Millimetre - Wikipedia The millimetre (SI symbol: mm; international spelling) or millimeter (American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, the SI base unit of length
Millimeter (Millimetre) — Definition, Formula Examples A millimeter (mm) is a very small unit of length in the metric system, equal to one-thousandth of a meter It is about the thickness of a dime or a paperclip wire
Millimeter - Formula, Conversions, Examples - Cuemath A millimeter can be defined as a metric unit used to measure the length of small or tiny objects such as measuring lines, the length of a pencil tip, etc The word is usually expressed as 'mm' and is considered to be equal to one-thousandth of a meter
Millimetre (mm) | Britannica metric system, international decimal system of weights and measures, based on the metre for length and the kilogram for mass, that was adopted in France in 1795 and is now used officially in almost all countries
Millimeters Explained: The Official Abbreviation You Should Use TL;DR: The official abbreviation for millimeters is “mm” This unit is widely used in science, engineering, and everyday measurements Learn how to use it correctly, its history, and common mistakes to avoid in this guide