Gallons (UK) to quarts (US liquid) conversion calculator above calculates how many quarts (US liquid) are in 'X' gallons (UK) (where 'X' is the number of gallons (UK) to convert to quarts (US liquid)). In order to convert a value from gallons (UK) to quarts (US liquid) (from gal to qt) just type the number of gal to be converted to qt and then click on the 'convert' button.