Free Online Fret Calculator

Free Online Fretboard Calculator & Designer

Guitar Fret Calculator

Based upon the trusted FretFind2D, this does not just calculate fret spacing, it models the entire fretboard, strings and frets, as a system of line segments on a two dimensional plane.

Because of this approach, it can design fretboards for instruments with multiple scale lengths and non-parallel frets as well as fretboards for instruments that play just or meantone scales.

All credit for the maths goes to Aaron Spike. I just tidied up the visual look.


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