420 Square Millimeters to Square Kilometers
Convert 420 square millimeters (mm²) to square kilometers (km²) with formulas, examples, and conversion tables.
mm²
km²
420 square millimeters (mm²) = 4.2e-10 square kilometers (km²)
Round to:
Step-by-Step Solution
1Write the conversion factor:
1 square kilometer = 1e12 square millimeters
2Divide the value by the conversion factor:
420 ÷ 1e12 = 4.2e-10
3Result:
420 square millimeters (mm²) = 4.2e-10 square kilometers (km²)
Square Millimeters to Square Kilometers Conversion Table
| Square Millimeters | Square Kilometers |
|---|---|
| 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 |
| 50 mm² | 5e-11 km² |
| 100 mm² | 1e-10 km² |
| 420 mm² | 4.2e-10 km² |
420 Square Millimeters in Other Units
| Unit | 420 mm² = |
|---|---|
| Square Millimeters to Square Kilometers | 4.2e-10 km² |
| Square Millimeters to Hectares | 4.2e-8 ha |
| Square Millimeters to Square Meters | 0.00042 m² |
| Square Millimeters to Square Centimeters | 4.2 cm² |
| Square Millimeters to Square Miles | 1.62162906609e-10 mi² |
| Square Millimeters to Acres | 1.03784168466e-7 ac |
| Square Millimeters to Square Yards | 0.000502316035722 yd² |
| Square Millimeters to Square Feet | 0.0045208443215 ft² |
| Square Millimeters to Square Inches | 0.651001302003 in² |
| Square Millimeters to Ares | 4.2e-6 a |
| Square Millimeters to Barns | 4.2e24 b |