Education • 4 min read

Understanding Land Measurement Units: From Square Feet to Square Kilometers

A comprehensive guide to understanding and converting between all major international units of land measurement.

M
Marcus Vance, Land Surveyor

Comprehensive Overview of Area Units

Understanding how land is measured requires familiarity with both traditional customary units and modern metric measurements.

The Land Unit Hierarchy

  1. Square Meter (m²): The fundamental metric unit of area.
  2. Acre (ac): 43,560 square feet (4,046.86 m²).
  3. Hectare (ha): 10,000 m² or 2.47105 acres.
  4. Square Kilometer (km²): 100 hectares or 247.105 acres.
  5. Square Mile (sq mi): 640 acres or 258.999 hectares.

Conversion Reference Cheat Sheet

  • 1 ha = 10,000 m² = 2.47105 ac
  • 1 ac = 4,046.86 m² = 0.404686 ha
  • 1 sq mi = 640 ac = 259 ha
  • 1 sq km = 100 ha = 247.1 ac

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