Square Inch to Square Kilometer
1 Square Inch = 6.4516e-10 Square Kilometer
Conversion Formula
To convert Square Inch to Square Kilometer, multiply the value by 6.4516e-10.
Square Inch × 6.4516e-10 = Square Kilometer
Quick Reference
| in² | km² |
|---|---|
| 1 | 6.4516e-10 |
| 5 | 3.2258e-9 |
| 10 | 6.4516e-9 |
| 25 | 1.6129e-8 |
| 50 | 3.2258e-8 |
| 100 | 6.4516e-8 |
| 500 | 3.2258e-7 |
| 1000 | 6.4516e-7 |
What is Square Inch?
The square inch (symbol: in²) is a unit of area in the imperial and US customary systems.
It is defined as the area of a square with sides of one inch in length. One square inch is exactly 645.16 square millimeters.
Common Uses
Square inches are common in the United States and some other territories for measuring small surface areas, such as the area of a computer screen (for calculating DPI) or pressure (measured in PSI — pounds per square inch).
What is Square Kilometer?
The square kilometer (symbol: km²) is an SI unit of area.
It is defined as the area of a square with sides of one kilometer in length. One square kilometer is equal to 1,000,000 square meters or about 100 hectares.
Common Uses
The square kilometer is used to measure the area of large features, such as cities, islands, and entire countries. It is also common in geography and urban planning.
How many square kilometer are in a square inch?
There are 6.4516e-10 square kilometer in 1 square inch.