BPMKeyFinder is a browser-based BPM and key analyzer for DJs and producers, offering precise, private tempo and key detection.
BPMKeyFinder is a music analysis tool designed for DJs, producers, music editors, and educators to accurately identify the BPM and key of any audio track directly in the browser. It solves the challenge of verifying tempo and harmonic compatibility before live mixing or production work, providing reliable and private analysis without uploading files to the cloud. Using Essentia.js compiled to WebAssembly, BPMKeyFinder delivers precise tempo, musical key, and Camelot code detections efficiently and securely on your device.
BPMKeyFinder is a browser-based BPM and key analyzer tool that helps DJs and producers identify the tempo and key of audio files with precision. It operates entirely locally, respecting privacy, and offers features that support harmonic mixing and music production workflows.
This tool is suitable for touring DJs, music producers, editors, educators, and anyone who needs fast and accurate tempo and key analysis for audio tracks across formats like MP3, WAV, and FLAC.
The engine uses Essentia.js, a proven audio analysis library benchmarked in research and live DJ sets. It cross-checks tempo estimates, normalizes BPM ranges, and provides confidence levels to confirm the reliability of detected keys and tempos.
BPMKeyFinder offers a free, fully client-side analysis process with privacy guaranteed. Some advanced features like CSV export and track history may require a Pro subscription.
Getting started only requires dragging and dropping your audio file onto the web interface or selecting it via file browser. The analysis runs immediately in your browser with no setup required. For more details, visit the official platform information.