Square Millimeters to Square Kilometers Converter
CommonSquare meters, acres, hectares and more.
How to convert Square Millimeters to Square Kilometers
Multiply the square millimeters value by 1e-12: 1 mm² = 1e-12 km². Going the other way, 1 km² = 1e+12 mm², so divide by 1e-12 or use the Square Kilometers to Square Millimeters converter.
About these units
Square Kilometers (km²)
A square kilometer is one million square meters, about 0.386 square miles or 100 hectares. The areas of cities and countries are given in square kilometers.
Square Millimeters to Square Kilometers conversion table
| Square Millimeters (mm²) | Square Kilometers (km²) |
|---|---|
| 1 mm² | 1e-12 km² |
| 2 mm² | 2e-12 km² |
| 3 mm² | 3e-12 km² |
| 4 mm² | 4e-12 km² |
| 5 mm² | 5e-12 km² |
| 10 mm² | 1e-11 km² |
| 20 mm² | 2e-11 km² |
| 25 mm² | 2.5e-11 km² |
| 50 mm² | 5e-11 km² |
| 100 mm² | 1e-10 km² |
| 500 mm² | 5e-10 km² |
| 1,000 mm² | 1e-9 km² |
More square millimeters conversions
- Square Millimeters to Square Meters1 mm² = 1e-6 m²
- Square Millimeters to Square Centimeters1 mm² = 0.01 cm²
- Square Millimeters to Hectares1 mm² = 1e-10 ha
- Square Millimeters to Ares1 mm² = 1e-8 a
- Square Millimeters to Square Feet1 mm² = 1.0764e-5 ft²
- Square Millimeters to Dunams1 mm² = 1e-9 dunam
See every unit on the Area Converter.