Fret Position Calculator
Frets are placed by a fixed rule, so each one sits a set distance from the nut. Enter the scale length, which is the distance from the nut to the bridge saddle, and the fret number to see where it goes.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
How it works
Each fret is placed so the note sounds one half step higher than the fret before it. The distance from the nut is the scale length minus the scale length divided by 2 to the power of the fret number over 12.
The distance from the fret to the bridge is the scale length divided by 2 to the power of the fret number over 12. The two distances add up to the full scale length.
Worked example
On an instrument with a 25.5 in scale, fret 12 sits 12.75 in from the nut, leaving 12.75 in between that fret and the bridge.
Questions
Where do I find the scale length?
It is usually listed in the instrument's specs. If you are not sure, measure from the nut to the bridge saddle along the strings. Many electric guitars are near 25.5 inches, and many basses are near 34.
Does this work for a fretless or fan-fret instrument?
No. This assumes straight frets in equal temperament, the usual layout for guitars and basses. Fan-fret and fretless instruments need different measurements.
Why do the frets look closer together higher up?
Each fret shortens the string by the same ratio, not by the same length. So the gaps get smaller as you go up the neck, and the spacing follows the same rule every time.
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