Altimeter Setting
I know this has been asked a million times, and apologies in advance but I've researched this question and confused myself silly.
My understanding is that QFE - Height above aerodrome (0' on ground)
QNH - Altitude above aerodrome (Set sub scale with current MB reading) will display aerodromes elevation above MSL.
QNE - Altitude above MSL at standard setting of 1013 (used when above 3000ft, only if dealing with ATC)
As a microlight pilot I know we'll mostly deal with QFE & QNH.
My question is, how do you set QNH from QFE?
Thank you!