Convert square kilometers to acres
Square kilometer (km²) to acre (ac). One square kilometer equals 247.11 acres.
Formula
Square kilometer to acre conversion table
| Square kilometers | Acres | Acres | Square kilometers |
|---|---|---|---|
| 1 km² | 247.11 ac | 1 ac | 0.004047 km² |
| 2 km² | 494.21 ac | 2 ac | 0.008094 km² |
| 3 km² | 741.32 ac | 3 ac | 0.012141 km² |
| 5 km² | 1235.53 ac | 5 ac | 0.020234 km² |
| 10 km² | 2471.05 ac | 10 ac | 0.040469 km² |
| 20 km² | 4942.11 ac | 20 ac | 0.080937 km² |
| 50 km² | 12355.27 ac | 50 ac | 0.202343 km² |
| 100 km² | 24710.54 ac | 100 ac | 0.404686 km² |
| 500 km² | 123552.69 ac | 500 ac | 2.0234 km² |
| 1000 km² | 247105.38 ac | 1000 ac | 4.0469 km² |
To convert square kilometers to acres, multiply the number of square kilometers by 247.11. One square kilometer equals 247.11 acres, and one acre equals 0.004047 square kilometers, so the relationship is fixed and exact. As a worked example, 10 km² comes to 2471.05 ac. Enter your own figure in the converter above to get an instant answer, or use the swap button to flip the direction. This is a area conversion, and like every tool on UnitGlide it runs locally in your browser with no account or upload required. The table further down shows a range of common square kilometer values already worked out in acres, plus the reverse acre to square kilometer direction, which is handy for quick reference or double-checking a result by hand.
Frequently asked questions
How many acres are in a square kilometer?
One square kilometer equals 247.11 acres. The ratio is constant, so you can multiply any number of square kilometers by 247.11 to get acres.
What is the formula to convert square kilometers to acres?
Use acres = square kilometers × 247.11. UnitGlide applies this exact formula for every value, so results stay accurate across the whole range.
How do I convert acres back to square kilometers?
Go the other way by using one acre equals 0.004047 square kilometers. You can also press the swap button in the converter above to flip the direction in one click.
Is this square kilometer to acre converter accurate?
Yes. It uses internationally defined SI conversion factors, as maintained by the BIPM, and all math runs in your browser so nothing is rounded away on a server. For everyday use the displayed precision is more than enough.