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tool.area-unit-converter Calculator
Converts between square metres, square feet, square yards, acres, hectares, and square kilometres. Acres dominate US land measurement; hectares are used in most of the rest of the world — a 1% conversion error on a land purchase is significant.
Inputs
Value
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
From Unit
Reference formula or conversion factor shown for context.
Results
square meters (m²)
Reference formula or conversion factor shown for context.
square km (km²)
Reference formula or conversion factor shown for context.
square feet (ft²)
Reference formula or conversion factor shown for context.
acres
Reference formula or conversion factor shown for context.
hectares (ha)
Reference formula or conversion factor shown for context.
square miles
Reference formula or conversion factor shown for context.