The BIONICLE Wiki
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A kio is a unit of length in the Matoran Universe. It is equal to one thousand bio. It is roughly equal to 0.85 miles or 1.37 kilometers. There are 1000 kio in a mio.

  • Metru Nui is 47.6 kio long and 24 kio wide.
  • Mata Nui is 357 kio long and 178 kio wide.
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