If you're unsure, take a tape measure and loosely fold it around all the needed edges of the cabinet and go off that. It always seems a lot, but if you think of an average cabinet at 6 foot high, that's 6 foot front and back, on two sides, plus around 6 foot round a large control panel....... over 30 feet already, not counting all the curves and contours...
Better to have too much than too little, although the stuff can work out expensive.