Piano Chord Finder
Play the keys, get the chord. This piano chord finder matches the keys you click against major, minor, seventh and other chord types, names the chord, spells every chord tone, and tells you when your chord is an inversion like C/E. The lowest key you click sets the bass — just like on a real piano.
Typed notes without an octave are shown in root position; clicked keys detect inversions from the lowest key.
How to find a chord on piano
- Play the chord on the on-screen keys, lowest note first. Every key sounds so you can check you clicked what you meant.
- Read the name and the bass. If your lowest key is not the root, the tool answers with a slash chord (C/E, G7/F) and names which chord member sits in the bass.
- Check the spelling. Chord tones follow the chord's letter names, so the result may respell a black key (your A♯ becomes B♭ in an E♭ chord). The explanation says so explicitly.
Reading results as a pianist
On the piano, the same three keys can be three different chords depending on which note is lowest. C–E–G is C major; E–G–C is C/E, the first inversion; G–C–E is C/G, the second inversion. This tool listens to the vertical order of your keys and labels that difference — useful when you borrow voicings from a songbook or lead sheet and want to know what you actually played.
Black keys carry two names: the key right of C is both C♯ and D♭. Chord spelling follows letter lines and spaces, so a D♭ major chord uses D♭–F–A♭ while a C♯ major chord uses C♯–E♯–G♯ — E♯ being the white key E. Where it matters, the result shows both your key's name and the chord's spelling.
Piano FAQ
How do I find the name of a chord I played on piano?
Click the same keys on the on-screen keyboard, lowest note first. The tool matches the set of keys against major, minor, seventh and other chord types and shows the name, the chord tones with their interval roles, and an explanation of the match. Each key click also sounds the note, so you can compare by ear.
What does C/E mean on piano?
C/E (said “C slash E”) is a C major chord with E as the lowest note — the first inversion. On the piano you would play E as the bottom key, then G and C above it. Slash voicings keep bass lines smooth when moving between chords.
Which piano keys are C♯ and D♭?
The same black key — the one immediately to the right of C. Every black key carries two names (a sharp and a flat name): C♯/D♭, D♯/E♭, F♯/G♭, G♯/A♭ and A♯/B♭. Which name is correct depends on the chord, and the tool picks the spelling that fits the chord's letter logic.
Why does the tool spell a black key differently than I expect?
Chord tones are spelled by letter distance from the root. In a D♭ major chord the black key right of C is D♭; in a C♯ major chord the very same key is spelled C♯ and its third becomes E♯ (the white key E). The tool explains each respelling under the result.
Does the octave of the keys I click matter?
Yes — that is a feature. The lowest key you click is treated as the bass note, so playing E–G–C gives you C/E (first inversion) while C–E–G gives plain C major. Use the − / + buttons to move the on-screen keyboard range down or up.
Can I use this to practice chord inversions?
Yes. Play a chord in different orders — for example C–E–G, then E–G–C, then G–C–E — and watch the tool answer C, C/E and C/G. The explanation names which chord member is in the bass each time, which is exactly what an inversion is.
Does it work on a tablet or phone?
Yes. The keyboard scrolls sideways and every key keeps a comfortable touch size. Audio starts after your first tap, as mobile browsers require a user gesture before playing sound.