Square Miles to Square Kilometers Converter
Convert square miles to square kilometers and vice versa with our free area conversion calculator. Quick, accurate, and easy to use.
Step 1: Input Area
About Square Miles and Square Kilometers
A square mile is a unit of area in the imperial and US customary systems, equal to the area of a square with sides of one mile. A square kilometer is a metric unit of area equal to the area of a square with sides of one kilometer.
Step 2: Conversion Results
Conversion Formula
1 square mile = 2.58999 square kilometers
1 square kilometer = 0.386102 square miles
Area Conversion Details
Area Conversion Result
Area Size Comparison
| Area Size | Square Miles | Square Kilometers | Comparable Size |
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Real-World Area Examples
Understanding Area Measurements
Square miles are commonly used in the United States and United Kingdom for measuring large areas like cities, counties, and countries. Square kilometers are the standard metric unit for area measurement used worldwide.
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