Tools for Pedal Builders
Free online calculators and reference tools for DIY guitar pedal and electronics projects.
Capacitor Code Decoder
Identify and decode 3-digit ceramic capacitor codes, film cap markings, EIA-198 SMD codes, tolerance letters, and voltage ratings — or reverse-look up a value to find its marking code.
Open tool →Resistor Colour Code Calculator
Decode resistor colour bands to find the resistance value, encode a value back to colour bands, or convert SMD resistor codes — supporting 4, 5, and 6-band resistors.
Open tool →LED Resistor Calculator
Calculate the current limiting resistor (CLR) for any LED. Pick your LED colour, supply voltage, and brightness to get the correct resistor value.
Open tool →Pedal Enclosure Size Chart & Comparison
Compare guitar pedal enclosure sizes visually. Select up to four enclosures to see them drawn to scale with internal dimensions and usable area — or enter a PCB size to check which enclosures fit.
Open tool →Plan your enclosure layout
Got your components sorted? Design your pedal enclosure in the browser with millimetre precision and export print-ready drill templates.
Open the app — it’s free