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To convert an area from ares (a) to square meters (m²), multiply by 100.
An are is by definition the area of a 10 m × 10 m square, so the factor is exactly 100. Divide by 100 to go back.
A rural land listing describes a parcel of 4.5 a, and the zoning rules are written in square meters:
The reverse: a 1,200 m² plot is 12 a.
| a | m² |
|---|---|
| 0.5 | 50 |
| 1 | 100 |
| 4.5 | 450 |
| 10 | 1,000 |
| 100 | 10,000 (= 1 ha) |
The are is the odd survivor of metric land measure: everyone knows its multiple, the hectare (100 a), and its submultiple, the centiare (0.01 a = exactly 1 m²), yet the base unit itself has faded from everyday speech. It persists in legal land records: French notarial deeds and cadastral extracts still write parcels as "1 ha 12 a 50 ca" — which is precisely 11,250 m² read off with no arithmetic beyond place value, since the ha/a/ca system is base-100 throughout. Swiss, Dutch, and several Eastern European registries use the same convention, and land in parts of South Asia is sold in ares outright. The conversion matters most when such records meet modern planning documents in m² — building-coverage ratios, minimum plot sizes, tax assessments. One trap: in informal listings the bare word "are" is sometimes locally repurposed for other plot units, so a figure that seems 100× off may be using a regional land measure rather than the metric are. When the document is official, though, ×100 is exact and the ladder is as tidy as metric gets.
How many ares are in one square meter? One Square Meter (m2) contains 0.01 Ares (a) — the inverse of the factor above. Multiplying by 100 takes you from ares to square meters; multiplying by 0.01 brings you back.
Put in words: one are equals 100 square meters, so the are is the larger unit of this pair. Converting between them never changes the amount of area being measured — only the size of the unit you count it in.
An are (a) is a metric unit of area, defined as 100 square meters (100 m2).
It is part of the same system as the more widely known hectare. The plural form is ares.
The hectare (ha), a much more common unit for measuring land, is derived directly from the are.
The prefix 'hecto-' means 100, so one hectare is equal to 100 ares.
Since one are is 100 square meters, a hectare is equivalent to 10,000 square meters (100 ares × 100 m2/are). This makes the hectare an ideal unit for measuring large areas, such as farms, forests, and parks.
The are was first established as part of the original French metric system in 1795. It was designed to serve as a standard base unit for measuring land, simplifying calculations required by older, traditional units.
While the hectare is more common today in agriculture and forestry, the are is still used in specific contexts, such as real estate and land registries in many countries, particularly throughout Europe.
The are serves as the foundation for other metric units of land area, making conversions straightforward. The most common related units include:
A Square Meter (m2) is a fundamental unit of area in the metric system.
But how big is a square meter, really? To get a good visual, imagine the top of a small square café table or two large bath towels laid side by side.
A square meter is a unit of area derived from the International System of Units (SI).
It is officially defined as the area of a square whose sides each measure exactly one meter.
This fundamental measurement is used globally for scientifically and legally describing two-dimensional space.
The square meter is the most common unit for measuring property and living space worldwide.
When you see the size of an apartment, house, or piece of land listed, it's typically in square meters (m2).
In construction and interior design, accurately calculating the quantity of materials is crucial for precise project planning and budgeting.
Common examples include figuring out quantities for:
Understanding how the square meter relates to other units is essential for international dealings and personal reference.
One square meter is equivalent to approximately 10.764 square feet, a unit commonly used in the United States.
For larger areas, such as farm land or parks, 10,000 square meters make up one hectare.
Here are some quick reference conversions from Are (a) to Square Meter (m2):
| Ares | Square Meters |
|---|---|
| 0.000001 a | 10-4 m2 |
| 0.001 a | 0.1 m2 |
| 0.1 a | 10 m2 |
| 1 a | 100 m2 |
| 2 a | 200 m2 |
| 3 a | 300 m2 |
| 4 a | 400 m2 |
| 5 a | 500 m2 |
| 6 a | 600 m2 |
| 7 a | 700 m2 |
| 8 a | 800 m2 |
| 9 a | 900 m2 |
| 10 a | 1000 m2 |
| 20 a | 2000 m2 |
| 30 a | 3000 m2 |
| 40 a | 4000 m2 |
| 50 a | 5000 m2 |
| 100 a | 104 m2 |
| 1000 a | 105 m2 |
| 10000 a | 106 m2 |
Engineering datasheets across Europe write Are to Square Meter several different ways. The calculation is the same in every one of them.
| Language | Written as | Unit names |
|---|---|---|
| French | a en m2 | are → mètre carré |
| Spanish | a a m2 | área → metro cuadrado |
| Dutch | a naar m2 | are → vierkante meter |
| German | a in m2 | Ar → Quadratmeter |
| Polish | a na m2 | ar → metr kwadratowy |