Choose a Measurement
Select a measurement and convert between different units
Single conversion
To convert from Square Kilometer (km2) to Are (a), use the following formula:
Let's convert 5 Square Kilometer (km2) to Are (a).
Using the formula:
Therefore, 5 Square Kilometer (km2) is equal to Are (a).
Here are some quick reference conversions from Square Kilometer (km2) to Are (a):
| Square Kilometers | Ares |
|---|---|
| 0.000001 km2 | a |
| 0.001 km2 | a |
| 0.1 km2 | a |
| 1 km2 | a |
| 2 km2 | a |
| 3 km2 | a |
| 4 km2 | a |
| 5 km2 | a |
| 6 km2 | a |
| 7 km2 | a |
| 8 km2 | a |
| 9 km2 | a |
| 10 km2 | a |
| 20 km2 | a |
| 30 km2 | a |
| 40 km2 | a |
| 50 km2 | a |
| 100 km2 | a |
| 1000 km2 | a |
| 10000 km2 | a |
A square kilometer (km2) is a unit used to measure area in the metric system.
It represents a square that is one kilometer long on each side, which equals one million square meters (106 m2).
It can be challenging to visualize such a large area, so let's put it into perspective. A single square kilometer is equivalent to:
Due to its vast size, the square kilometer is a crucial unit for geographers, urban planners, and scientists when measuring large sections of land or water.
When it comes to measuring our planet, the square kilometer is the standard unit of choice.
The total surface area of Earth is a massive 510 million square kilometers.
This total area is broken down into:
These figures show why the square kilometer is crucial for scientists studying global climate patterns, mapping population density, and managing natural resources.
While much of the world uses the metric system, some countries (like the United States) use the imperial system, where large areas are measured in square miles.
A square kilometer is significantly smaller than a square mile. Here's the quick conversion:
Keeping this difference in mind is essential when comparing geographical data from different countries, whether you're examining the size of a national park or the area of a city.
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: