when you are using ceramic non polarize and you do not know its value here is the simplest method of finding out capacitors values in Farad from its number written on each capacitors.
lets explain it in an example
if u have a non polarize capacitor and its marking value written on it is 104 as shown in the figure,
its means that its value of capacitance in Farad(unit) is
104= 10+4 zeros =10,0000
that is 104 means that a 10 and four more zeros with it
so it become 10,0000 which must be in pico farad so 104=100000pF.
