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Free Chord Finder

Find any chord on piano, guitar and ukulele. Pick a root and a type, or type a name like Dm7, and see its notes on the staff, its formula and the keys it belongs to, then hear it played.

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Guitar and ukulele

A guitar chord finder, a piano chord finder and a ukulele chord finder in one, online and free, with nothing to install. Tap a key or a dot to hear one note. The arrows under the guitar and ukulele show other places to play the same chord, from open position up the neck.

Reading the chord

  • The name. The letter is the root, the note the chord is built on. What follows says the type: m for minor, 7 for a seventh, and so on. A letter on its own means major.
  • The formula counts each note up from the root in the major scale: 1 3 5 is a major chord, 1 ♭3 5 a minor one. Switch Labels to Intervals to see these numbers on the keyboard and the fretboard. The chord formulas guide explains each type.
  • The spelling. Each note keeps its own letter, so C minor is C E♭ G, never C D♯ G. That’s why a few chords show notes like B♭♭ or B♯.
  • In these keys shows the chord’s Roman numeral in each major key it belongs to, as in chords in a key.

Practicing at home

  • Look up the chords of a song before you play it, then practice changing between them slowly.
  • Learn one chord in two places. Find the open shape, then a barre shape further up the neck, and play both.
  • Hear what changes. Play C, then Cm, then C7: one note changes each time.

Using it in class

  • On the projector. Show a chord on the staff and the keyboard together, so the class sees where the notes come from.
  • Mixed instruments. Piano, guitar and ukulele players can all read the same chord from one screen.
  • Chord building. Give the class a root and a formula, let them build the chord on paper, then check it here.

Share or embed

Put it on your class page

Set it up above the way you want it, then copy the code. Paste it where your site takes embed code: in Google Sites, Insert → Embed → Embed code. Most school websites and learning platforms have a similar box.

Size

The embed sets no cookies and collects nothing about the people who use it. Under it is a small “Chord finder by Trebly” link.

Telling families about it? Share Trebly with your school: a letter home with a QR code.

Preview

Questions

Which chords does it know?

Fifteen types on all twelve roots: major, minor, diminished, augmented, sus2 and sus4; the sevenths (7, maj7, m7, m7♭5 and dim7); and 6, m6, add9 and 9. Type them the way they’re usually written: Cm, C− or Cmin; Cmaj7, CM7 or CΔ7; Cm7♭5 or Cø.

What about slash chords like C/G?

The letter after the slash is the lowest note. Type C/G and you get C major, with a note to play G at the bottom.

Why does the guitar show more than one shape?

Every chord can be played in several places on the neck. The first shape is the one most players learn first; the others move up the neck. The ukulele works the same way.

Is it the same as the chord charts?

Yes. Where our guitar chord chart or ukulele chord chart shows a chord, the finder shows that shape first and says so. For every major and minor chord on the keys, print the piano chord chart.

Can it name a chord I play?

The chord finder works from the chord’s name. To go the other way, tap the notes you play into the free chord identifier and it names the chord, inversions included.