A WORKBENCH FOR IDEAL FRET POSITIONS
Every fret.
One reference.
Turn a scale length into a clear, equal-temperament fret table. Measure each theoretical position from the nut reference, with shrinking gaps and an export you can keep.
FreeLocal calculationNo account
01 / ENTER YOUR SCALE
A theoretical layout,
made explicit.
These are ideal, uncompensated positions. They do not determine an actual saddle or bridge position, string setup or intonation. Read the limits.
POSITION TABLE UNAVAILABLE
Check the highlighted entry.
Valid inputs are needed before a result or export is available.
02 / YOUR THEORETICAL POSITIONS
Nut to fret 24
487.5 mm
- Entered theoretical scale
- 650 mm
- 12th-fret octave check
- 325 mm
- Final ideal remaining length
- 162.5 mm
SVG uses physical millimetres. Check its reference bar before using a printed copy; screen and printer scaling can change its size.
03 / READ FROM THE SAME ORIGIN
The position table.
Distances are in mm. Display rounding is separate from calculation.
| Fret | From nut reference | Previous gap |
|---|
The smaller line in each position cell is the ideal remaining string length. This is not a compensated bridge location.
THE METHOD
Halve the length.
Raise an octave.
In the ideal model, twelve equal semitone steps double frequency and halve vibrating length. At fret n, the remaining length is the scale multiplied by 2−n/12.
Fretmark calculates each position from the original scale, so rounded fret-to-fret values do not accumulate. Follow the worked examples.