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Free Guitar Chord Analyser

Don't know what chord you're playing? Enter your finger positions and we'll identify it instantly using music theory.

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Or browse:All Guitar Chords

Common Chords

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GCDEmAmEAF

How the Chord Analyser Works

Our chord analyser uses music theory algorithms to identify chords from finger positions. Here's how it works:

  1. You enter your finger positions - Place markers on the fretboard diagram showing where your fingers are.
  2. We calculate the notes - Based on standard tuning (or custom tuning), we determine which notes are being played.
  3. We analyze the intervals - The relationship between notes (3rd, 5th, 7th, etc.) tells us the chord quality.
  4. We name the chord - Using music theory rules, we identify the chord name, including the root note and quality (major, minor, 7th, etc.).

What Chords Can It Identify?

Basic Chords

  • Major
  • Minor
  • Diminished
  • Augmented

7th Chords

  • Major 7
  • Minor 7
  • Dominant 7
  • Diminished 7

Extended Chords

  • 9th
  • 11th
  • 13th
  • Add9

Suspended Chords

  • Sus2
  • Sus4
  • 7sus4

Altered Chords

  • #5
  • b5
  • #9
  • b9

Other

  • 6th
  • Power chords
  • Slash chords

When to Use the Chord Analyser

Learning New Songs

Found a chord shape in a YouTube video but don't know its name? Enter the finger positions and we'll tell you.

Exploring the Fretboard

Experimenting with new shapes? See what chord you've discovered and learn its theory.

Transcribing Music

Figured out a chord by ear? Verify its name and find related voicings in our library.

Teaching Students

Help students understand the theory behind chord shapes by showing them the analysis.

Frequently Asked Questions

How does the chord analyser work?
Our chord analyser uses music theory algorithms to identify chords. When you place finger markers on the fretboard, we calculate the notes being played and determine the chord name based on the intervals between those notes.
Can it identify complex jazz chords?
Yes! Our analyser recognizes a wide range of chord types including major, minor, diminished, augmented, 7th chords, extended chords (9th, 11th, 13th), suspended chords, and more complex voicings.
Does it work for ukulele chords?
Absolutely. The chord analyser works for both guitar and ukulele. Just select the correct instrument when creating your diagram and the analysis will be accurate for that tuning.
What if my chord has multiple possible names?
Many chord voicings can be named in different ways depending on context. Our analyser shows the most common interpretation, but some chords may have alternate names (like C/E vs Em with added bass note).
See all frequently asked questions →

Related Tools

Chord Diagram Creator

Create professional chord charts with our free online tool.

Fretboard Diagram Maker

Create custom fretboard diagrams for chords, scales, and more.

Ready to Identify a Chord?

Open the editor, place your finger positions, and see instant chord analysis. Free forever.

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