Convert square millimeter (mm²) to square kilometer (km²)

UnitsAreasquare millimetermm²square kilometerkm²

  • ⇣ mm²
    km² ⇣
  • 1
    1.0E-12
  • 10
    1.0E-11
  • 20
    2.0E-11
  • 50
    5.0E-11
  • 100
    1.0E-10
  • ⇣ mm²
    km² ⇣
  • 1,000
    1.0E-9
  • 10,000
    1.0E-8
  • 25,000
    2.5E-8
  • 50,000
    5.0E-8
  • 100,000
    1.0E-7

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