The **square kilometer**, often abbreviated as **"km²**", is a unit of area and represents an area of 1,000,000 square meters, which corresponds to a square with a side length of 1,000 meters.

## Calculator

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**Use calculator:**

- Select the area measure into which you want to convert km².
- Enter the number of square kilometers in the calculator.
- Click on "generate" to get the result.

## Use of the square kilometer:

**Geography**: the square kilometer is often used to describe land areas of countries, regions or cities.**Urban planning**: In the development and planning of large urban areas, parks or industrial zones, the area can be expressed in square kilometers.**Natural sciences**: When studying large natural areas such as lakes, deserts or forest areas, the unit square kilometer is often used.**Statistics**: In various statistical reports, especially those relating to population density, area is often expressed in square kilometers.

## Conversion to other area units:

**Hectare (ha)**: One square kilometer is equal to 100 hectares.**Ar**: One square kilometer equals 10,000 ares.**Square meter (m²)**: One square kilometer equals 1,000,000 m².**Square decimeter (dm²)**: One square kilometer equals 10,000,000,000 dm².**Square centimeter (cm²)**: One square kilometer equals 10,000,000,000,000 cm².**Square millimeter (mm²)**: One square kilometer equals 1,000,000,000,000,000 mm².

The square kilometer is a central unit for measuring very large areas. Due to its size, it is often used in contexts involving areas the size of countries or regions, such as in geography or in various scientific disciplines. The clear relationship of the square kilometer to other area units, especially the square meter, makes its conversion and understanding simple and straightforward

## Surfaces

- Acre
- Ar
- Hectare
- Hectares in square kilometers
- Square centimeter
- Square centimeters in square meters
- Square decimeter
- Square feet
- Square inch
- Square kilometer
- Square meter
- Square meters in ar
- Square meters in hectares
- Square meters in square kilometers
- Square mile
- Square millimeter
- Square millimeters in square centimeters
- Square yard

Author: Daniel Herndler

On this website, calculations, formulas and sample calculations with simple explanations are provided online free of charge by the author.