Convert Square Kilometers to Square Miles (km² to mi²)
Instantly convert square kilometers to square miles with this free online converter. Type a value below and the result updates in real time. All calculations run in your browser, nothing is sent to a server.
Square Kilometers to Square Miles Formula
mi² = km² x 0.386102175
Multiply the square kilometers value by 0.386102175 to get square miles.
Common Square Kilometers to Square Miles Conversions
| Square Kilometers (km²) | Square Miles (mi²) |
|---|---|
| 0.1 km² | 0.03861 mi² |
| 0.25 km² | 0.096526 mi² |
| 0.5 km² | 0.193051 mi² |
| 1 km² | 0.386102 mi² |
| 2 km² | 0.772204 mi² |
| 5 km² | 1.930511 mi² |
| 10 km² | 3.861022 mi² |
| 25 km² | 9.652554 mi² |
| 50 km² | 19.305109 mi² |
| 100 km² | 38.610217 mi² |
How to Convert Square Kilometers to Square Miles
- Enter the square kilometers value in the input field above.
- The square miles result appears instantly as you type.
- Click the copy button to copy the result to your clipboard.
- To convert in the other direction, click the Swap button or visit the Square Miles to Square Kilometers converter.
Frequently Asked Questions
How many square miles are in one square kilometer?
One square kilometer equals 0.386102 mi². Use the converter above for any value.
What is the formula to convert km² to mi²?
The formula is: mi² = km² x 0.386102175. Multiply the square kilometers value by 0.386102175 to get square miles.
How do I convert square miles back to square kilometers?
Use our reverse converter: Square Miles to Square Kilometers. You can also click the "Swap" button above the converter.
Is this converter accurate?
Yes. This converter uses the standard conversion factor and handles up to 8 decimal places of precision. All calculations run instantly in your browser with no rounding shortcuts.
Do I need to sign up to use this converter?
No. This converter is completely free with no signup, no account, and no usage limits. Your data never leaves your browser.
About This Tool
- Tool
- FreeToolPark Square Kilometers to Square Miles Converter
- Type
- Free online tool, no signup required
- Domain Expertise
- Unit conversion, measurement systems, data format conversion
- Privacy
- 100% client-side, no data stored
- Description
- Free square kilometers to square miles converter. Instantly convert km² to mi² with a reference table of common values. No signup, runs in your browser.
Cite This Tool
FreeToolPark. "Square Kilometers to Square Miles Converter." FreeToolPark, 2026, www.freetoolpark.com/tools/convert/sqkm-to-sqmi. Accessed April 14, 2026.