Square Kilometer to Are Converter
Convert Square Kilometer (km²) to Are (a) instantly. 1 km² = 10,000 a.
Area Converter
20 units available
1 km² = 10,000 a
Formula:
a = km² × 10,000With your value: 1 km² = 10,000 a
How big is that?
Everyday references on a logarithmic scale, all expressed in square kilometer so you can sanity-check the result.
Other Square Kilometer to Are conversions
Square Kilometer to Are Conversion Table
| Square Kilometer (km²) | Are (a) |
|---|---|
| 0.5 | 5,000 |
| 1 | 10,000 |
| 2 | 20,000 |
| 5 | 50,000 |
| 10 | 100,000 |
| 15 | 150,000 |
| 20 | 200,000 |
| 25 | 250,000 |
| 50 | 500,000 |
| 100 | 1,000,000 |
| 250 | 2,500,000 |
| 500 | 5,000,000 |
| 1000 | 10,000,000 |
Are to Square Kilometer Conversion Table
| Are (a) | Square Kilometer (km²) |
|---|---|
| 0.5 | 5.000000e-5 |
| 1 | 0.0001 |
| 2 | 0.0002 |
| 5 | 0.0005 |
| 10 | 0.001 |
| 15 | 0.0015 |
| 20 | 0.002 |
| 25 | 0.0025 |
| 50 | 0.005 |
| 100 | 0.01 |
| 250 | 0.025 |
| 500 | 0.05 |
| 1000 | 0.1 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Square Kilometer (km²)
Area
Derived from the square metre via the length definitions above.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Are (a)
Area
Derived from the square metre via the length definitions above.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Square Kilometer to Are
To convert from Square Kilometer (km²) to Are (a), multiply the value by 10,000.
Formula: a = km² × 10,000
Reverse: km² = a × 0.0001
Step-by-Step Example
- Start with your value in Square Kilometer. For example: 5 km²
- Multiply by the conversion factor: 5 x 10,000
- The result is: 50,000 a
About Square Kilometer
The square kilometer (km²) is a unit of area. One square kilometer equals 1.000000 × 10^+6 square metres. UnitConvertLab converts it against every other area unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: area calculations, engineering and science, education.
About Are
The are (a) is a unit of area. One are equals 100 square metres. UnitConvertLab converts it against every other area unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: area calculations, engineering and science, education.
Frequently Asked Questions
How many Are are in 1 Square Kilometer?
There are exactly 10,000 Are in 1 Square Kilometer. This means the conversion factor from Square Kilometer to Are is 10,000.
What is the formula to convert Square Kilometer to Are?
The formula to convert Square Kilometer to Are is: a = km² × 10,000. For example, to convert 10 Square Kilometer to Are, you would multiply 10 by 10,000.
What is a Square Kilometer?
The square kilometer (km²) is a unit of area. One square kilometer equals 1.000000 × 10^+6 square metres. UnitConvertLab converts it against every other area unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Are?
The are (a) is a unit of area. One are equals 100 square metres. UnitConvertLab converts it against every other area unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What are the common uses of Square Kilometer?
The Square Kilometer is commonly used in area calculations, engineering and science, education.
Related Area Conversions
Cite this page
UnitConvertLab. (2026). Square Kilometer to Are converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/sqkilometer-to-are