Hectares to Square Miles Converter

To convert a measurement in hectares to square miles, multiply the value by 0.003861021585. The conversion factor comes from the relationship between both units and the square meter.

For example, to convert 5 ha to square miles: 5 × 0.003861021585 = 0.019305107927 mi².

A hectare is a metric unit of area equal to 10,000 square meters, or a square 100 meters on each side, about 2.471 acres. Coined in 1795 from the Greek 'hekaton' (hundred) and 'are', the hectare is the standard unit for land area in agriculture and forestry across most of the world, filling the gap between the square meter and the square kilometer.

Common uses of hectares include: Farmland and agricultural plot size; Forestry and conservation areas; Real estate land parcels; Parks and land-use planning.

A square mile is an imperial and US customary unit of area equal to the area of a square one mile on each side, or 640 acres, about 2.59 square kilometers. The square mile is the traditional unit for large land areas in the US and UK. In the US Public Land Survey System, a 'section' is exactly one square mile, the building block of the township grid.

Common uses of square miles include: Areas of US and UK cities and counties; Land survey sections (640 acres); Geographic and census area reporting; Property and ranch land in imperial countries.

Here are some common values converted:

1 ha = 0.003861021585 mi² 5 ha = 0.019305107927 mi² 10 ha = 0.038610215854 mi² 50 ha = 0.193051079271 mi² 100 ha = 0.386102158542 mi²