Capacitors typically have values in either picofarads (pF) or microfarads (μF).
To convert pF to μF, multiply by .000001
Example: 4700 pF = .0047 μF
To convert μF to pF, multiply by 1,000,000
Example: .0033 μF = 3300 pF
Note: Many pieces of vintage equipment referred to capacitance units in micromicrofarads (mmF).
This unit is now referred to as picofarads (pF).
The values of film and ceramic disk capacitors are typically marked in picofarads (pF) using a 3 digit number followed by a letter, for example:
The first 2 digits are the two significant values of the capacitance and the 3rd digit is number of following zeroes.
For the above example, the value is
6800 pF = .0068 μF
The letter following the three digits is typically the value tolerance, where:
J = 5% K = 10% M = 20%