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Free Chord Finder Online

Find the chords in a song with a free chord finder that works in your browser. Drop in a recording and read the estimated chord progression with timestamps.

Where to go next

Chord Finder features

What it can and cannot label.

  • Three wooden cubes stacked together, in coral, pale wood and walnut, with a gold ribbon

    Triads

    The chord finder estimates major, minor and diminished chords with timestamps. Complex mixes vary, so check by ear.

  • Four plain glass plates stacked on a wooden desk, with a coral flower and a violet ribbon

    Seventh chords

    Matches common major, minor and dominant sevenths. Ninths, upper extensions and bass inversions are not supported.

  • A line of small wooden cubes on a sunlit desk, with a teal ribbon and a coral flower

    Progression list and timing

    Shows each detected change in a list with a timestamp. Median smoothing steadies fast frame-to-frame jumps.

  • A kraft folder with a blank card sliding out, beside a teal ribbon and a coral flower

    JSON export

    Download the chord list as JSON to keep with your session notes.

Who uses Chord Finder

  • A capo clipped on a sunburst electric guitar neck beside a small unlabeled rubber stamp

    Producers and beatmakers

    Find the chords in a sample so your bassline and pads fit.

  • A closed jazz fake book with a blank cream cover and a pencil on a piano lid

    Session musicians

    Get a rough chord chart from a demo before rehearsal.

  • A small keyboard with cream keys, a pencil and a closed blank notebook

    Songwriters and arrangers

    See how the harmony moves between verse and chorus and plan a reharmonization.

  • A patchbay with unlabeled jacks, a small analog compressor and coiled cables

    Engineers and remixers

    Map the harmony of unfamiliar material before tuning vocals or transcribing.

Why choose Chord Finder

  • Runs on your device

    Chord Finder works in your browser, so your files stay on your device unless you save a result.

  • Chords with timing

    The chord finder gives you a progression list with timestamps, not just a single label for the whole track.

  • Triads and seventh chords

    The chord finder estimates basic triads and common seventh chords, and lets you download the result as JSON.

  • Free to use

    Chord Finder is free and uses no credits. You only need an account to save results.

More tools to use with the Chord Finder

Browser tools on SampLab Pro run on your device; the AI tools need an account.

AI creation

Edit audio

Analysis tools

How to use the chord finder

  1. A hand setting down a plain kraft sleeve beside a ukulele and coral headphones
    1

    Drop in a recording

    Drag an audio file onto the chord finder. WAV, MP3, FLAC, OGG and AAC files up to 50 MB and 10 minutes long work.

  2. Four folded cloths in coral, teal, gold and violet, with a brass clip
    2

    Run the analysis

    The chord finder extracts chroma vectors, matches them with chord templates and smooths the result into a progression.

  3. A row of blank cards beside a kraft folder tied with a teal ribbon
    3

    Review the chords and download JSON

    Read the chord labels with timestamps on screen, or download the progression as a JSON file for your notes.

A chord finder that analyses audio in your browser

This chord finder estimates chord labels and a chord progression from an audio file, right in your browser.

Drop in a loop, a demo or a full track and the chord finder lists the chords it hears in order, with a timestamp for each change. It saves you from guessing by ear when you are learning a song or sketching a bassline.

The chord finder works automatically, so treat the result as a first draft and check it by ear.

Three wooden blocks stacked on a sunlit desk, with coral headphones and a coral flower

Chord finder or full audio software

Where a quick browser tool is enough, and where it is not.

NeedGood fitLimitsUse full software when
Harmonic outline of a clipEstimates dominant triads and basic sevenths.No ninths, altered extensions or bass inversions.You need exact voicings.
Quick chart for practiceGives a chord list for rehearsal.Complex mixes need an ear check.You need stems transcribed.
Short to medium filesHandles files up to 50 MB and 10 minutes.Longer or larger audio is not accepted.You work with hour-long recordings.

The chord finder uses chroma template matching, so its labels are estimates. It does not resolve complex inversions or extended chords.

How a chord finder works

A chord finder turns audio into pitch-class distributions. The page computes short-time Fourier transforms and folds the energy into twelve semitone bins, which gives a chroma vector for each time slice and ignores unpitched noise.

Each vector is compared with triad and seventh-chord templates, and median smoothing reduces jitter between frames. The output is a list of estimated labels with timestamps, not probabilities or voicings.

Three wooden blocks stacked on a sunlit desk, with coral headphones and a coral flower

Get more from the chord finder

The chord finder is built for harmonic sketching from clips up to 50 MB and 10 minutes, and outputs root-level triads and basic sevenths. Dense arrangements can blur the chroma, so ear-check the detected chords.

Ready to try Chord Finder?

Drop a recording into the tool above and see its chords with timestamps. The chord finder is free and runs in your browser.

Open Chord Finder

Chord Finder FAQ

Is this chord finder free?

Yes. The chord finder is free, needs no account and runs in your browser.

How accurate is the chord finder?

It depends on mix clarity, arrangement density and distortion. The chord finder finds prominent chords but does not guarantee bass inversions or exact voicings, so use the result as a reference and listen.

Which audio formats can the chord finder read?

WAV, MP3, FLAC, OGG and AAC files up to 50 MB and between 1 second and 10 minutes long.

Are my recordings uploaded when I use the chord finder?

No. The analysis runs in your browser session and your recording stays on your device.

Can the chord finder read MIDI files?

No, it analyses audio. To see chord labels for a MIDI file, use MIDI to Sheet Music, which adds basic chord symbols above the notes.