Acre to Square Kilometer Converter

Convert between acres and square kilometers for land measurement, real estate, and agricultural planning

Acre (ac)

1 acre = 0.00404686 km²

Square Kilometer (km²)

1 km² = 247.105 acres

Enter a value to see the conversion result

Land Area Reference

Acres	⇔	Square Kilometers
1 acre	⇔	0.00405 km²
10 acres	⇔	0.0405 km²
100 acres	⇔	0.405 km²
247 acres	⇔	1.0 km²
1,000 acres	⇔	4.047 km²
2,471 acres	⇔	10.0 km²

Property & Land Use

Residential Properties:
• House lot: 0.1-2 acres (0.0004-0.008 km²)
• Subdivision: 10-100 acres (0.04-0.4 km²)
• Estate property: 5-50 acres (0.02-0.2 km²)
• Rural homestead: 1-20 acres (0.004-0.08 km²)

Agricultural Land:
• Small farm: 10-100 acres (0.04-0.4 km²)
• Family farm: 100-500 acres (0.4-2.0 km²)
• Large farm: 500-2,000 acres (2.0-8.1 km²)
• Ranch: 1,000-10,000 acres (4.0-40.5 km²)

Commercial & Industrial:
• Shopping center: 10-50 acres (0.04-0.2 km²)
• Industrial park: 50-500 acres (0.2-2.0 km²)
• Airport: 500-5,000 acres (2.0-20.2 km²)
• City area: 5,000-50,000 acres (20-202 km²)

Area Units

Acre: 43,560 square feet
Square Kilometer: 1,000,000 m²
Conversion: 1 km² = 247.105 acres
Origin: Anglo-Saxon land measure

Land Planning Tips

Use acres for US property listings
Use km² for large-scale planning
Consider zoning regulations
Account for topography effects

Applications

Real Estate: Property valuation
Agriculture: Farm planning
Development: Land use planning
Conservation: Protected areas