Square km to Square Miles (km2 to mi2) Converter
1 km2 = 0.386102 square miles. Used for country areas, national parks and geographic regions.
Formula:1 km2 = 0.386102 mi2
⇄ Switch to Square Miles To Square KmSq. kilometer to Sq. mile — common values
1 km²0.386102 mi²
10 km²3.8610217 mi²
100 km²38.610217 mi²
1,000 km²386.10217 mi²
10,000 km²3,861.0217 mi²
100,000 km²38,610.2175 mi²
1,000,000 km²386,102.175 mi²
How to convert Square Km To Square Miles
To convert square km to square miles, use the formula: 1 km2 = 0.386102 mi2. Enter any value in the input field above and the result appears instantly. Click the ⇄ button or use the “Switch to Square Miles To Square Km” link to reverse the conversion.
All conversions use precise mathematical constants validated against international SI standards (NIST and ISO 80000) and are accurate to 8 significant figures.
Frequently Asked Questions
What is the formula to convert Square Km To Square Miles?
1 km2 = 0.386102 mi2. 1 km2 = 0.386102 square miles. Used for country areas, national parks and geographic regions.
Is this converter free?
Yes — completely free, no registration required. Works instantly in your browser.
How do I convert Square Miles To Square Km?
Use the Square Miles To Square Km converter or click the ⇄ switch button above.
More Area conversions
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