Analyze BPM and musical key

Input

Choose FileDrag media here or click to choose files.Choose File

Estimate BPM and musical key

Analyze an audio file in the browser and get heuristic tempo, key, confidence and detected energy peaks.

The result is a quick estimate for drafts; final music production should still be checked by ear.

Quick start

Estimate BPM, musical key and Camelot code locally, compare half and double tempo, and download CSV or JSON reports.

Choose a clear music file
Run local tempo and musical-key analysis
Review estimate confidence and export CSV or JSON

✓ Browser-side media tools are useful for quick analysis, previews and lightweight exports.

✓ Large video and audio files may need time to decode; smaller samples work faster in the browser.

✓ When the result is a command, run it on a machine with the required media tools or model installed.

✓ Review generated WAV, PNG, CSV and command outputs before using them in production workflows.

✓ Fullscreen mode on tablets and desktops gives more room for waveforms, tables and video previews.

✓ For final broadcast, podcast or advertising delivery, verify results with professional media tools too.

Supported formats

This tool accepts these formats. Uncommon containers and modern web formats may be normalized or converted on the server before processing.

Audio

3GA AAC AC3 AIF AIFF AMR AWB APE AU CAF EAC3 FLAC IMY KAR M4A M4P M4R MID MIDI MMF MKA MPC MP2 MP3 MPGA MXMF OGA OGG OMA OPUS OTA QCP RA RMI RTTTL RTX VOC WAV WEBA WEBM WMA XMF

A damaged file or a non-standard codec can still fail even when the extension is supported.

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