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To convert from Are (a) to Acre (ac), use the following formula:
With is the ratio between the base units Square Foot (ft2) and Square Meter (m2).
Let's convert 5 Are (a) to Acre (ac).
Using the formula:
Therefore, 5 Are (a) is equal to Acre (ac).
Here are some quick reference conversions from Are (a) to Acre (ac):
| Ares | Acres |
|---|---|
| 0.000001 a | ac |
| 0.001 a | ac |
| 0.1 a | ac |
| 1 a | ac |
| 2 a | ac |
| 3 a | ac |
| 4 a | ac |
| 5 a | ac |
| 6 a | ac |
| 7 a | ac |
| 8 a | ac |
| 9 a | ac |
| 10 a | ac |
| 20 a | ac |
| 30 a | ac |
| 40 a | ac |
| 50 a | ac |
| 100 a | ac |
| 1000 a | ac |
| 10000 a | ac |
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:
An acre (ac) is a common unit of area used to measure land in the United States and the United Kingdom.
It is equal to exactly 43,560 square feet.
Because it can be hard to picture that size, this guide breaks down the acre's origins, dimensions, and how it compares to other units.
The acre has deep roots in agriculture. Historically, it was defined as the amount of land that one person with a single ox could plow in one day.
This practical, work-based unit was measured as an area one "furlong" long (660 feet) by one "chain" wide (66 feet).
This origin explains why the acre became a standard for land measurement long before modern units were adopted.
Many people ask about the dimensions of an acre, but because it's a measure of area, it has no required shape or specific length.
While it equals 43,560 square feet, it doesn't have to be a perfect square. An acre can be a long rectangle, an L-shape, or even a circle—as long as the total area adds up.
To help you visualize an acre, imagine a standard American football field, including the end zones. One football field is about 1.32 acres, which means a single acre would cover about three-quarters of it.
While the acre is standard in the US, most of the world uses the hectare, a metric unit of land measurement.
This difference is crucial for anyone working in international real estate, agriculture, or science.
Here's a simple acre to hectare conversion: