Square Kilometers to Square Miles converter
Free online square kilometers to square miles converter. Convert km2 to mi2 instantly in your browser. 100% client-side, no uploads, no account required.
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Formula
Square Miles = Square Kilometers × conversion factor
See also
Frequently asked questions
How do I convert square kilometers to square miles?
Use the calculator on this page. Enter any value in square kilometers and the equivalent in square miles is computed instantly. The conversion uses the exact factor: 1 KM2 = MI2 × factor. The full formula is shown in the "Formula" section above.
Is the square kilometers to square miles conversion exact?
Yes, the conversion is computed with full floating-point precision and rounded to 10 significant digits by default. All math runs in your browser — your input is never uploaded, never stored, and never logged. The result is reproducible and matches standard reference values.
Can I convert in batch?
Yes. The Unit Converter on this site has a batch mode: paste one value per line and click "Convert Batch" to get every result in one go. The batch output is plain text you can copy.