Successively dividing the scale length minus the distance from the nut to the The historical technique for calculating the location for each fret is called the Rule of 18, and it involves Discussions about fret placement accuracy and choosing scale lengths are also included. There are also instructions and calculators for calculating the fret locations of multiscale (so called 'fanned fret') fretboards, for microtonal instruments, and for instruments which feature extended range bass strings. Of course the info and calculators needed to calculate fret positions for modern instruments, using the 12 th root of 2 are here as well. Information and calculators for the now old-fashioned Rule of 18 are included for those building reproductions of old instruments. Not everyone has an academic interest in how all of this works, so this page includes some easy-to-use calculators that will perform all the calculations for you. There is also information for folks that want to do the calculations to figure out fret positions themselves. For those that are interested, there is a bit of history about the way this has been historically calculated. This page is all about the calculation of the locations of the frets of a fretted instrument.

Fanned fretboard template