Uranium WavesArtist Tools
Audio analysis

BPM + Key Analyzer

Upload a song and get an approximate tempo, musical key and energy readout directly in your browser.

Audio stays on your device
01 Upload audio
MP3 · WAV · M4A where supported
Ready. Choose a file to begin.
02 Results
Approximate musical analysis
Tempo—BPM
Key—Major / minor estimate
Energy—Relative RMS level
Confidence—Agreement across analysis windows
Note: This is an estimation tool, not a forensic music-analysis system. Tempo changes, sparse percussion, live timing, unusual tunings and highly chromatic music can reduce accuracy.