Area Converter
Convert instantly between metric and imperial area units, including hectares and acres.
How to Use
- Enter a value and choose the unit you're converting from.
- Choose the unit you want to convert to.
- The result updates instantly as you type — there's no Convert button to press.
- Use the swap button to reverse the conversion direction.
Formula
value_in_target_unit = value × (from_unit_to_m2 ÷ to_unit_to_m2). Every unit converts through square meters as the common base.
Worked Example
Convert 1 acre to square meters.
- 1 acre equals exactly 4,840 square yards.
- 1 square yard equals exactly 0.83612736 square meters (0.9144² m).
- 4,840 × 0.83612736 = 4,046.8564224 square meters.
Result: 4,046.8564 m²
Conversion Table
| Unit | Symbol |
|---|---|
| Square Millimeters | mm² |
| Square Centimeters | cm² |
| Square Meters | m² |
| Hectares | ha |
| Square Kilometers | km² |
| Square Inches | in² |
| Square Feet | ft² |
| Square Yards | yd² |
| Acres | ac |
About This Tool
What this tool does
Converts an area value between metric units (square millimeters through square kilometers, plus hectares) and imperial/US units (square inches through square yards, plus acres).
When to use it
Use it for land and property measurements (acres, hectares), room or material area (square feet, square meters), or any other area figure that needs to move between metric and imperial.
What the result means
The result is the equivalent area in the target unit, rounded to a readable number of decimal places without losing meaningful precision.
Assumptions & limitations
Every imperial factor is derived from the exact 1959 international length definitions squared (e.g. 1 ft² = 0.3048² m² exactly), not a separately rounded area constant. The hectare (10,000 m²) and the international acre (4,046.8564224 m²) are both exact by their own definitions.