Micrometer
A micrometer (µm) is a metric unit of length equal to one-millionth of a meter. It is commonly used in science, engineering, and manufacturing to measure microscopic dimensions. For reference, a human hair is typically between 50 and 100 micrometers thick.
Micrometers help describe the size of bacteria, material thickness, and tiny machine components. When comparing such small values with larger units, a conversion tool can make precise measurements much easier to work with.
Centimeter
A centimeter (cm) is a widely used unit of length in the metric system. It represents one hundredth of a meter, making it ideal for measuring small objects or precise distances. You'll commonly see the centimeter used in school projects, everyday measurements, clothing sizes, and household tools like rulers and tape measures.
The centimeter bridges the gap between millimeters and meters, offering accuracy without tiny decimals. When converting to or from other units—such as inches, where 1 inch equals 2.54 centimeters—an online unit converter ensures speed and precision.