1. What is the StewMac Fret Calculation Method?

The StewMac method calculates fret positions based on the 12th root of 2, which is the mathematical foundation of equal temperament tuning. This provides precise measurements for accurate intonation across the fretboard.

2. How Does the Calculator Work?

The calculator uses the StewMac fret position formula:

Where:

• \( d_n \) — Distance from nut to nth fret (inches)
• \( S \) — Scale length (inches)
• \( n \) — Fret number (dimensionless)

Explanation: The formula accounts for the logarithmic nature of musical intervals, ensuring each fret represents a semitone increase in pitch.

3. Importance of Accurate Fret Placement

Details: Precise fret placement is crucial for proper intonation. Even small errors can compound across the fretboard, making the instrument play out of tune.

4. Using the Calculator

Tips: Enter the instrument's scale length (nut to bridge distance) and the fret number you want to calculate. Typical scale lengths are 25.5" (Fender), 24.75" (Gibson), or 34" (bass).

5. Frequently Asked Questions (FAQ)

Q1: Why use this method instead of the Rule of 18?
A: The StewMac method is mathematically precise, while the Rule of 18 is an approximation that becomes increasingly inaccurate beyond the 12th fret.

Q2: Does this work for any stringed instrument?
A: Yes, the formula works for guitars, basses, mandolins, etc. as long as you input the correct scale length.

Q3: How does scale length affect fret positions?
A: Longer scale lengths result in greater distances between frets. A 34" bass will have wider fret spacing than a 25.5" guitar.

Q4: Can I calculate multiple frets at once?
A: This calculator shows one fret at a time. For full fretboard measurements, you would need to calculate each fret position individually.

Q5: Does this account for compensation at the bridge?
A: No, this calculates theoretical fret positions. Actual instrument setup requires additional compensation at the bridge for perfect intonation.