Convert Acres to Square Kilometers

1 acre = 0.004047 square kilometers. Type any value below to convert ac to km².

From (ac)To (km²)0.004047

Formula

To convert acres to square kilometers, multiply the value by 0.004047.

Acres to Square Kilometers table

Acres (ac)	Square Kilometers (km²)
1 ac	0.004047 km²
2 ac	0.008094 km²
3 ac	0.012141 km²
5 ac	0.020234 km²
10 ac	0.040469 km²
20 ac	0.080937 km²
25 ac	0.101171 km²
50 ac	0.202343 km²
100 ac	0.404686 km²
250 ac	1.0117 km²
500 ac	2.0234 km²
1000 ac	4.0469 km²

Related area conversions

km² → ac cm² → m² cm² → km² cm² → ft² cm² → ac cm² → ha cm² → mi² m² → cm² m² → km² m² → ft² m² → ac m² → ha m² → mi² km² → cm² km² → m²

FAQ

1 acre = 0.004047 square kilometers.

To convert acres to square kilometers, multiply the value by 0.004047.