Find a chord

Use at least 2 notes for the most accurate results — sharps (#) and flats (b) are fully supported. The finder matches them against 336 chord types — triads, sevenths, extended chords, and more — with exact matches first, then the closest extensions. Open any result for fretboard, keyboard, ukulele and bass diagrams, progressions, and practice tools.

• Start with the bass note. The lowest note in a chord is often the root. Identify it first, then work upward to find the third and fifth.
• Listen for major vs minor. If the chord sounds bright and happy, try a major third (4 semitones above root). If it sounds dark or sad, try a minor third (3 semitones above root).
• Check for sevenths. Many songs use 7th chords. If the chord sounds jazzy or wants to resolve, add the seventh to your search. Dominant 7ths (♭7) are the most common.
• Scan the close matches. If your notes don't form an exact chord, the close-match group shows chords that contain your notes plus additional color tones.

How do I find a chord by notes?

Select 2 or more notes on the Keyboard or Notes pad, or type them into the notes field (e.g., C E G). The reverse chord finder matches your notes against 336 chord types and shows exact matches first, with close matches — chords containing your notes plus extra color tones — right below.

Can I enter a guitar, ukulele or bass shape instead of notes?

Yes. Switch the pad to Fretboard, pick Guitar, Ukulele or Bass, and tap the frets you are holding — tap above the nut to mark a string open or muted, and use the position stepper for shapes up the neck. Guitar and bass names use the lowest note (x32010 is C, 032010 is C/E). Ukulele keeps a plain name — the high G is not a bass, so 2010 is F. You can also type a shape like x32010 straight into the site search.

What is a reverse chord lookup?

A reverse chord lookup (or chord identifier) lets you identify a chord from the notes you are playing or hearing, rather than searching by chord name. It works by matching your selected notes against all known chord structures.

How many notes do I need to identify a chord?

You need at least 2 notes to get meaningful results. Triads (3-note chords like C major = C E G) will give exact matches. Adding more notes narrows results to specific extended chords like 7ths, 9ths, and jazz voicings.

Does the chord finder work with sharps and flats?

Yes. The note picker supports both sharp and flat notation (e.g., F# is the same as Gb). You can toggle between sharps and flats to match your preferred notation style.

Can I use this for guitar, piano, ukulele, and bass chords?

Yes. The chord finder identifies chords by their pitch classes, which are the same regardless of instrument. Each identified chord links to a detail page with instrument-specific diagrams for guitar, piano, ukulele, and bass.

How do I search chord progressions by Roman numerals?

Use the Progression Library. Type a Roman numeral pattern like I-V-vi-IV or ii-V-I and it searches 52 built-in progressions across 8 genres, with every chord linked and transposable to any key.