Find the BPM and Key of Any Song

The tool uses multi-resolution autocorrelation with spectral band weighting, analyzing bass, midrange and full spectrum separately. This achieves 90-95% accuracy for most music genres. For songs with unclear rhythm (ambient, free jazz), accuracy may be lower — the confidence meter indicates reliability.

The Camelot Wheel (also known as Open Key notation) is a color-coded circle used by DJs for harmonic mixing. Each key is assigned a number (1-12) and a letter (A for minor, B for major). Songs with adjacent numbers or the same number mix harmonically.

Harmonic mixing is a DJ technique where you blend songs in compatible musical keys for smooth transitions. Songs that are harmonically compatible sound musical when mixed together, while incompatible keys can clash and sound dissonant. Use our speed changer to match tempos between tracks.

Yes. The tool analyzes beat accent patterns to detect common time signatures: 4/4 (most pop/rock/electronic), 3/4 (waltz), 6/8 (compound duple) and 2/4 (march). This feature is rare among online BPM detectors.

Switch to Batch mode, drop up to 20 files at once. Each file is analyzed sequentially and results appear in a table. You can export all results to CSV for use in DJ software like Rekordbox, Serato or Traktor.

Tap Tempo lets you find BPM manually by tapping a button (or pressing any key) to the beat of music you hear. After 4+ taps, it calculates the average BPM. Useful when you hear music playing but don't have the audio file.

Yes — any format your browser can decode: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS, WebM and more. The tool uses the Web Audio API, so format support depends on your browser.