Acre to Square Kilometer Converter

Convert acres to square kilometers instantly with our accurate and easy-to-use conversion tool.

ac
Result
0km²

Square Kilometer

Conversion Formula

Square Kilometer = Acre × 0.004047

Where:

  • ac = Acre
  • km² = Square Kilometer

About Acre

The acre (ac) is a unit of areain the imperial system of measurement.

About Square Kilometer

The square kilometer (km²) is a unit of areain the metric system of measurement.

How to Convert Acre to Square Kilometer

To convert from acres to square kilometers, use our converter above. Simply enter the value in acresand get instant results in square kilometers.

Quick Reference:

  • 1 ac = 0.004047 km²
  • 1 km² = 247.105163 ac

Common Acre to Square Kilometer Conversions

1 ac
= 0.00 km²
5 ac
= 0.02 km²
10 ac
= 0.04 km²
25 ac
= 0.10 km²
50 ac
= 0.20 km²
100 ac
= 0.40 km²

Conversion Reference Table

Acre (ac)Square Kilometer (km²)
10.004
20.0081
30.0121
40.0162
50.0202
100.0405
150.0607
200.0809
250.1012
500.2023
750.3035
1000.4047
2501.0117
5002.0234
1,0004.0469

Quick reference table showing common acres to square kilometers conversions.

Real-World Area Conversions

🏠

Real Estate and Housing

Property listings show square footage (US) or square meters (international). A typical 3-bedroom house is 1,500-2,000 sq ft (139-186 m²).

🌾

Land and Agriculture

Farmland is measured in acres (US) or hectares (metric). A football field is about 1.32 acres or 0.53 hectares. Large farms span hundreds or thousands of acres.

🏗️

Flooring and Carpeting

Calculating how much flooring material to buy for rooms. Carpet is sold by square yard, while tile and hardwood use square feet or square meters.

🎨

Painting and Wall Coverage

Paint coverage is specified per gallon (350-400 sq ft) or per liter (10-12 m²). Converting room wall areas helps estimate paint quantities needed.

🧵

Fabric and Textiles

Fabric is sold by the yard (linear) but coverage depends on width. Quilting, upholstery, and sewing projects require area calculations in square inches or square meters.

Parks and Recreation

City parks, golf courses, and sports facilities measure areas in acres or hectares. A standard soccer field is about 1.76 acres (0.71 hectares).

Area Conversion FAQs