Convert hectares to square kilometers instantly.
Definition: A hectare (symbol: ha) is a metric unit of area equal to exactly 10,000 square meters, or a square measuring 100 meters by 100 meters.
History/origin: The hectare was introduced with the metric system as a practical larger land unit derived from the are. It became standard for agriculture and land management in metric countries.
Current use: Hectares are used around the world for farms, forests, parks, vineyards, and large development sites.
Definition: The square kilometer covers a large metric area: one kilometer by one kilometer. Since each side is 1,000 meters, one km² contains 1,000,000 m².
History/origin: Large-scale mapping and public statistics needed a unit bigger than hectares or square meters, so km² became the common metric choice for regions and natural features.
Current use: Km² appears in geography, census tables, environmental reports, park descriptions, city profiles, and comparisons of islands, watersheds, forests, and countries.
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