All tools
32 free tools, no sign-up
Everything runs in your browser — nothing you type is sent to a server. Chord diagrams, scales and intervals follow standard equal-temperament music theory (A4 = 440 Hz).
Chord finders
Any chord on guitar, piano, ukulele, bass or mandolin — diagrams, fingerings, notes and voicings.
Chord Finder
Any chord, any instrument — diagram, notes, fingerings
Guitar Chord Finder
Guitar chord diagrams and fingerings
Piano Chord Finder
Piano chord notes, voicings and inversions
Ukulele Chord Finder
Ukulele chord diagrams and fingerings
Bass Chord Finder
Bass chord notes and arpeggios
Mandolin Chord Finder
Mandolin chord diagrams and fingerings
Chord Inverter
Root position, 1st, 2nd and 3rd inversions
Chord Voicing Explorer
Every voicing of a chord across the fretboard
Scales & keys
Scales, keys, the circle of fifths and the relationships between them — what fits together and why.
Scale Finder
Any scale — notes, formula and intervals
Guitar Scale Finder
Guitar scale patterns on the fretboard
Piano Scale Finder
Piano scale notes on the keyboard
Ukulele Scale Finder
Ukulele scale patterns on the fretboard
Chord to Key Finder
Chords in, the key out
Key Finder
Every key — notes, chords, relative minor
Scale Degree Calculator
What degree is this note in this key?
Circle of Fifths
Interactive circle of fifths
Relative Major / Minor Finder
Find the relative major or minor of any key
Transpose & capo
Move a song to a new key, or work out what a capo does to the chords you are playing.
Chord progressions
Build progressions in any key, or name the progression behind the chords you already play.
Fretboard & keyboard
Find any note on the fretboard or the piano keyboard — and every place it appears.
Music theory
Intervals and frequencies — the numbers behind the notes.
Practice tools
Tuners, a metronome, tap tempo, strumming patterns and a chord quiz — the daily practice kit.
Guitar Tuner
Reference tones for standard tuning
Ukulele Tuner
Reference tones for G–C–E–A tuning
Metronome
Free online metronome, 40–208 BPM
Tap Tempo
Tap to find the BPM of any song
Strumming Pattern Finder
Strumming patterns by feel and time signature
Practice Chord Quiz
Test yourself: name the chord from the diagram
Not sure where to start?
Most people come for one of three things: finding a chord, finding a scale, or moving a song to a new key. Start with the Chord Finder, the Scale Finder or the Chord Transposer. If you are practising, the Metronome and the Guitar Tuner are the two tools you will use every day.
Prefer reading to calculating? The guides cover the same ground in depth: guitar chords, piano chords, scales and keys.