Area Converter
Convert between area units instantly: mm², cm², m², km², hectares, in², ft², yd², acres, and mi². Free, 100% in your browser.
Reference
How does area conversion work?
Area conversion uses fixed ratios between units. This tool converts through square meters (m²) as the base unit. Area units are the squares of their linear counterparts: 1 ft² = (0.3048 m)² = 0.0929 m², 1 acre = 43,560 ft² = 4,046.86 m². The hectare (10,000 m²) is the standard metric land measurement unit, while acres are used in the US, UK, and other countries.
Unit reference
Metric: mm², cm², m², km², hectare (ha) = 10,000 m² = 0.01 km². Imperial/US: in² = 6.4516 cm², ft² = 929.03 cm², yd² = 0.8361 m², acre (ac) = 4,046.86 m² = 43,560 ft², mi² = 2.59 km². Relationships: 1 km² = 100 hectares = 247.1 acres. 1 mi² = 640 acres.
Common use cases
Real estate — convert between square feet and square meters for property listings. Agriculture — convert between acres and hectares for farmland measurements. Construction — calculate material needs using consistent area units. Geography — compare country or city sizes using km² or mi². Interior design — convert room dimensions between metric and imperial systems.
Privacy
All calculations run 100% in your browser. No data is sent to any server.