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Single conversion
To convert from Acre (ac) to Square Kilometer (km2), use the following formula:
With is the ratio between the base units Square Meter (m2) and Square Foot (ft2).
Let's convert 5 Acre (ac) to Square Kilometer (km2).
Using the formula:
Therefore, 5 Acre (ac) is equal to Square Kilometer (km2).
Here are some quick reference conversions from Acre (ac) to Square Kilometer (km2):
| Acres | Square Kilometers |
|---|---|
| 0.000001 ac | km2 |
| 0.001 ac | km2 |
| 0.1 ac | km2 |
| 1 ac | km2 |
| 2 ac | km2 |
| 3 ac | km2 |
| 4 ac | km2 |
| 5 ac | km2 |
| 6 ac | km2 |
| 7 ac | km2 |
| 8 ac | km2 |
| 9 ac | km2 |
| 10 ac | km2 |
| 20 ac | km2 |
| 30 ac | km2 |
| 40 ac | km2 |
| 50 ac | km2 |
| 100 ac | km2 |
| 1000 ac | km2 |
| 10000 ac | km2 |
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:
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.