Convert Acre (ac) to Quilômetro² (km²)
Use our interactive area calculator to convert any value in real time, in both directions.
About the Acre → Quilômetro² conversion
Conversions of area are essential in many everyday and technical contexts. Using consistent units and accurate factors ensures precise results.
The exact factor between Acre and Quilômetro² is 0.00404686. This means that 1 ac equals 0.00404686 km². To convert any value, just multiply. For the reverse direction, divide.
Formula
Conversion table
| Acre (ac) | Quilômetro² (km²) |
|---|---|
| 1 | 0.004 |
| 2 | 0.0081 |
| 5 | 0.0202 |
| 10 | 0.0405 |
| 25 | 0.1012 |
| 50 | 0.2023 |
| 100 | 0.4047 |
| 250 | 1.0117 |
| 500 | 2.0234 |
| 1000 | 4.0469 |
Reverse conversion
1 km² = 247.10538147 ac
Frequently asked questions
How do I convert Acre to Quilômetro²?
Multiply the value in ac by the factor 0.00404686. That is, 1 ac = 0.00404686 km². For the reverse conversion, use the factor 247.10538147.
What is the difference between Acre and Quilômetro²?
Both measure area, but on different scales. Acre is used in some contexts while Quilômetro² in others. To compare, always use the conversion factor: 1 ac = 0.00404686 km².
Are the factors used official?
Yes. The conversion factors come from the International System of Units (SI) and recognized international standards (NIST, BIPM). The result is accurate for technical, scientific, and commercial use.
Can I print this page?
Yes. The page is static and prints well in any browser. The table of common values is useful as a printed reference for workshops, kitchens, and classrooms.