are (a)
1 are = 100 square metres
What is are?
An are is a metric unit of area equal to 100 square metres. While largely replaced by the hectare for most practical uses, it is still referenced in some European countries for measuring agricultural plots.
Notes: Metric land unit
Real-world uses
The are (100 m²) is used in some European countries for small land parcels and garden plots. In France, small agricultural plots and building lots may be listed in ares. It is most commonly encountered as the basis for the hectare (100 ares).
History
The are was defined in 1795 during the creation of the metric system in France as 100 square metres. Though the hectare eclipsed it in common usage, the are remains a legally recognized metric unit in several European countries.
Common mistakes
Confusing the are (a unit of area equal to 100 m²) with the word "are" (verb). Also, many people are unfamiliar with this unit and do not realize that 1 hectare = 100 ares.
When is this conversion used?
Converting are to square metre is useful in the area domain when comparing values across different measurement standards or applying formulas that require a specific unit.
How to convert are to square metre
To convert are to square metre, multiply the value by 100.
Conversion formula (from base unit)
x * 100.0
Measurement standards
The square metre is the SI derived unit of area. The hectare (10,000 m²) is accepted for use with the SI by the BIPM, particularly for land measurement, though it is not an SI unit itself.
Did you know?
Vatican City, the world's smallest independent state, covers just 0.44 km² (about 109 acres) — smaller than many golf courses. By contrast, Russia spans over 17.1 million km², nearly 39 million times larger.
| ares | square metres |
|---|---|
| 0.1 | 10 |
| 0.5 | 50 |
| 1 | 100 |
| 2 | 200 |
| 5 | 500 |
| 10 | 1,000 |
| 25 | 2,500 |
| 50 | 5,000 |
| 100 | 10,000 |
| 250 | 25,000 |
| 500 | 50,000 |
| 1,000 | 100,000 |
Common values
| ares | square metres | |
|---|---|---|
| A4 paper | 0.00062 ares | 0.062 square metres |
| Parking space | 0.125 ares | 12.5 square metres |
| Tennis court | 2.6087 ares | 260.87 square metres |
| Football field (soccer) | 71.4 ares | 7,140 square metres |
| Central Park, NYC | 34,100 ares | 3,410,000 square metres |
Full are conversion table
| Unit | Value | Factor |
|---|---|---|
| square metre | 1 a = 100 m² | × 100 |
| square kilometre | 1 a = 0.0001 km² | × 0.0001 |
| square foot | 1 a = 1,076.39104167 ft² | × 1,076.39104167 |
| square mile | 1 a = 0.00003861 mi² | × 0.00003861 |
| acre | 1 a = 0.02471054 ac | × 0.02471054 |
| hectare | 1 a = 0.01 ha | × 0.01 |
| square centimetre | 1 a = 1,000,000 cm² | × 1,000,000 |
| square inch | 1 a = 155,000.31000062 in² | × 155,000.31000062 |
| square yard | 1 a = 119.59900463 yd² | × 119.59900463 |