Quarts (UK) to cubic decimeters conversion calculator above calculates how many cubic decimeters are in 'X' quarts (UK) (where 'X' is the number of quarts (UK) to convert to cubic decimeters). In order to convert a value from quarts (UK) to cubic decimeters (from qt to dm³) type the number of qt to be converted to dm³ and then click on the 'convert' button.