9990 picometers equals 9.99 nanometers.
Convert 9990 picometers into meters, kilometers, decimeters, centimeters, milimeters, micrometers, inches, feet, yards, miles, hands, lightyears, astronomical units, parsecs, etc...
Convert 10 nanometers into meters, kilometers, decimeters, centimeters, milimeters, micrometers, inches, feet, yards, miles, hands, lightyears, astronomical units, parsecs, etc...