Convert from carat [metric] to as, ass [Northern Europe]

Unit Definition (carat [metric])
A metric carat defined in 1907 to be exactly 200 milligrams.

Unit Definition (as, ass [Northern Europe])
The as, ass [Northern Europe] is a traditional unit of mass for gold and silver, used in most of northern Europe but not in England. The unit varied in size from about 48 to 58 milligrams (0.75 to 0.90 English grain).