What is a quarter of an inch?

A quarter of an inch is a unit of length measurement that is equal to one-fourth of an inch or approximately 0.635 centimeters. It is commonly used for measuring small distances, such as the thickness of paper or the size of a screw. It is also used in the measurement of distances in construction, engineering, and woodworking. A quarter of an inch is equivalent to 6.35 millimeters or 0.25 inches. It is often abbreviated as "1/4 in" or simply "1/4".