Calculates the fret placement on a relatively
standard guitar using the X^{th} root of two.
It, of course, could be used to design any sort of
equal temperament stringed instrument.
In addition to the features that are found on most fret placement calculators
this page calculates fret width and cumulative fret width to help approximate
how much fret wire is needed. A recent addition is rounding of units to the nearest fraction.

A reverse fret placement calculator.
Ever wonder where the frets behind the nut go?
A simplified version of the above script tailored for those who would like to add a little length.

Calculates the frequency of notes in hertz
using the 12^{th} root of two.
Produces a chart of eight octaves:
four octaves above and four octaves below the reference pitch given for "A."

Calculates the relationship between
length, thickness, frequency, density and tension for a string.
These calculators differ only in the units used to measure string properties.