Tools for Pedal Builders
Free online calculators and reference tools for DIY guitar pedal and electronics projects.
Capacitor Code Decoder
Decode 3-digit ceramic codes (103, 473, 104), film cap markings, EIA-198 SMD codes, and tolerance/voltage ratings. Encode values back to codes.
Open tool →Resistor Colour Code Calculator
Decode 4, 5, and 6-band resistor colour codes to values. Encode resistance values to colour bands. Convert SMD resistor codes (3-digit, 4-digit, EIA-96).
Open tool →LED Resistor Calculator (CLR)
Calculate the current limiting resistor for any LED. Enter supply voltage, forward voltage, and desired current to get the correct resistor value, nearest E24 standard value, and power dissipation.
Open tool →Enclosure Size Comparison
Compare guitar pedal enclosure sizes visually. See 125B, 1590B, 1590BB and more drawn to scale, check PCB fit, and view internal dimensions side by side.
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