100nF is 0.1uF or 100000pF. One microfarad is one-millionth of a Farad, and is therefore 0.000001F--or more easily written as 1uF. One nanofarad is one billionth of a Farad, so it would take one thousand nanofarads to make one microfarad. One nanofarad is 1nF or 0.001uF.