Convert square km to square miles
Convert square kilometers to square miles by entering a value below.
How to Convert Square Kilometers to Square Miles
The square kilometer and square mile are both units of area. 1 square mile equals 2.5899881103 square kilometers. This means to convert square kilometers to square miles, you divide by 2.5899881103.
Formula
Step-by-Step Example
Convert 5 km² to square miles:
We need to convert square kilometers to square miles
Since 1 mi² = 2.5899881103 km², divide by 2.5899881103
5 ÷ 2.5899881103 = 1.9305107927
5 km² = 1.9305107927 mi²
Square Kilometer to Square Mile Conversion Table
Quick reference table for common square kilometer to square mile conversions. Click any value for detailed calculation.
| Square Kilometers (km²) | Square Miles (mi²) |
|---|---|
| 1 km² | 0.3861021585 mi² |
| 2 km² | 0.7722043171 mi² |
| 5 km² | 1.9305107927 mi² |
| 10 km² | 3.8610215854 mi² |
| 15 km² | 5.7915323781 mi² |
| 20 km² | 7.7220431708 mi² |
| 25 km² | 9.6525539636 mi² |
| 50 km² | 19.305107927 mi² |
| 100 km² | 38.610215854 mi² |
About These Units
Square Kilometer (km²)
A square kilometer (km²) equals 1,000,000 square meters, 100 hectares, or approximately 247.1 acres. Square kilometers measure country sizes, city areas, and large geographic regions. New York City covers about 783 km². One square mile equals 2.59 km².
Square Mile (mi²)
A square mile (mi² or sq mi) equals 640 acres, 2.59 square kilometers, or 27,878,400 square feet. Square miles measure city sizes, counties, and states in the US. Manhattan is about 23 square miles. One section of land (US survey) equals one square mile.
Frequently Asked Questions
How do I convert square kilometers to square miles?
To convert square kilometers to square miles, divide the value by 2.5899881103. For example, 10 km² = 3.8610215854 mi².
How many square miles are in 1 square kilometer?
1 square kilometer equals 0.3861021585 square miles.
What is the formula for square kilometers to square miles?
The formula is: mi² = km² ÷ 2.5899881103.