1 acre: how many perches, roods, square miles, square yards, square inches, cm2, m2, km2, hectares?

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The acre is a unit of land measure in the imperial the U.S. customary systems, which dates back to the Middle Ages.

It was originally established as the area of land which could be ploughed with a pair of oxen in one day: 1 chain x 1 furlong (66x660 ft.)


 

1 acre =
                                           Imperial
4 roods
 160 sq rods (perches)
4 840 sq yds
6 273 000 sq in
0.001563 sq miles
                                            Metric
40 470 000cm2
4 047m2
0. 004047 km2
0.4047 hectares
40.47 ares


Did you know?

1 The acre was spelled æcer in the Old English and was used with reference to an unattended, open land. It is a cognate of the Greek word agros, which means ‘field’ (from the Proto-Indo-European root agro- of the same meaning).

2. A cultural reference to the acre can be found in an English folk ballad, Scarborough Fair:

‘Tell him to buy me an acre of land,
Parsley, sage, rosemary, and thyme;
Between the salt water and the sea sand,

Then he shall be a true love of mine’

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