An inch is a unit of length commonly used in the US customary and British Imperial systems. It is exactly equal to 2.54 centimeters or 1/12 of a foot. In practical terms:
- 1 inch = 2.54 cm
- 12 inches = 1 foot
- 36 inches = 1 yard
The inch is often abbreviated as "in" or represented with a double prime symbol (″). It can be divided into halves, quarters, eighths, sixteenths, and smaller fractions for precision measurement.
