This is a fret position calculator to help locate fret slots when building stringed instruments. A variety of temperaments are supported including meantone and pure intonation. The majority of pure ratios are taken from Kyle Gann's Anatomy of an octave page.


notes per octave:

comma:    division:

Scale length:


FretratiocentsCent OffsetDistance from nutFrequency
First octaveSecond octaveThird octaveFirst octaveSecond octaveThird octave