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What's the difference between hectares and square kilometers?
1 km2 = 100 hectares =1100 million m2.

1 ha = 1 10,000 m2

Hectares are suitable for pasture, forest farm, manor and other places. A hectare is a unit of land area, which is often used to measure agricultural land area, forest area and industrial land area.

Square meters are mainly used for measuring the area of various flat objects in life, including the areas of rooms, doors, playgrounds, swimming pools and other objects. It is also used to solve and learn mathematical problems, and is also widely used in applied problem units of other disciplines.