Acre-feet to cubic decameters converter on this page calculates how many cubic decameters are in 'X' acre-feet (where 'X' is the number of acre-feet to convert to cubic decameters). In order to convert a value from acre-feet to cubic decameters (from ac ft to dam³) simply type the number of ac ft to be converted to dam³ and then click on the 'convert' button.