Free tool

Name that chord. Click the notes, get the name. Or pick a chord and see its notes.

Click two or more keys.

Chord formulas

Each chord as degrees of the major scale on its root, with the notes on C.

ChordSymbolFormulaIn C
majorC1 3 5C E G
minorCm1 ♭3 5C E♭ G
dominant seventhC71 3 5 ♭7C E G B♭
major seventhCmaj71 3 5 7C E G B
minor seventhCm71 ♭3 5 ♭7C E♭ G B♭
suspended fourthCsus41 4 5C F G
suspended secondCsus21 2 5C D G
diminishedCdim1 ♭3 ♭5C E♭ G♭
augmentedCaug1 3 ♯5C E G♯
power chordC51 5C G
major sixthC61 3 5 6C E G A
minor sixthCm61 ♭3 5 6C E♭ G A
added ninthCadd91 3 5 9C E G D
minor added ninthCm(add9)1 ♭3 5 9C E♭ G D
half-diminishedCm7♭51 ♭3 ♭5 ♭7C E♭ G♭ B♭
diminished seventhCdim71 ♭3 ♭5 𝄫7C E♭ G♭ B𝄫
dominant seventh suspended fourthC7sus41 4 5 ♭7C F G B♭
minor-major seventhCm(maj7)1 ♭3 5 7C E♭ G B
dominant ninthC91 3 5 ♭7 9C E G B♭ D
major ninthCmaj91 3 5 7 9C E G B D
minor ninthCm91 ♭3 5 ♭7 9C E♭ G B♭ D
six-nineC6/91 3 5 6 9C E G A D
augmented seventhC7♯51 3 ♯5 ♭7C E G♯ B♭
dominant seventh flat fiveC7♭51 3 ♭5 ♭7C E G♭ B♭
augmented major seventhCmaj7♯51 3 ♯5 7C E G♯ B
dominant seventh flat nineC7♭91 3 5 ♭7 ♭9C E G B♭ D♭
dominant seventh sharp nineC7♯91 3 5 ♭7 ♯9C E G B♭ D♯
ninth suspended fourthC9sus41 4 5 ♭7 9C F G B♭ D
added eleventhCadd111 3 4 5C E F G
dominant eleventhC111 3 5 ♭7 9 11C E G B♭ D F
minor eleventhCm111 ♭3 5 ♭7 9 11C E♭ G B♭ D F
dominant thirteenthC131 3 5 ♭7 9 13C E G B♭ D A
major thirteenthCmaj131 3 5 7 9 13C E G B D A
How it works

01

Click the notes

Press keys on the keyboard in any order. The lowest one is the bass note, which decides the inversion.

02

Read every name

The chord is named as soon as the notes make one: the most likely name first, then the other ways to write the same notes, such as Am7 and C6/A.

03

Or work backwards

Switch to Show a chord, pick a root and a type, and see and hear its notes, spelled the way they're written.

Questions

What does a slash chord like C/E mean?
A C major chord with E as its lowest note: the first inversion. The letter after the slash is the bass note. Inversions keep the chord's name and character but change how it moves from the chord before and to the chord after.
Why does one set of notes have more than one name?
Because the same notes can be heard from different roots. A, C, E and G are Am7 with A in the bass and C6 with C in the bass. The bass note and the music around it decide which name a musician would use, so the finder lists the root-position reading first.
What is the difference between sus2, sus4 and add9?
Sus chords replace the third with the second or fourth, so they're neither major nor minor. Add9 keeps the third and adds the ninth (the second an octave up), so it is still major.
Can it name a chord with a missing fifth?
Yes. Players often leave the fifth out of seventh and ninth chords. If no complete chord fits your notes, the finder tries the reading without a fifth and marks it '(no 5th)'.
Is it free?
Yes, with no sign-up. It runs in your browser and nothing is sent anywhere.

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