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