Nanometer
A nanometer (nm) is a microscopic metric unit equal to one-billionth of a meter. It is used in science and technology to measure atoms, wavelengths of light, and semiconductor components. Nanometers help describe the invisible structures that make modern electronics work.
Because nanometers are so tiny, converting to micrometers or meters helps give context to scientific data—especially in materials research and optics.
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.