Fret Spacing Calculator — Precision Position Chart | LuthierMit

Calculate exact fret positions for any scale length. Support for guitar, bass, ukulele, and mandolin. Generate a printable fret distance table for your build.

Frequently Asked Questions

Where do I measure the scale length from?

Measure from the edge of the nut (where it meets the fingerboard) to the center of the bridge saddle adjustment range.

Can I use this for multi-scale (fanned fret) guitars?

Yes. You simply run the calculation twice: once for the shortest scale (treble side) and once for the longest scale (bass side).

How accurate do fret slots need to be?

Ideally within +/- 0.1mm. Errors larger than this will cause noticeable intonation problems that cannot be corrected at the bridge.