Area Conversions

Area Units

• Areas Primer

  • (based on m² but applies to other units)
  • To find the area of a square or rectangle multiply the width x height
    • Conversly to find the inverse use the square root function of a calculator (√)
    • Therefore :-
    • 1 m² would be an square 1km on each side (1 x 1 = 1)
    • 9 m² could be an square 3km on each side (√9 = 3 or 3 x 3 = 9) or a rectangle 18m long and 0.5m high (18 x 0.5 = 9)
    • See Area Calculator - Square

• Metric - used in most of the world

  • km² - Square Kilometre
  • ha - Hectares
  • m² - Square Meters

• Imperial - used mainly in the US

  • mi² - Square Miles
  • ac - Acres
    • Mainly used in the US and some other current/former Commonwealth countries. Also frequently used informally in the UK in the farming and property industries
    • In the US the international acre (0.40468564224 ha) and the US survey acre (0.404687261) are in use but the difference is very small
    • 1 acre = 43,560 ft²
  • ft² - Square Feet