to represent second moment of areas (cm 4) as the inverse of the Kayser, a CGS unit, and thus a non-SI metric unit of wavenumber: 1 kayser = 1 wave per centimetre; or, more generally, …

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.

1cm is equivalent to 0.39370 inches. Origin: The metric, or decimal, system of weights and measures was defined and adopted in France in 1795. Using the metre as the basis for length …

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.

Our Online Ruler Features This is a handy and convenient online ruler that could be calibrated to actual size, measurements in cm, mm and inch, the upper half is the millimeter ruler and …

Nov 29, 2025 · centimetre (cm), unit of length equal to 0.01 metre in the metric system and the equivalent of 0.3937 inch.

Convert centimeters to inches (cm to in) with the length conversion calculator, and learn the centimeter to inch formula.