Area converter
Convert an existing area between square units, acres and hectares. Edit either value to update the other.
Both values are editable. Changing a unit keeps the same quantity.
Area uses square units: a square foot is 0.3048 × 0.3048 square metres. Acres here use the international foot.
Have length and width instead? Use the area calculator to calculate rectangles and L-shapes.
Conversion factors
- 1 square foot = 0.09290304 square metres
- 1 square yard = 9 square feet
- 1 acre = 43,560 square feet
- 1 hectare = 10,000 square metres
Converted values display up to 12 significant digits. Unit changes use the full stored quantity.
Reference: NIST unit conversion tables.