Gallons (US dry) to fluid drams converter above calculates how many fluid drams are in 'X' gallons (US dry) (where 'X' is the number of gallons (US dry) to convert to fluid drams). In order to convert a value from gallons (US dry) to fluid drams (from gal to fl dr) type the number of gal to be converted to fl dr and then click on the 'convert' button.