Grey Pilgrim

GP Tools

[ boot ] gp-tools v2.0 ............ OK [ load ] free tools for guitarists, live sound & music [ note ] no sign-ups · no tracking · runs in your browser [ tip ] add to home screen → installs as an app, works offline

Amps, cabs & power
Ohms CalculatorLIVE

Match amps & speaker cabs safely — impedance, wiring diagrams, power checks, a gear bank, and plain-English explanations.
Cab Wiring DesignerLIVE

Wire matched speakers to hit a target impedance — series, parallel, series-parallel.
Pedalboard Power PlannerLIVE

Will your supply handle your board? Current draw vs outputs, voltage & isolation checks per output.
Watts → LoudnessLIVE

How loud is louder? Watts + speaker sensitivity → SPL, and why 100W isn't twice 50W.
Breaker CheckerLIVE

Will your backline + PA trip the breaker? Wall draw vs the circuit (15/20A), with headroom.
Guitar, strings & tuning
String Tension & Down-TuningLIVE

Pick a tuning + scale length + gauges → per-string tension, so nothing goes floppy when you tune down.
Capo & TransposeLIVE

Find the capo fret, or shift a set of chords to a new key.
TunerLIVE

Chromatic tuner via mic/Web Audio, with drop-tuning reference presets.
Tempo & timecode
BPM & Delay CalculatorLIVE

Tap a tempo or type a BPM → delay & reverb times in ms for every note division.
MetronomeLIVE

Click track with time signature, accent & tap tempo.
Timecode & LTCLIVE

Convert, calculate, generate, and read SMPTE timecode — incl. LTC audio (29.97 drop-frame) and a file/live LTC reader.
Gigging
Setlist TimerLIVE

Add up your set length from song times, with a banter buffer.