Altimeters different pressure settings, QNH , QFE & standard pressure setting,

here you can find the difference between the altimeters pressure settings , a standard one which is 1013 hpa will allow the altimeter to show a pressure altitude or a flight level , QNH is the pressure setting that allow the altimeter to show an altitude which is the vertical distance between the aircraft and the mean sea level , QFE is the altimeter pressure setting that allow the altimeter to show us height which is the vertical distance between the aircraft and the fuel elevation.