Convert square kilometer to acre
1 km² = 247.1053815 ac
1 km² = 247.11 ac
1 km² in every area unit
| microbarn | 1.0000e+40 μb |
| millibarn | 1.0000e+37 mb |
| barn | 1.0000e+34 b |
| square nanometer | 1.0000e+24 nm² |
| square micrometer | 1.0000e+18 μm² |
| circular mil | 1.9735e+15 cmil |
| thousand circular mils | 1,973,500,000,000 kcmil |
| square millimeter | 1,000,000,000,000 mm² |
| square centimeter | 10,000,000,000 cm² |
| square inch | 1,550,000,000 in² |
| square decimeter | 100,000,000 dm² |
| square foot | 10,764,000 ft² |
| square yard | 1,196,000 yd² |
| square meter | 1,000,000 m² |
| tsubo | 302,500 tsubo |
| square rod | 39,537 rd² |
| are | 10,000 a |
| square chain | 2,471.1 ch² |
| dunam | 1,000 dunam |
| rood | 988.42 rood |
| acre | 247.11 ac |
| hectare | 100 ha |
| square kilometer | 1 km² |
| square mile | 0.3861 mi² |
How the conversion works
Multiply by 247.1053815 to go from square kilometer to acre, or divide by it to go back. Every conversion on this site routes through the SI value (m²) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? acre to square kilometer — 1 ac = 0.004046856422 km².
square kilometer to acre — common values
| 1 km² | 247.10538 ac |
| 2 km² | 494.21076 ac |
| 3 km² | 741.31614 ac |
| 5 km² | 1,235.5269 ac |
| 10 km² | 2,471.0538 ac |
| 15 km² | 3,706.5807 ac |
| 20 km² | 4,942.1076 ac |
| 25 km² | 6,177.6345 ac |
| 50 km² | 12,355.269 ac |
| 75 km² | 18,532.904 ac |
| 100 km² | 24,710.538 ac |
| 250 km² | 61,776.345 ac |
| 500 km² | 123,552.69 ac |
| 1000 km² | 247,105.38 ac |