Virgin Islands. Republic of Ireland In the Republic of Ireland, the hectare is legally used under European units of measurement directives; however, the acre is still widely used, especially in agriculture. (This is the standard statute acre, the same as used in the UK, not the old Irish acre which was of a different size.) South Asia In India, residential plots are measured in square feet, while agricultural land is measured in acres. In Sri Lanka, the division of an acre into 160 perches or 4 roods is common. In Pakistan, residential plots is measured in (20 = 1 = 500 sq yards) and open/agriculture land measurement is in acres (8 = 1 acre or 4 = 1 acre) and (25 acres = 1 = 200 ), and . United Kingdom Its use as a primary unit for trade in the United Kingdom ceased to be permitted from 1 October 1995, due to the 1994 amendment of the Weights and Measures Act, where it was replaced by the hectare though its use as a supplementary unit continues to be permitted indefinitely. This was with exemption of Land registration, which records the sale and possession of land, in 2010 HM Land Registry ended its exemption. The measure is still used to communicate with the public, and informally (non-contract) by the farming and property industries. Equivalence to other units of area 1 international acre is equal to the following metric units: 0.40468564224 hectare (A square with 100 m sides has an area of 1 hectare.) 4,046.8564224 square metres (or a square with approximately 63.61 m sides) 1 United States survey acre is equal to: 0.404687261 hectare 4,046.87261 square metres (1 square kilometre is equal to 247.105 acres) 1 acre (both variants) is equal to the following customary units: 66 feet × 660 feet (43,560 square feet) 10 square chains (1 chain = 66 feet = 22 yards = 4 rods = 100 links) 1 acre is approximately 208.71 feet × 208.71 feet (a square) 4,840 square yards 43,560 square feet 160 perches. A perch is equal to a square rod (1 square rod is 0.00625 acre) 4 roods A furlong by a chain (furlong 220 yards, chain 22 yards) 40 rods by 4 rods, 160 rods2 (historically fencing was often sold in 40 rod lengths) (0.0015625) square mile (1 square mile is equal to 640 acres) Perhaps the easiest way for US