Fretting over under and around fret placement
![]() |
2^(1/12) Along The Diagonal |
Here's how to calculate fret placement:
Understanding the Math
The placement of frets on a guitar follows a mathematical formula based on the principle of equal temperament. This system divides the octave into 12 equal semitones, and the distance between frets decreases as you move from the nut towards the bridge.
The Formula
The distance from the nut to a given fret can be calculated using the following formula:
Fret Distance = Scale Length - (Scale Length / (2^(Fret Number / 12)))
Where:
- Scale Length: The total length of the string from the nut to the bridge.
- Fret Number: The number of the fret you're calculating (starting from 1 at the first fret).
Explanation
-
2^(Fret Number / 12): This part of the formula calculates the frequency ratio for the given fret. Each fret represents a semitone, and there are 12 semitones in an octave.
2 Raising a frequency by an octave means multiplying it by 2.3 -
Scale Length / (2^(Fret Number / 12)): Dividing the scale length by the frequency ratio gives you the distance from the bridge to the fret.
-
Scale Length - (Scale Length / (2^(Fret Number / 12))): Subtracting the distance from the bridge to the fret from the total scale length gives you the distance from the nut to the fret.
Let me know if you'd like to calculate the fret positions for a specific guitar!
Comments
Post a Comment
No Comment