Area Converter
Convert areas between square feet, acres, square metres, hectares and other units.
Runs in your browser. Nothing you enter is uploaded.
01How to use the Area Converter
- 01Type the area you want to convert.
- 02Choose the unit it is in.
- 03Read the area in every other unit.
02Conversion factors
All conversions go through square metres: 1 ft² = 0.09290304 m² 1 ha = 10,000 m² 1 yd² = 0.83612736 m² 1 km² = 1,000,000 m² 1 acre = 43,560 ft² = 4,046.8564224 m² 1 mi² = 640 acres
03Examples
1 acre = 43,560 square feet = 0.4047 hectares.
A 2,000 ft² home is 185.8 m².
1 square mile = 640 acres = 2.59 km².
04Frequently asked questions
How big is an acre?
An acre is 43,560 square feet, roughly three-quarters of an American football field without the end zones.
Why are square units not just the length factor?
Area factors are the length factor squared. One foot is 0.3048 m, so one square foot is 0.3048² = 0.09290304 m².
Which acre is used?
The international acre. The US survey acre differs by about 4 parts per million and was retired in 2022.