The millimetre (SI unit seembol mm) is a unit o lenth in the metric seestem, equal tae ane thoosandt o a metre, which is the SI base unit o lenth.

Millimetre
Unit seestemmetric
Unit olength
Seembolmm 
Unit conversions
1 mm in ...... is equal tae ...
   SI units   1×10−3 m
   imperial/US units   0.0032808 ft
0.039370 in