Convert centimeters to feet and inches (cm to ft) for height, length or distance measurements. A centimetre (the American spelling is centimeter, symbol cm) is a unit of length in the International System of Units (SI) measurement system. It is equal to one hundredth of a metre. Definition: A centimeter (symbol: cm) is a unit of length in the International System of Units (SI), the current form of the metric system. It is defined as 1/100 meters. Look up CM, Cm, c.m., cM, or cm in Wiktionary, the free dictionary. CM or its variants may refer to: Chief Minister, an appointed head of government. Search for cm or c-m on Wikipedia. This disambiguation page lists articles associated with the title CM. A centimeter (cm) is a metric unit of measurement used for measuring the length of an object. Learn about the tools, conversion charts, examples, & more. If you have any specific questions regarding the Certificate of Merit program, please contact us. If you are interested in becoming a CM Evaluator, you can apply here. Centimeters to inches (cm to in) converter and how to convert. Definition: A centimeter (symbol: cm) is a unit of length in the International System of Units (SI), the current form of the metric system. It is defined as 1/100 meters. A centimetre (International spelling) or centimeter (American English), with SI symbol cm, is a unit of length in the International System of Units (SI) equal to one hundredth of a metre, centi- being the SI prefix for a factor of 1 100. [1] Metric vs. Imperial: understanding the two measurement systems A side-by-side comparison of metric and imperial units for weight, volume, temperature, speed, length, and global use.