If the rightmost digit is zero.

Then the code may be a value in pF instead of the 3-digit code

example: 100 should indicate 10pF

However it  may instead be a marking of the actual value of 100pF.

If the rightmost digit is not zero, then the value maybe coded.

Example: 101 is not 101pF but more likely 100pF.

If the capacitor code is only 2 digits, then that is certainly the value in picofarads (pF).

millifarad mF one thousandth  not included in this calculator

  microfarad μF
one millionth
nanofarad  nF
one billionth
picofarad pF
one trillionth
Capacitor Code Capacitor  in uF Capacitor  in nF Capacitor  in pF