Piano Chords

Piano's chord roster on StrumAndKey covers 17 qualities across all 12 keys — 204 pages. That's narrower than guitar's 21-quality, 252-page set: 11th and 13th chords and the guitar-only power chord (5) are left off the piano roster deliberately, because in real piano voicing practice, an 11th or 13th chord is almost never played with every theoretical note present. A right hand has five fingers and a genuinely full 13th chord needs seven distinct pitch classes; pianists compress those chords by omitting the root (the bass note or left hand usually covers it) and often the 5th, keeping the notes that actually define the chord's color — the 3rd, 7th, and the extension itself. StrumAndKey's 17-quality piano roster reflects the chords players build as genuinely distinct, commonly-voiced shapes rather than every mathematically possible stack.

Unlike a fretted instrument, a piano key is a piano key regardless of which finger plays it or which octave you're in — there's no "barre chord problem" the way there is on guitar, because nothing about the keyboard layout resists reaching any combination of white and black keys within a hand span. What piano chords do have instead is genuine left-hand/right-hand division: a bass note (often just the root, sometimes an inversion's bass tone) in the left hand, and the rest of the chord voiced in the right hand or split across both. That division is real and it's why piano voicings on this site are shown as relative key-number diagrams rather than a fretboard-style grid — a piano chord "shape" is a hand position, not a sequence of fret numbers.

Every major key's associated 6th chord, every minor key's m6, m7, and m9 — these extended-but-still-common qualities sit comfortably in piano's vocabulary because closed-position piano voicings (all the chord tones within a single octave) can be reached by a normal hand span in ways a guitarist reaching for the same notes across strings sometimes can't. That's part of why jazz piano voicing vocabulary (maj7, m7, 9, maj9, m9, m7b5 half-diminished chords especially) developed the way it did — a pianist comping through a ii-V-I progression is constantly reaching for exactly these qualities, often in rootless voicings where the bass player or the left hand alone carries the root.

Inversions matter more visibly on piano than on most fretted-instrument diagrams, because moving a chord's bass note changes which finger plays which key in a way a guitarist experiences differently (a guitar chord's "inversion" often just means playing a different string set). See Chord Inversions Explained and Piano Fingering Basics for Chords for the deeper mechanics — root position vs. first/second/third inversion, and the real 1-2-3-4-5 finger-numbering conventions this hub's individual chord pages assume.

Diminished, diminished 7th, augmented, and half-diminished (m7b5) qualities appear here because they're genuinely functional in tonal harmony — a fully diminished 7th chord's symmetric interval structure (stacked minor 3rds) makes it a common passing/pivot chord in classical and jazz piano repertoire, not a rare curiosity. Suspended (sus2, sus4) and add9 chords are common in pop and singer-songwriter piano writing specifically because they let a pianist hold harmonic ambiguity — neither clearly major nor minor — before resolving.

Voice leading — choosing which inversion or voicing to move to next so individual notes travel the shortest possible distance between chords — is a genuinely piano-specific concern in a way it rarely is on guitar, where the fixed physical shapes of open and barre chords constrain voicing choices far more than a pianist's free hand position does. A pianist comping through a progression will often deliberately choose a rootless or inverted voicing purely because it shares two or three notes with the previous chord, minimizing hand movement and producing a smoother-sounding transition — this is a real technique with a name (voice leading) covered in more depth on the Chord Inversions page, not a stylistic preference invented for this hub.

The sustain (damper) pedal is another genuinely piano-specific factor shaping how these 204 chords get used in practice: holding the pedal lets a pianist play a chord's notes in quick arpeggiated succession, or move between two chords with a brief overlapping blur, producing a texture no fretted instrument's diagram can represent, since the diagrams on this site show which keys are pressed, not how the pedal shapes the decay and blend between them.

Left-hand voicing conventions differ meaningfully by genre: classical and pop piano writing frequently keeps the root in the left hand and the rest of the chord in the right (a "boom-chuck" or block-chord pattern); jazz piano comping frequently drops the root entirely from the right hand's voicing on the assumption a bass player is covering it, freeing the right hand to focus purely on the 3rd, 7th, and whatever extension defines the chord's color. StrumAndKey's individual chord pages note which convention a given voicing reflects where it's relevant to that chord's real use.

Hand span is the one genuine physical constraint piano chords face that isn't about the keyboard's layout at all — it's about the player's own anatomy. A closed-position 13th chord's full theoretical stack can span more than an octave and a half, which is simply unreachable for most adult hands in one position; this is the real, practical reason extended-chord voicings on piano so consistently omit notes rather than a stylistic preference, and it's part of why this hub's 204-page roster deliberately excludes full 11th and 13th chords in the first place (see the Extended Chords hub for how guitar, with six strings spread across a wider physical area, handles the same chords differently).

Piano's 17-quality roster maps onto genuinely different frequency-of-use patterns across genres than guitar's wider 21-quality set does. Classical piano repertoire leans heavily on plain major/minor triads and their inversions, dim7 (for its modulation utility), and dominant 7ths; jazz and gospel piano lean hard into maj7, m7, 9, maj9, and m9 for their comping vocabulary; pop and singer-songwriter piano writing frequently favors add9 and sus2/sus4 for an open, unresolved character similar to how those same qualities function on guitar.

Every chord page here lays out that exact root-quality pair's note content and interval structure, character-and-use prose specific to the chord, practice guidance, and — where a genuinely useful closed-position voicing exists — a keyboard diagram. Finger numbering on piano runs 1 through 5 in both hands (thumb is always 1, pinky is always 5), and — unlike guitar, where the same finger number always refers to the same physical finger regardless of hand — piano fingering conventions genuinely differ between the right and left hand for the same chord shape, since the two hands are mirror images of each other reaching from opposite directions. Piano Fingering Basics for Chords covers the real standard fingering patterns this hub's individual pages assume, including the specific thumb-tuck technique used when a scale or arpeggio needs to cross beyond a five-note hand span.

Black and white key layout has a real, if often overlooked, effect on how confident a beginner feels moving between keys: C major's all-white-key triad is visually and physically simple to locate, while a key like Db major requires the hand to navigate a mix of black and white keys whose spacing isn't uniform (some adjacent keys are a whole step apart, some a half step). This unevenness is a genuine reason piano students often report certain keys "feeling harder" even when the underlying chord math (root-3rd-5th, same as any other major triad) is identical — the physical keyboard layout, not the theory, is what changes.

Ear training and piano chord recognition benefit from a specific piano-only advantage worth mentioning: because every key on a piano produces one, and only one, pitch (unlike a guitar string, where the identical pitch can often be found on more than one string/fret combination), there's no ambiguity about which physical key corresponds to which note in a chord voicing. That directness is part of why piano is frequently recommended as a secondary instrument for guitarists and other musicians specifically to build stronger interval and chord recognition skills.

Piano chord reading benefits from grand staff literacy in a way none of StrumAndKey's other instrument hubs require — chords are traditionally notated across two staves (treble for the right hand, bass for the left), and while this hub's diagrams communicate the same information visually without requiring standard notation reading at all, a pianist progressing toward reading written sheet music will eventually need to translate between the two systems. That's a genuinely separate skill from knowing which keys make up a given chord, which is what these 204 pages document directly. Most working pianists in popular styles read chord symbols (a lead sheet) rather than fully notated grand-staff parts day to day, which is the exact format this hub's 204 pages mirror directly.

Browse the full 204-page roster below, or narrow by quality family instead: the Major, Minor, Seventh, Extended, Suspended, and Diminished & Augmented Chords hubs each combine piano's own pages with the matching guitar and ukulele pages for that same quality.