6378 nanometers equals 6.38 micrometers.
Convert 6378 nanometers into meters, kilometers, decimeters, centimeters, milimeters, picometers, inches, feet, yards, miles, hands, lightyears, astronomical units, parsecs, etc...
Convert 7 micrometers into meters, kilometers, decimeters, centimeters, milimeters, picometers, inches, feet, yards, miles, hands, lightyears, astronomical units, parsecs, etc...