Square Millimeter to Square Kilometer
1 Square Millimeter = 1.0000e-12 Square Kilometer
Conversion Formula
To convert Square Millimeter to Square Kilometer, multiply the value by 1.0000e-12.
Square Millimeter × 1.0000e-12 = Square Kilometer
Quick Reference
| mm² | km² |
|---|---|
| 1 | 1.0000e-12 |
| 5 | 5.0000e-12 |
| 10 | 1.0000e-11 |
| 25 | 2.5000e-11 |
| 50 | 5.0000e-11 |
| 100 | 1.0000e-10 |
| 500 | 5.0000e-10 |
| 1000 | 1.0000e-9 |
What is Square Millimeter?
The square millimeter (symbol: mm²) is an SI unit of area.
It is defined as the area of a square with sides of one millimeter in length. One square millimeter is equal to one-millionth of a square meter (0.000001 m²).
Common Uses
Square millimeters are used to measure very small areas, such as the cross-sectional area of electrical wires, precise mechanical parts, or small biological samples.
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 millimeter?
There are 1.0000e-12 square kilometer in 1 square millimeter.