Area Unit Conversions
Theory:
There are many different units of area, such as 'square centimetres', 'hectares', 'square feet' and 'acres'.
To change the units of a quantity, it is multiplied or divided by some constant value, called a conversion factor.
This table lists ten different area units, and values that will help you change units of area measurements:
| Unit Name |
Unit Symbol |
Metric Equivalent |
Imperial Equivalent |
| Metric... |
|
|
|
|
square centimetre
|
cm² |
1 cm² = 100 mm² |
1 cm² = 0.1550 in² |
|
square metre
|
m² |
1 m² = 10,000 cm² |
1 m² = 1.1960 yd² |
|
hectare
|
ha |
1 ha = 10,000 m² |
1 ha = 2.4711 acres |
|
square kilometre
|
km² |
1 km² = 100 ha |
1 km² = 0.3861 mile² |
| Imperial... |
Unit Symbol |
Imperial Equivalent |
Metric Equivalent |
| square inch |
in² |
|
1 in² = 6.4516 cm² |
| square foot |
ft² |
1 ft² = 144 in² |
1 ft² = 0.0929 m² |
| square yard |
yd² |
1 yd² = 9 ft² |
1 yd² = 0.8361 m² |
| acre |
acre |
1 acre = 4840 yd² |
1 acre = 4046.9 m² |
| square mile |
mile² |
1 mile² = 640 acres |
1 mile² = 2.59 km² |
This is how you can change the units of an area measurement:
If possible, find an equation in the table that contains both the units you are converting from, and the units you are converting to.
Note: There are many other old units of land area, such as the South Asian 'bigha' (~.33 acre), the English 'bovate' (~15 ac.) and 'hide' (about 120 ac.), the Dutch 'bunder' (now 1 hectare), the Spanish 'cabellaria' (about 40 ha.), the Irish 'colpa/collop' (~.6555 ha.) and acre (~1.6 English ac.), the Russian 'dessiatina' (1.0925 ha.), the Middle-Eastern 'dunum' (~.1 ha.), the North African 'feddan' (~.42 ha.), the old French 'journal' (~.3-.45 ha.), the Swedish 'tunnland' (~.493 ha.) and numerous others.
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