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. The square millimeter (mm²) is used for precision measurements in engineering and manufacturing. It's ideal for measuring tiny surfaces like electronic components (a microSD card is about 150 mm²) or paper thickness (standard printer paper is ~62,370 mm² per sheet). This unit is essential in microelectronics and quality control.
To convert between Square Kilometer (km²) and Square Millimeter (mm²), use the following formulas:
1 Square Kilometer (km²) = 1000000000000 Square Millimeter (mm²)
1 Square Millimeter (mm²) = 1e-12 Square Kilometer (km²)
1 km² = 1 * 1000000000000 mm² = 1000000000000 mm²
5 km² = 5 * 1000000000000 mm² = 5000000000000 mm²
10 km² = 10 * 1000000000000 mm² = 10000000000000 mm²
100 km² = 100 * 1000000000000 mm² = 100000000000000 mm²
| Square Kilometer (km²) | Square Millimeter (mm²) |
|---|---|
| 1 km² | 1000000000000 mm² |
| 5 km² | 5000000000000 mm² |
| 10 km² | 10000000000000 mm² |
| 50 km² | 50000000000000 mm² |
| 100 km² | 100000000000000 mm² |