The square inch (in²) is commonly used in the United States for small surface measurements. A standard post-it note is about 6 in², while a sheet of letter-sized paper is 93.5 in². This unit is prevalent in printing, crafts, and engineering drawings. The square kilometer (km²) measures large territories and geographic areas. Central Park in New York covers 3.41 km², while Paris occupies about 105 km². This unit is essential for urban planning, environmental studies, and country-size comparisons.
To convert between Square Inch (in²) and Square Kilometer (km²), use the following formulas:
1 Square Inch (in²) = 6.4516e-10 Square Kilometer (km²)
1 Square Kilometer (km²) = 1550003100.0062 Square Inch (in²)
1 in² = 1 * 6.4516e-10 km² = 6.4516e-10 km²
10 in² = 10 * 6.4516e-10 km² = 6.4515999999999995e-9 km²
50 in² = 50 * 6.4516e-10 km² = 3.2258e-8 km²
100 in² = 100 * 6.4516e-10 km² = 6.4516e-8 km²
500 in² = 500 * 6.4516e-10 km² = 3.2257999999999997e-7 km²
| Square Inch (in²) | Square Kilometer (km²) |
|---|---|
| 1 in² | 6.4516e-10 km² |
| 10 in² | 6.4515999999999995e-9 km² |
| 100 in² | 6.4516e-8 km² |
| 500 in² | 3.2257999999999997e-7 km² |
| 1000 in² | 6.451599999999999e-7 km² |