepal, Ireland, Jamaica, Montserrat, Myanmar, Pakistan, Samoa, St. Lucia, St. Helena, St. Kitts and Nevis, St. Vincent and the Grenadines, Turks and Caicos, the United Kingdom, the United States and the US Virgin Islands.

The international symbol of the acre is ac. The most commonly used acre today is the international acre. In the United States both the international acre and the US survey acre are in use, but differ by only two parts per million, see below. The most common use of the acre is to measure tracts of land. One international acre is defined as exactly 4,046.8564224 square metres.

Acres
Symbol/abbreviation: ac
Unit of: AREA
AREA's base unit: square meters (Non-SI/Derived Unit)
In relation to the base unit (square meters), 1 Acres = 4046.86 square meters.
[Conversion table] 1 Acres (ac) to all area units
1 ac= 1 acres (ac)
1 ac= 40.4686 ares (a)
1 ac= 1.00138019561 arpents (arp)
1 ac= 4.04686E+31 barns (barn)
1 ac= 0.404686 bunders (b)
1 ac= 0.313710077519 carreau (carreau)
1 ac= 0.00832687242798 carucate (carucate)
1 ac= 0.750000663033 cawneys (cawney)
1 ac= 4046.86 centiares (ca)
1 ac= 7986580.02891 circular inches (c in)
1 ac= 7.98658035991E+12 circular mils (c mil)
1 ac= 1.02963171805 cuerdas (cuerda)
1 ac= 4.04686 decares (daa)
1 ac= 404.686 deciares (da)
1 ac= 4.04686 dekares (daa )
1 ac= 239.048969224 dhurs (dhur)
1 ac= 4.04686 dunams (dunam)
1 ac= 6.08325195084E+31 electron cross sections (ecs)
1 ac= 3.99887351779 farthingales (fa)
1 ac= 0.963538095238 feddans (feddan)
1 ac= 0.756250683256 football fields (ff)
1 ac= 0.404686 hectares (ha)
1 ac= 0.00625000552531 homesteads (hs)
1 ac= 2.02343 jeribs (jerib)
1 ac= 2498.0617284 jo JAPAN (jo)
1 ac= 26.2340204849 kapplands (kapp)
1 ac= 0.472377728493 morgen SOUTH AFRICA (morgen)
1 ac= 0.050000044479 nooks (nook)
1 ac= 0.0674476666667 oxgangs (oxgangs)
1 ac= 1224.17334434 pings (ping)
1 ac= 1.54927453007E+73 planck areas (Ap)
1 ac= 0.632321875 plazas (plaza)
1 ac= 1224.17334434 pyeongs (pyeong)
1 ac= 2.5292875 rais (ไร่)
1 ac= 4.00000353618 roods (rood)
1 ac= 43560.038509 sabins (sabin)
1 ac= 0.00156250138134 sections (section)
1 ac= 0.566787114846 soccer fields (soccer field)
1 ac= 4.04686E+23 square angstroms (Å2, sq Å)
1 ac= 1.80828697734E-19 square astronomical units (au2, sq au)
1 ac= 62742015503.9 square calibers (sq cal)
1 ac= 40468600 square centimeters (cm2, sq cm)
1 ac= 10.0000088404 square chains (sq ch)
1 ac= 19360.0171151 square cubits (sq cubit)
1 ac= 40.4686 square decameters (dam2, sq dam)
1 ac= 404686 square decimeters (dm2, sq dm)
1 ac= 40.4686 square dekameters (dm2, sq dam)
1 ac= 11151369.8583 square digits (sq digit)
1 ac= 1210.00086709 square fathoms (sq fath)
1 ac= 43560.057264 square feet (ft2, sq ft)
1 ac= 0.404686 square hectometers (hm2, sq hm)
1 ac= 6272645.54529 square inches (in2, sq in)
1 ac= 0.00404686 square kilometers (km2, sq km)
1 ac= 0.000131097287595 square leagues NAUTICAL (sq leag [nautical])
1 ac= 0.000173610571881 square leagues US STATUTE (sq leag [US statute])
1 ac= 99999.6886485 square links GUNTER SURVEY (sq li [survey])
1 ac= 43559.8640877 square links RAMDEN ENGINEER (sq li [engineer])
1 ac= 4046.86 square meters (m2, sq m)
1 ac= 4.04686E+15 square micrometers (μ2, sq μ)
1 ac= 0.00156250138152 square miles (mi2, sq mi)
1 ac= 4046860000 square millimeters (mm2, sq mm)
1 ac= 6.27264554529E+12 square mils (sq mil)
1 ac= 4.04686E+21 square nanometers (nm2, sq nm)
1 ac= 4.25027443681E-30 square parsecs (sq pc)
1 ac= 160.000141447 square perch (sq perch)
1 ac= 160.000141447 square poles (sq pole)
1 ac= 160.000141447 square rods (sq rod)
1 ac= 4840.00427877 square yards (yd2, sq yd)
1 ac= 1.493857512 stangs (stang)
1 ac= 2498.0617284 tatamis JAPAN (tatami)
1 ac= 0.733658448151 tonde land (tondeland)
1 ac= 4.34028161478E-5 townships (township)
1 ac= 1224.16964124 tsubo (tsubo)
1 ac= 0.819799854145 tunnlands (tunnland)
1 ac= 5791.67841405 varas castellanas cuads (varas-castellana)
1 ac= 643.519823784 varas conuqueras cuads (varas-conuquera)
1 ac= 0.0337238333333 virgates (virgate)