Auger length calculator Auger length calculator Silo Height (in meters):The maximum height the auger is required to reach. This generally will be your silo fill point from ground level.Operating Angle:The operating angle of the auger. The most suitable maximum operating angle for an auger is 35 degrees. IMPORTANT: if your ground level slopes away or rises, you must take this into account in your calculations.Display Result In:MetersFeetSuggested Auger Length: