Square kilometer to Square mile Converter
Convert square kilometers to square miles with this free area converter. The exact relationship used on this page is 1 square kilometer = 0.386102158542 square miles. Type any number — the result updates instantly, works on phones and desktops, and is ready to copy into homework, a spec sheet, or a shopping list.
Formula: Square mile = Square kilometer × 0.386102158542
How to convert square kilometers to square miles
- Enter the value in square kilometers in the converter.
- Read the equivalent amount in square miles.
- Use the swap link if you need square mile to square kilometer instead.
- Check the table for common values without typing.
Worked examples
- 1 km² = 0.3861021585 mi²
- 5 km² = 1.930510793 mi²
- 10 km² = 3.861021585 mi²
- 25 km² = 9.652553964 mi²
Conversion table
Common square kilometers values converted to square miles.
| km² | mi² |
|---|---|
| 1 | 0.3861021585 |
| 2 | 0.7722043171 |
| 3 | 1.158306476 |
| 4 | 1.544408634 |
| 5 | 1.930510793 |
| 6 | 2.316612951 |
| 7 | 2.70271511 |
| 8 | 3.088817268 |
| 9 | 3.474919427 |
| 10 | 3.861021585 |
| 20 | 7.722043171 |
| 50 | 19.30510793 |
| 100 | 38.61021585 |
| 250 | 96.52553964 |
| 500 | 193.0510793 |
| 1,000 | 386.1021585 |
About this conversion
Square kilometer (km²) and Square mile (mi²) are both area units. Area converters help with flooring, land, real estate listings, and fabric. Bookmark this URL when you convert square kilometers to square miles often, then explore related pairs in the same category if you need a different target unit.
Need the other direction? Open the square mile to square kilometer converter.
FAQ
How many square miles are in 1 square kilometer?+
1 square kilometer equals 0.386102158542 square miles.
What is the formula to convert square kilometers to square miles?+
Square mile = Square kilometer × 0.386102158542
How do I convert square kilometers to square miles by hand?+
Multiply the square kilometer value by 0.386102158542. Example: 10 square kilometers × 0.386102158542 = 3.86102158542 square miles.
Is this km² to mi² converter accurate?+
Yes. Linear conversions use internationally agreed factors relative to SI. Temperature and inverse fuel units use the standard offset or reciprocal formulas, not a guessed scale factor.