Basic linear measurement unit and conversation as shown below
10 millimetre = 1 centimetre
10 centimetre = 1 decimetre
10 decimetre = 1 metre
10 metre = 1 decametre
10 decametre = 1 hectometre
10 hectometre = 1 kilometer
10 kilometer = 6.21 miles
1000 micrometre = 1 millimetre
Units of conversation is used for scale your data