BPM & Key Detector
Detect tempo, key, and audio file properties for DJing, production, or music analysis.
Free & unlimited
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BPM from taps
Tap the button or press Space or T
All processing happens in your browser. No data is sent to any server.
About this tool
- 1
Upload audio
Select any audio file (MP3, WAV, FLAC, etc.).
- 2
Analyze
The tool detects tempo (BPM) and musical key.
- 3
View results
See the detected BPM, key, and confidence level.
- Longer audio clips (30+ seconds) give more accurate BPM detection.
- Songs with clear drum patterns are easiest to analyze.
- The key detection works best with harmonic content (vocals, chords).
- BPM detection
- Key detection
- Confidence score
- Multiple formats
- Find the BPM of songs for DJ mixing.
- Detect the key of a track for remix or mashup projects.
- Match songs with similar tempos for playlists.