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What is the full form of MM?

Published in Metric Units 1 min read

The full form of MM, as it pertains to units of length, is millimetre.

Understanding Millimeters

A millimetre is a unit of length in the metric system. It is equal to one thousandth of a meter.

  • Definition: 1 millimetre = 0.001 meters
  • Abbreviation: mm
  • Use: Millimeters are commonly used for measuring small objects or distances.

Examples of MM Usage

Here are some examples illustrating the use of millimeters:

  • Dimensions: As indicated in the provided reference, an object might measure "119 mm in length by 63 mm in width by 13 mm deep."
  • Small components: The width of a small electronic component or the thickness of a thin sheet of material.
  • Technical drawings: Precise measurements in engineering and architectural plans.

Metric System Context

The millimetre fits within the metric system as part of the larger set of units, with each unit based on powers of ten:

Unit Abbreviation Relationship to Meter
Kilometre km 1000 meters
Meter m 1 meter
Centimetre cm 0.01 meters
Millimetre mm 0.001 meters


Therefore, when you see "mm", you know it signifies measurement in millimeters.