The calculators every luthier keeps reaching for
Bridge compensation, fret positions, string tension and gauge. Built by a guitar maker, and free to use in your browser.
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What's inside
Bridge compensation
Per-string saddle compensation from gauge, material, pitch and scale length, with a warning when a string is outside the range the data supports.
Fret positions
Fret distances from the nut, from the bridge and from the previous fret, in inches or millimetres.
String tension
Exact tension for any gauge, material and pitch. Pick an instrument preset and adjust each string.
String gauge
Find the gauge that gives the tension you want, for the same set of instrument presets.
Also: mm to inch converter
Fitted against real data, not guesswork
The compensation model is calibrated against published string data and an independent reference calculator, with a separate fit for each instrument family. Errors are checked in thousandths of an inch, not just percentages.
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