Prefixes converter 1.2

Use this useful tool to convert prefixes choosing one of the 21 units of measurment included in this app (with the availability to add custom units), that are:
base, yotta, zetta, exa, peta, tera, giga, mega, kilo, hecto, deka, deci, centi, milli, micro, nano, pico, femto, atto, zepto, yocto.