Free tools for DIY luthiers
A collection of free calculators and generators for those who build and modify electric guitars. Each tool is standalone, embeddable on your site and available in light/dark. Pick a tool from the list below to open or embed it.
Guitar Potentiometer Calculator
Calculate the value of a potentiometer combined with a parallel resistor to obtain the desired final value. The original Biafax tool.
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Treble Bleed Calculator
Calculate the capacitor and resistor value for the treble bleed circuit to apply to the volume potentiometer.
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Fret Slot Calculator
Generate exact fret distances for any scale length, with a table, 2D fretboard drawing and data export.
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Multi-Scale (Fanned Fret) Generator
Generate the fret layout for multi-scale (fanned fret) fretboards with different scale at the nut and bridge.
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Neck Angle Calculator
Calculate the neck tilt angle for guitars with high bridges (Tune-O-Matic and similar) with a 2D side profile drawing.
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Parallel Resistance Calculator
Want to turn a potentiometer into a different value? Calculate the resistor to solder in parallel, with a suggestion of the nearest commercial value.
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