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Convert square kilometer to acre

1 km² = 247.1053815 ac

1 km² = 247 ac
1 km² in every area unit
square millimeter1,000,000,000,000 mm²
square centimeter10,000,000,000 cm²
square meter1,000,000 m²
hectare100 ha
square kilometer1 km²
square inch1,550,000,000 in²
square foot10,800,000 ft²
square yard1,200,000 yd²
acre247 ac
square mile0.386 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 km²247.10538 ac
2 km²494.21076 ac
3 km²741.31614 ac
5 km²1,235.5269 ac
10 km²2,471.0538 ac
15 km²3,706.5807 ac
20 km²4,942.1076 ac
25 km²6,177.6345 ac
50 km²12,355.269 ac
75 km²18,532.904 ac
100 km²24,710.538 ac
250 km²61,776.345 ac
500 km²123,552.69 ac
1000 km²247,105.38 ac
Other area conversions
mm² → accm² → acm² → ackm² → mm²km² → cm²km² → m²km² → in²km² → ft²

All area units →

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