BPM 與調性偵測
點擊或將音訊檔案拖入此處
支援 MP3 / WAV / FLAC / AAC / OGG · 100% 瀏覽器本機解析
MP3 · WAV · FLAC · AAC · OGG / UP TO 50 MB / LOCAL PARSING
01DROP THE FILE
Click or drag any audio file into the drop zone.
02LOCAL ANALYSIS
Tempo, key and confidence are computed on your device.
03MIX DECISIONS
Read compatible Camelot keys and delay sync values.
CODECS
100%
LOCAL, NO UPLOADSFORMATS
5
MP3 · WAV · FLACENGINE
v2.4
ESSENTIA WASMMAX FILE
50MB
UNDER 3 MIN工具介紹
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.
使用方法
- 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.
核心功能
- 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
常見問題
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.