Guitar · Piano · Ukulele · Bass · Mandolin

Every chord, with the diagram, the fingering and the notes.

C major is C–E–G. G7 is G–B–D–F. ChordFlow shows every chord on every instrument — guitar, piano, ukulele, bass and mandolin — with diagrams, fingerings, voicings and the theory behind them. Free, no sign-up.

Chord Finder Guitar Chords Scale Finder

Type a chord or scale to find it — C major, G7, A minor pentatonic and hundreds more.

Every tool, grouped


Chord finders

Any chord on guitar, piano, ukulele, bass or mandolin — diagrams, fingerings, notes and voicings.

Scales & keys

Scales, keys, the circle of fifths and the relationships between them — what fits together and why.

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.

Chords & theory by topic


Guitar Chords — Diagrams, Fingerings & Voicings

Every guitar chord with a diagram, fingering, notes and intervals — open chords, barre chords and movable voicings, all free.

288 guides →

Piano Chords — Notes, Voicings & Inversions

Every piano chord with its notes, voicings and inversions — play it in root position, then move it around the keyboard.

288 guides →

Ukulele Chords — Diagrams & Fingerings

Every ukulele chord with a diagram and fingering — the four-string shapes you actually need, from C major to the tricky barre chords.

288 guides →

Bass Chords — Notes & Arpeggios

Bass chords and arpeggios: the notes of every chord on the fretboard, so you can outline a progression instead of guessing.

288 guides →

Mandolin Chords — Diagrams & Fingerings

Every mandolin chord with a diagram and fingering — four-course shapes for folk, bluegrass and classical playing.

288 guides →

Scales — Notes, Formulas & Fingerings

Every scale with its notes, formula and intervals — major, minor, pentatonic, blues and the modes, for guitar, piano and ukulele.

144 guides →

Keys — Chords, Notes & Relative Minors

Every key with its notes, diatonic chords and relative major or minor — the map of what fits together in a song.

24 guides →

Chord Progressions — Common Patterns by Key

The chord progressions behind thousands of songs — I–V–vi–IV, ii–V–I, 12-bar blues and more, in every key.

288 guides →

Music Theory Guides

Music theory guides that explain how chords, scales and keys actually work — written for players, not textbooks.

180 guides →

Why a chord is more than a shape

A chord diagram tells you where to put your fingers, but it does not tell you why the shape works. A C major chord is C–E–G — the root, the major 3rd and the perfect 5th. Move the E down a semitone to Eb and you have C minor. Add a Bb and you have C7. Every chord on this site shows its notes and intervals alongside the diagram, so the shape and the theory stay together.

The same honesty applies to keys and progressions. The chords in the key of C major — C, Dm, Em, F, G, Am, Bdim — are not a list to memorise; they are the chords built from the notes of the C major scale, and the Key Finder shows exactly how. A capo does not change the song, it changes the shapes: the Capo Calculator works out what key you are really playing in. Read how we work in our Editorial Policy, and start with the Chord Finder or the Scale Finder.


Frequently asked questions

What notes are in a C major chord?

A C major chord has three notes: C, E and G — the root, the major 3rd and the perfect 5th. On guitar the open position is x32010; on piano it is C–E–G; on ukulele it is 0003.

What is the easiest guitar chord for beginners?

Most beginners start with E minor, C major, G major and D major. E minor needs just two fingers, C major needs three, and together with G and D they cover thousands of songs in the key of G.

What is the difference between a major and a minor chord?

One note: the 3rd. A major chord has a major 3rd (four semitones above the root) and a minor chord has a minor 3rd (three semitones). C major is C–E–G; C minor is C–Eb–G. That one semitone is the whole difference between bright and sad.

How do I transpose a chord to another key?

Move every note of the chord by the same number of semitones. To move C major up two semitones you get D major: C→D, E→F#, G→A. The Chord Transposer does this for a whole progression at once, and the Capo Calculator does the same job for a capo.

What chords are in the key of C major?

Seven diatonic chords: C major, D minor, E minor, F major, G major, A minor and B diminished. The Key Finder lists the chords, notes and relative minor of every key.

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