Online Chord Finder
This online chord finder does two things: explore any chord — see its notes, hear it, find it on the piano and the fretboard — or click the keys you're holding and let the finder tell you what that chord is.
Why Use a Chord Finder?
Chords are vocabulary, and every musician runs into a word they can't quite place. A chord finder removes the guesswork at the exact moment it slows you down — when you're writing, learning, or transcribing.
✍️ Songwriting and producing
You like the sound of C–E–G–A but don't know what to call it or where it can go next. Select the notes, see "C6 — and Am7/C", and immediately know which names and progressions fit.
🎓 Learning piano and guitar
Chord charts only give you one shape. Seeing every chord tone marked across the fretboard — and every inversion on the keys — teaches you why the shape works, not just where to put your fingers.
👂 Transcribing by ear
You've picked out the notes of a chord from a recording. Click them in, get the name in return, and audition both candidates when the notes are ambiguous — the fastest way to settle "is that a IV or a ii?"
How to Use the Chord Finder
How to Find a Chord by Name
- Pick a root (C, F♯, B♭…) and a quality (major, m7, sus4, add9…).
- Read the chord's notes with their degrees — root, 3rd, ♭7th, 9th — and flip through the inversions to see how the stack rearranges.
- Press Play to hear it as a block chord or arpeggio, and study it on the keyboard and the fretboard below.
How to Identify a Chord by Ear
- Switch to Identify chords and click the keys you're holding — each key sounds as you add it.
- The finder names every chord those notes form; when the same set has several names (C6 / Am7), all of them are listed with the bass note marked.
- Click a result to load it into the explorer with full notes, fretboard and playback.
Features
🎹 18 qualities × 12 roots
From triads and sus chords to half-diminished and major 9ths, that's 216 named chords. Every inversion of each is one click away.
🔎 Reverse identification
Click any combination of keys and get every chord name that set of notes can wear, bass note included.
🎸 Dual instrument views
Each chord lights up on a three-octave piano and across a six-string guitar fretboard, roots glowing brightest.
🔊 Instant audition
Hear any chord as a block or an arpeggio, synthesized locally — click single keys or fret positions to check each voice.
🔀 Inversions, one click
Rotate the stack and watch the keyboard, note degrees and playback rearrange around the new lowest note.
🔒 Private and free
No accounts, no uploads, no installs — the whole dictionary and synthesizer run in your browser.
What Musicians Say About the Chord Finder
"The reverse finder alone is worth it. I click in what I hear, get the name in a second, and the C6-versus-Am7 thing finally makes sense to me. My songwriting got noticeably faster."
Maya T.
Singer-Songwriter, 3 albums self-produced
"I teach beginner guitar and piano. Showing students every place a chord tone lives on the neck — instead of one frozen shape — has completely changed how fast they understand the instrument."
Daniel O.
Guitar & Piano Teacher, 40+ students
"Transpose-friendly, instant sound, no sign-up wall. I use it daily to check voicings before committing them to a session, and the arpeggio mode is great for ear-training drills."
Priya R.
Session Keyboardist & Producer
Frequently Asked Questions
How does the chord identifier work?
Click the notes you are holding on the keyboard and the finder compares that exact set of pitch classes against every root and quality it knows. When several chords share the same notes — C6 and Am7, for example — it lists all of them, marking the bass note, and you can click any result to explore it.
Which chord types does the finder support?
Eighteen qualities in all twelve keys: major, minor, diminished, augmented, sus2, sus4, power chords, 6ths, dominant 7ths, major 7ths, minor 7ths, minor-major 7ths, half-diminished, diminished 7ths, add9, dominant 9ths and major 9ths — plus every inversion.
Can I hear the chords?
Yes. Every chord can be auditioned as a block chord or as an arpeggio, synthesized locally in your browser. Clicking a piano key or a fretboard position plays that single note, so you can check each voice by ear.
Does the chord finder work for guitar players?
Yes. Every chord is mapped onto a six-string fretboard in standard tuning, marking every position where a chord tone lives — the root glows brightest — so you can build your own voicings instead of memorizing one fixed shape.
Is the chord finder free?
Yes — free, no registration, nothing installed, and all processing happens locally in your browser.