18 inches equals 4.57 decimeters.
Convert 18 inches into meters, kilometers, centimeters, milimeters, micrometers, nanometers, picometers, feet, yards, miles, hands, lightyears, astronomical units, parsecs, etc...
Convert 5 decimeters into meters, kilometers, centimeters, milimeters, micrometers, nanometers, picometers, feet, yards, miles, hands, lightyears, astronomical units, parsecs, etc...