Cubic millimeters to microliters conversion calculator above calculates how many microliters are in 'X' cubic millimeters (where 'X' is the number of cubic millimeters to convert to microliters). In order to convert a value from cubic millimeters to microliters (from mm³ to μL) simply type the number of mm³ to be converted to μL and then click on the 'convert' button.