Area
Square metres, feet, acres and hectares.
About Area
Convert an area between square metres, square kilometres, square feet, square yards, acres and hectares. Enter one value and every other unit is shown at once.
How to use
- Type a value and pick its unit. The default is 1 square kilometre.
- Every other unit updates as you type; each row has its own Copy button, and Copy on the panel copies the whole table.
- Results are rounded to eight decimal places and formatted for your locale.
Conversion factors
All units convert through square metres:
| Unit | Square metres |
|---|---|
| square foot | 0.09290304 |
| square yard | 0.83612736 |
| acre | 4 046.8564224 |
| hectare | 10 000 |
| square kilometre | 1 000 000 |
These are the exact international definitions (the square foot is 0.3048² m²; the international acre is 43,560 square feet). The value must be greater than zero.
Example
1 acre → 4 046.8564224 m² · 0.40468564 ha · 43 560 ft² · 4 840 yd²
Privacy
Runs in the browser. No request is made, and nothing is stored.
Frequently asked questions
- How many acres are in a hectare?
- About 2.4711 acres. A hectare is exactly 10,000 square metres and an international acre is 4,046.8564224 square metres.
- How many square feet are in an acre?
- Exactly 43,560 square feet, or 4,840 square yards. The acre was originally a furlong (660 ft) by a chain (66 ft).
- How do I convert square metres to square feet?
- Multiply by 10.7639. One square foot is exactly 0.09290304 square metres, so 100 m² is about 1,076.39 ft².
- How big is a square kilometre in acres?
- About 247.1 acres, or exactly 100 hectares. A square mile, by comparison, is 640 acres (about 2.59 km²).