Interactive Tools

Piano Tools

Serial number lookup, chord builder, metronome, and cost calculator. All in one place.

Serial Number Lookup

Find the age and origin of your piano instantly.

Chord & Scale Builder

Build chords and scales interactively with audio playback.

Online Metronome

Free in-browser metronome for practice.

Online Piano Tuner

Check how far your piano is from A440 with your microphone.

Tuning Cost Calculator

Estimate piano tuning cost for your instrument.

Explore chords, scales and keys

Piano Chord Library
Every common chord in all 12 keys, with notes, keyboard diagrams, inversions and sound.
Piano Scale Library
Major, minor, pentatonic, blues and modal scales in every key, spelled correctly.
Major and Minor Keys
All 24 keys in circle-of-fifths order, with key signatures, chords and progressions.