Square Kilometer to Acre Converter
Convert square kilometers to acres (km² to acre) instantly with this free online area converter. Enter any value in the Square Kilometer field and get the equivalent in Acre immediately. This converter handles any quantity — from tiny fractions to large numbers — with full precision. No signup, no ads in the widget, and the conversion runs entirely in your browser for instant results.
The conversion factor is exact: 1 km² = 247.105163 acre. To convert square kilometers to acres, multiply your Square Kilometer value by 247.105163. For example, 10 km² = 2471.05163 acre. You can also reverse the calculation: 1 acre = 0.00404686 km².
Quick conversion table
| Square Kilometer (km²) | Acre (acre) |
|---|---|
| 1 km² | 247.105163 acre |
| 5 km² | 1235.525815 acre |
| 10 km² | 2471.05163 acre |
| 25 km² | 6177.629075 acre |
| 50 km² | 12355.25815 acre |
| 100 km² | 24710.5163 acre |
Use the swap button to reverse the direction, or choose a different unit from the dropdown menus to convert within the area category.
Formula
Square Kilometer to Acre conversion: 1 km² = 247.105163 acre acres = square kilometers × 247.105163 1 acre = 0.00404686 km² square kilometers = acres × 0.00404686
Example
Example: Convert 10 km² to acre: 10 km² × 247.105163 = 2471.05163 acre So, 10 km² is about 2471.05163 acre. To convert back, multiply by 0.00404686: 2471.05163 acre × 0.00404686 = 10 km².
How to Use
- Enter the value you want to convert in the Square Kilometer field
- The result in Acre appears instantly below
- Use the dropdown menus to change units if needed
- Click 'Swap Units' to reverse the conversion direction
- Copy the result or adjust the input for a new conversion
Frequently Asked Questions
How do I convert square kilometers to acres?
Enter the value in Square Kilometer (km²) in the 'From' field. The equivalent in Acre (acre) appears instantly in the 'To' field. The converter uses precise conversion factors and updates in real time as you type.
What is the formula to convert km² to acre?
1 km² = 247.105163 acre, so acres = square kilometers × 247.105163. To convert back, 1 acre = 0.00404686 km². The full formula and a worked example are shown on this page.
How many acres are in one Square Kilometer?
1 km² = 247.105163 acre.
Is this Square Kilometer to Acre converter free?
Yes, completely free with no signup, no limits, and no ads in the converter widget. You can convert as many values as you need. The tool runs entirely in your browser, so your data never leaves your device.
Can I convert acres back to square kilometers?
Yes. Click the 'Swap Units' button to reverse the direction. You can also use the dropdown menus to select any other area unit for either field.
How accurate is the km² to acre conversion?
The converter uses high-precision conversion factors (up to 8 decimal places). Results are displayed with up to 6 decimal places, with trailing zeros removed for readability. For scientific or engineering work, always verify with official standards.