Convert Acre to Square Kilometer
Enter a value in Acre to see it instantly in Square Kilometer, or use the reverse converter below.
Acre
Definition: A US customary and imperial unit historically based on the area a yoke of oxen could plow in a day.
Current use: Used in the US and UK for land and real estate.
Square Kilometer
Definition: The area of a square with 1-kilometer sides.
Current use: Used for city, country, and large geographic areas.
Acre to Square Kilometer Conversion Table
| Acre [ac] | Square Kilometer [km²] |
|---|---|
| 0.01 ac | 0.0000404686 km² |
| 0.1 ac | 0.0004046856 km² |
| 1 ac | 0.0040468564 km² |
| 2 ac | 0.0080937128 km² |
| 3 ac | 0.0121405693 km² |
| 5 ac | 0.0202342821 km² |
| 10 ac | 0.0404685642 km² |
| 20 ac | 0.0809371284 km² |
| 50 ac | 0.2023428211 km² |
| 100 ac | 0.4046856422 km² |
| 1000 ac | 4.0468564224 km² |
How to Convert Acre to Square Kilometer
1 km² = 247.1053814672 ac
Example: convert 1 ac to km²:
Square Kilometer to Acre Conversion Table
| Square Kilometer [km²] | Acre [ac] |
|---|---|
| 0.01 km² | 2.4710538147 ac |
| 0.1 km² | 24.7105381467 ac |
| 1 km² | 247.1053814672 ac |
| 2 km² | 494.2107629343 ac |
| 3 km² | 741.3161444015 ac |
| 5 km² | 1235.5269073358 ac |
| 10 km² | 2471.0538146717 ac |
| 20 km² | 4942.1076293433 ac |
| 50 km² | 12355.2690733583 ac |
| 100 km² | 24710.5381467165 ac |
| 1000 km² | 247105.3814671653 ac |
Quick Estimate
For a quick mental estimate, 1 ac is about 0.004 km², and 1 km² is about 247 ac. Use the exact calculator above when accuracy matters, such as for money, medicine, engineering or anything you will buy or sell.
Frequently Asked Questions
How many Square Kilometer are in 1 Acre?
1 Acre (ac) equals 0.0040468564 Square Kilometer (km²).
How do I convert Acre to Square Kilometer?
Multiply the value in ac by 0.0040468564 to get km². To go the other way, multiply km² by 247.1053814672.
What is 10 Acre in Square Kilometer?
10 ac = 0.0404685642 km².
What is 100 Acre in Square Kilometer?
100 ac = 0.4046856422 km².
What is a Acre?
A US customary and imperial unit historically based on the area a yoke of oxen could plow in a day. Used in the US and UK for land and real estate.
What is a Square Kilometer?
The area of a square with 1-kilometer sides. Used for city, country, and large geographic areas.
How many Acre are in 1 Square Kilometer?
1 Square Kilometer (km²) equals 247.1053814672 Acre (ac).
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Convert Acre to Other Area Units
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Convert Other Area Units to Square Kilometer
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