Common Converters

Convert Acres to Square Kilometers

Use our accurate converter to change acres into square kilometers. This tool is simple to use and works instantly.

How to Calculate

To change acres to square kilometers, you just need to know the conversion factor.

Rule: 1 Acres = 0.004046856 Square Kilometers

Acres to Square Kilometers
Pre-defined calculator for direct acres to square kilometers conversion.
Acres (ac)
0
Square Kilometers (km²)
Formula: 1 Acres = 0.00404686 Square

Unit Information

About Acres

Definition: An acre is a unit of land area used mostly in the USA and UK.

History: It was once the amount of land one team of oxen could plow in one day.

Where it is used: Standard unit for buying and selling property and land.

Acres to Square Kilometers Conversion Table

Acres [ac]Square Kilometers [km2]
0.01 ac0.0000404686 km2
0.1 ac0.0004046856 km2
1 ac0.004046856 km2
2 ac0.008093712 km2
3 ac0.012140568 km2
5 ac0.02023428 km2
10 ac0.04046856 km2
20 ac0.08093712 km2
50 ac0.2023428 km2
100 ac0.4046856 km2
1000 ac4.046856 km2

How to Convert Acres to Square Kilometers

Calculation: To convert acres to square kilometers, multiply the value by the conversion factor (0.004046856).

Example: convert 15 ac to km2:
15 ac = 15 × 0.004046856 km2 = 0.06070284 km2

Acres to All Area Units

Explore all available conversion pairs for acres to other professional area metrics.

All Unit Conversion Systems

Access our high-fidelity calculators for other measurement systems and engineering metrics.