Square km to Square Miles (km2 to mi2) Converter
How to convert Square Km To Square Miles
1 km2 = 0.386102 mi2.
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 to reverse the conversion direction.
All conversions use precise mathematical constants validated against international SI standards (NIST and ISO 80000), accurate to 8 significant figures.
Frequently Asked Questions
How many Square miles are in one Square kilometer?
1 km2 = 0.386102 mi2. 1 km2 = 0.386102 square miles. Used for country areas, national parks and geographic regions.
What is the formula to convert Square kilometer to Square mile?
1 km2 = 0.386102 mi2. Multiply the Square kilometer value by the conversion factor to get Square mile.
How do I convert Square Miles To Square Km?
Use the Square Miles To Square Km converter — formula: 1 mi2 = 2.58999 km2. Click the ⇄ switch button above for the reverse conversion.
Is this Square kilometer to Square mile converter free?
Yes — completely free, no registration required. Works instantly in your browser using precise mathematical constants validated against SI standards.