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Keys and Scales

Music theory tools: keys, scales and chords at a glance

Pick a key and see its scale, its chords and its key signature on the piano, the staff and the guitar. Everything is worked out from the rules of music theory and checked against an independent reference.

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Circle of fifths Open full page

Most used

Circle of fifthsEvery key with its signature, relative minor and chords Music scalesNotes of any scale on the piano, staff and guitar Guitar chord chartChord diagrams in standard tuning, open and barre Piano chordsAny chord on the keyboard, with its notes and inversions Ukulele chord chartChord diagrams for ukulele in GCEA tuning Key signaturesSharps and flats of every key, in treble and bass clef Chord finderTap notes on the piano to name the chord Tap tempo (BPM counter)Tap along to find the BPM of a song

Scales & keys See all

Circle of fifthsEvery key with its signature, relative minor and chords Music scalesNotes of any scale on the piano, staff and guitar Key signaturesSharps and flats of every key, in treble and bass clef Chords in a keyThe seven chords of any key, with Roman numerals Interval calculatorName the interval between two notes, or add one

Chords See all

Piano chordsAny chord on the keyboard, with its notes and inversions Guitar chord chartChord diagrams in standard tuning, open and barre Ukulele chord chartChord diagrams for ukulele in GCEA tuning Chord finderTap notes on the piano to name the chord Transpose chordsMove a song's chords to another key, with capo chart

Notes & tempo See all

Piano notesNames of the 88 piano keys, octave and frequency Guitar fretboard notesEvery note on the neck, in six tunings Note frequency chartHz of every note, and the note of any frequency Tap tempo (BPM counter)Tap along to find the BPM of a song

Correct spelling

F♯ in D major, B♭ in F major: every note is named the way theory books write it.

Tested

Scales, key signatures, chords, intervals and frequencies are checked against music21, an independent music theory library.

Piano, staff and guitar

See each scale and chord on the keyboard, on the staff and on the fretboard.

Private

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