Area Converter
Convert square meters, feet, acres and hectares with exact factors — the square-law is handled for you, no mental math.
| Reference | Exact value |
|---|---|
| 1 hectare | 10,000 m² |
| 1 acre | 4,046.8564224 m² |
| 1 ft² | 0.09290304 m² |
| 1 km² | 1,000,000 m² |
How to use
- Type an area and pick the from/to units.
- The result updates live as you type.
- Hit ⇅ to swap units and invert the conversion.
Frequently asked questions
Which area units are supported?
Ten: square millimeter, centimeter, meter, kilometer, hectare, acre, square inch, foot, yard and square mile. Squared units scale by the square of the length factor — 1 m² is 10,000 cm², not 100.
How big is an acre exactly?
One acre is exactly 4,046.8564224 m² — defined as 1 chain × 1 furlong (66 ft × 660 ft), or 43,560 square feet. A hectare (10,000 m²) is about 2.471 acres.
Why did my result get smaller instead of bigger?
Converting to a smaller unit makes the number bigger, and vice versa. If it moved the wrong way, your from/to units are probably swapped — press ⇅ to flip them.
What is the difference between area converter and area calculator?
The converter changes units of a known area (m² to ft²). The area calculator derives an area from shape dimensions — like a circle’s radius or a trapezoid’s two bases. Use the converter for units, the calculator for shapes.
How precise are the results?
All factors are exact by definition (e.g. 1 in² = 0.00064516 m²), and results display 6 significant digits. The underlying math uses full double precision before rounding.