Square Kilometers to Ares converter (km² to a)
Convert Square Kilometers (km²) to Ares (a) with this free calculator. Type a value, press Convert, and the page applies the same factor shown in the formula below — no rounded shortcut, and nothing is stored on a server.
Ares to Square Kilometers (a to km²) ►
How to convert Square Kilometers to Ares
1 square kilometer (km²) is equal to 10,000 ares (a).
a = km² × 10,000
Multiply the area in square kilometers by 10,000:
Example: Convert 1 km² to ares:
a = 1 × 10,000 = 10,000 a
What is a Square Kilometers?
The Square Kilometers (km²) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
What is a Ares?
The Ares (a) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
This page converts area from Square Kilometers into Ares. One km² equals 10000 a.
Square Kilometers to Ares conversion table
Common km² values and the matching a result, calculated with the same factor as the widget. Highlight a nearby row if you want a quick check without entering a number.
| Square Kilometers (km²) | Ares (a) |
|---|---|
| 1 km² | 10000 a |
| 2 km² | 20000 a |
| 5 km² | 50000 a |
| 10 km² | 100000 a |
| 20 km² | 200000 a |
| 50 km² | 500000 a |
| 100 km² | 1000000 a |
How this calculator works
The form on this page is a Square Kilometers-to-Ares converter. After you enter a number, JavaScript multiplies or rearranges it with the published conversion factor and writes the a result in the output box. The step-by-step panel repeats the arithmetic so you can copy it into homework or a spreadsheet.
Reviewed by Hamsen, founder of GigaTables and a biology engineer. See the about page for how formulas are checked before a tool is published.
FAQ
How many a are in 1 km²?
1 km² = 10000 a.
How do I convert Square Kilometers to Ares?
Multiply the area in square kilometers by 10,000:
Is this km² to a converter free?
Yes. GigaTables calculators are free to use in a browser. You do not need an account, and the values you type are not uploaded.