String Tension Calculation

[Farrell]

To those of us less mathematically challenged than I:

I have the formula(s) (thanks Ron N.) for converting hertz to tension (given
a specific string diameter, density (or whatever), and speaking length), but
I need to convert pitch in units of notes and cents into hertz. For example:
I measure a pitch on my Accutuner as being D5 plus 60 cents. I know that I
can find a non-stretched pitch in hertz for D5 on a table somewhere (or any
other note - I have this somewhere I think), but how do I add the 60 cents
to the D5 hertz value? Thanks to any of the professors out there.

Terry Farrell