Fluid drachms to gills (US) conversion calculator shown above calculates how many gills (US) are in 'X' fluid drachms (where 'X' is the number of fluid drachms to convert to gills (US)). In order to convert a value from fluid drachms to gills (US) type the number of fl drc to be converted to gills (US) and then click on the 'convert' button.