Area Converter
Convert between 10 area units, from square millimeters to acres and square miles, with live results and the exact formula shown for every pair.
How area conversion works
All units convert through square meters. Each unit has one fixed factor (1 acre = 4046.8564224 m2), so any pair converts in a single step: value x from-factor / to-factor.
Land vs floor units
Hectares and acres are the standard land units (1 hectare = 2.471 acres), while square feet and square meters dominate real estate floor areas. Square miles and square kilometers are used for cities, regions and countries.