Use this useful tool to convert linear current density choosing one of the 8 units of measurment included in this app (with the availability to add custom units), that are:
ampere/meter, ampere/centimeter, ampere/inch, abampere/meter, abampere/centimeter, abampere/inch, gilbert/centimeter, oersted.
For every units of measurment are also included formulas to convert that unit as you want.