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To convert from Are (a) to Square Mile (mi2), 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 Square Mile (mi2).
Using the formula:
Therefore, 5 Are (a) is equal to Square Mile (mi2).
Here are some quick reference conversions from Are (a) to Square Mile (mi2):
| Ares | Square Miles |
|---|---|
| 0.000001 a | mi2 |
| 0.001 a | mi2 |
| 0.1 a | mi2 |
| 1 a | mi2 |
| 2 a | mi2 |
| 3 a | mi2 |
| 4 a | mi2 |
| 5 a | mi2 |
| 6 a | mi2 |
| 7 a | mi2 |
| 8 a | mi2 |
| 9 a | mi2 |
| 10 a | mi2 |
| 20 a | mi2 |
| 30 a | mi2 |
| 40 a | mi2 |
| 50 a | mi2 |
| 100 a | mi2 |
| 1000 a | mi2 |
| 10000 a | mi2 |
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 mile (mi2), with its plural form being square miles, is an imperial unit of area equal to 27,878,400 square feet (ft2).
The "Square Mile" is the famous nickname for the City of London, the historic heart and central financial district of London, England.
This nickname comes from its compact geographical area of just 1.12 square miles (2.90 km2).
Despite its small size, it remains a global hub for finance and business, home to landmarks like the Bank of England and the London Stock Exchange.
Converting square miles to other units is essential for comparing land areas globally.
One square mile is equivalent to:
This is especially useful when comparing data from countries that use the imperial system (like the United States) with those that use the metric system.
In the United States, the square mile is a fundamental unit in the Public Land Survey System (PLSS).
This system, used since 1785 to survey and sell land, is based on a grid. Here's how it works: