Gallons (US liquid) to gills (US) converter on this page calculates how many gills (US) are in 'X' gallons (US liquid) (where 'X' is the number of gallons (US liquid) to convert to gills (US)). In order to convert a value from gallons (US liquid) to gills (US) type the number of gal to be converted to gills (US) and then click on the 'convert' button.