A centimeter (cm) is a unit of length in the metric system, equal to one hundredth of a meter. It is commonly used in various fields, including science, engineering, and everyday measurements. For example, a standard ruler often has centimeter markings, making it easy to measure small objects accurately. Centimeters are particularly useful for measuring shorter lengths, such as the height of a person or the dimensions of a piece of furniture. The metric system, which includes centimeters, is widely adopted around the world, facilitating international communication and trade in measurements. Metric System is the foundation for many scientific calculations and conversions.