BPM et Key Finder
Cliquez ou faites glisser un fichier audio ici
MP3 / WAV/Flac/AAC / OGG pris en charge · Analyse locale du navigateur à 100 %
MP3 · WAV · FLAC · AAC · OGG / UP TO 50 MB / LOCAL PARSING
Click or drag any audio file into the drop zone.
Tempo, key and confidence are computed on your device.
Read compatible Camelot keys and delay sync values.
À PROPOS DE CET OUTIL
Free Online BPM & Key Finder for DJs and Producers
Detect tempo (BPM), musical key, and Camelot notation from any audio file — entirely in your browser. Built for harmonic mixing prep: find compatible keys and tempos before your next set or production session.
Comment ça marche
- 01Upload an audio file (MP3, WAV, FLAC, AAC, OGG) or pick one from Library after sign-in.
- 02Essentia.js analyzes beat onsets and chromagram in WebAssembly — BPM (with half/double toggle) and key appear in seconds.
- 03Use the Camelot mixing guide to plan harmonically compatible transitions with adjacent wheel codes.
Fonctions clés
- Browser-local analysis — your audio stays on your device
- BPM detection with half/double tempo correction
- Musical key plus Camelot (Open Key) notation
- Harmonic mixing cheat sheet for DJ transitions
Questions fréquentes
Musictool uses Essentia.js — the same MIR algorithms used in research and production tools, compiled to WebAssembly. Most commercial tracks return stable BPM and key; live recordings or heavily processed audio may need manual half/double BPM adjustment.