square millimeters to square kilometers
Convert square millimeter to square kilometer — instant, free, with the formula shown.
1 mm²=1.0000e-12 km²
How to convert square millimeter to square kilometer
To convert square millimeter to square kilometer, multiply by 1.0000e-12:
km² = mm² × 1.0000e-12
For example, 10 mm² × 1.0000e-12 = 1.0000e-11 km².
mm² to km² conversion table
| square millimeters (mm²) | square kilometers (km²) |
|---|---|
| 1 mm² | 1.0000e-12 km² |
| 2 mm² | 2.0000e-12 km² |
| 5 mm² | 5.0000e-12 km² |
| 10 mm² | 1.0000e-11 km² |
| 25 mm² | 2.5000e-11 km² |
| 50 mm² | 5.0000e-11 km² |
| 100 mm² | 1.0000e-10 km² |
| 250 mm² | 2.5000e-10 km² |
| 500 mm² | 5.0000e-10 km² |
| 1000 mm² | 1.0000e-9 km² |
Other square millimeter conversions
Convert to square kilometer from another unit
mm² to km² — frequently asked
How many square kilometers are in 1 square millimeter?
1 square millimeter = 1.0000e-12 square kilometers (mm² × 1.0000e-12 = km²).
What is the formula to convert square millimeter to square kilometer?
Multiply your square millimeter value by 1.0000e-12 to get square kilometer.
How do I convert 10 square millimeters to square kilometers?
10 mm² = 1.0000e-11 km². For 100 mm² the answer is 1.0000e-10 km². Use the calculator on this page for any other value.