Free BPM & Key Analyzer
Upload your tracks to detect tempo, musical key, and Camelot code for harmonic mixing.
Free, no signup — supports MP3, WAV, FLAC, OGG, M4A, AIFF.
Upload Audio to Analyze
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MP3, WAV, FLAC, OGG, M4A, AIFF
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How to Find a Song's BPM & Key
Get tempo, key, and Camelot code from any track in three steps.
Upload Your Track
Drop in an MP3, WAV, FLAC, OGG, M4A, or AIFF file.
Analyze
The tool detects the tempo, musical key, and Camelot code automatically.
Mix Harmonically
Use the BPM and Camelot code to match and blend tracks for DJ sets and production.
track.mp3
128.0 BPM
Key: A minor
Camelot: 8A
Tempo Detection
Accurate BPM detection using librosa beat tracking with sub-BPM precision.
Key Detection
Chromagram analysis with Krumhansl-Schmuckler algorithm for accurate key identification.
Camelot Wheel
Get the Camelot code for easy harmonic mixing — know which tracks blend together.
Frequently Asked Questions
How does the BPM analyzer detect tempo?
It uses librosa beat tracking to analyze the audio's onset and rhythm, returning a precise beats-per-minute value with sub-BPM accuracy — no tapping required.
How is the musical key detected?
The analyzer builds a chromagram of the track and matches it against the Krumhansl-Schmuckler key profiles to identify the most likely key and mode (major or minor).
What is the Camelot code used for?
The Camelot wheel maps each key to a code (like 8A or 5B) so DJs can mix harmonically. Tracks with adjacent Camelot codes blend smoothly, helping you build seamless sets.
What audio formats are supported?
You can upload MP3, WAV, FLAC, OGG, M4A, and AIFF files. The analyzer returns the BPM, key, and Camelot code for each track.
Is the BPM & Key Analyzer free?
Yes. It is completely free with no signup — upload a track and get its tempo, key, and Camelot code.
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