Free Online Key Finder, BPM Finder and Tempo Analyzer
This tool analyzes your audio file and returns the track’s BPM, musical key, Camelot code, energy, danceability and mood. Use it to prepare DJ sets, match vocals to beats, remix songs, organize playlists or check the tempo and key before releasing music.
Find BPM
Detect the tempo of a song in beats per minute so you can mix, remix, loop, edit or match tracks accurately.
Find Song Key
Identify the musical key of a track so vocals, samples, beats and melodies sit together without clashing.
Get Camelot Code
Convert the detected key into Camelot notation for harmonic DJ mixing and smoother song transitions.
How to Find a Song’s Key, BPM, Tempo and Camelot Code
Use the analyzer in three simple steps. You do not need to install software or create an account.
1. Upload Audio
Drag and drop your song into the upload box or click Choose File to select an MP3, WAV, FLAC or AAC file.
2. Analyze the Track
The tool checks tempo, rhythm, harmonic content and music features to estimate key, BPM, Camelot and mood data.
3. Read Your Results
Review BPM, key, Camelot notation, energy, danceability and happiness in a clear results table.
What the BPM, Key, Camelot and Music Metrics Mean
The analyzer gives you practical music data you can use for DJing, remixing, songwriting, playlisting and production.
BPM / Tempo
BPM means beats per minute. It tells you how fast a song is and helps with DJ beatmatching, editing, looping and remix timing.
Musical Key
The key tells you the tonal center of the track. Producers use it to match vocals, samples, basslines, melodies and chords.
Camelot Code
Camelot notation turns keys into DJ-friendly numbers and letters, making harmonic mixing easier during set preparation.
Energy
Energy estimates how intense a track feels based on musical features such as tempo, rhythm and overall movement.
Danceability
Danceability estimates how suitable the song is for movement, mixing, party playlists and rhythm-focused use cases.
Mood / Happiness
Mood gives a broad read on the emotional tone of the track. Use it to organize playlists, sets and song references.
Supported Audio Formats
Upload common audio files and get BPM, key, Camelot and music analysis results without installing software.
MP3
Best for quick analysis of songs, demos, downloads and compressed music files.
WAV
Best for producers, engineers and artists working with high-quality audio exports.
FLAC
Best for lossless libraries where you want strong analysis quality without compression loss.
AAC
Useful for mobile, Apple-style exports and modern compressed audio files.
Are Uploaded Songs Stored?
Audio files are used for analysis only. The tool processes the uploaded file to return BPM, key, Camelot and music metrics, then the file is not kept as a public track or shared with other users.
Accuracy and Limitations
Key and BPM detection is algorithmic, so results can vary between tools. Remasters, live recordings, tempo changes, key changes, noisy mixes and very short files can affect the result. Use the detected BPM, key and Camelot code as a strong starting point, then confirm by ear when preparing a professional DJ set, remix or release.
Why Finding a Song’s Key and BPM Matters
Whether you are a DJ, producer, vocalist, remixer or playlist curator, knowing a track’s key and tempo helps you make cleaner musical decisions.
DJs: Mix in Key
Use the Camelot wheel to mix harmonically. Compatible keys help transitions feel smoother and reduce harsh clashes between songs.
Producers: Match Vocals and Samples
Upload acapellas, instrumentals or beats and use key detection to make vocals, samples and chords work together more naturally.
Artists: Pick the Right Beat
Knowing the key and tempo helps you find beats that fit your vocal range, flow, delivery and release direction.
Playlist Curators: Organize by Feel
Use BPM, energy, danceability and mood to group tracks into better playlists, DJ folders and listening flows.
Camelot Key Finder for DJs and Producers
The Camelot Wheel is a harmonic mixing system that helps DJs move between compatible musical keys. It converts traditional keys into simple number-and-letter codes.
Outer vs Inner Ring
The outer ring uses B for major keys. The inner ring uses A for minor keys. Example: 8B is C Major and 8A is A Minor.
Compatible Keys
For smoother harmonic mixing, move one number up, one number down or switch between A and B in the same number.
Energy Changes
Changing keys can make a transition feel lifted, darker, smoother or more intense depending on how far you move on the wheel.
| Camelot Key | Musical Key | Compatible Keys | Relative Major / Minor |
|---|---|---|---|
| 1A | Ab Minor | 12A, 2A | 1B |
| 1B | B Major | 12B, 2B | 1A |
| 2A | Eb Minor | 1A, 3A | 2B |
| 2B | F# Major | 1B, 3B | 2A |
| 3A | Bb Minor | 2A, 4A | 3B |
| 3B | Db Major | 2B, 4B | 3A |
| 4A | F Minor | 3A, 5A | 4B |
| 4B | Ab Major | 3B, 5B | 4A |
| 5A | C Minor | 4A, 6A | 5B |
| 5B | Eb Major | 4B, 6B | 5A |
| 6A | G Minor | 5A, 7A | 6B |
| 6B | Bb Major | 5B, 7B | 6A |
| 7A | D Minor | 6A, 8A | 7B |
| 7B | F Major | 6B, 8B | 7A |
| 8A | A Minor | 7A, 9A | 8B |
| 8B | C Major | 7B, 9B | 8A |
| 9A | E Minor | 8A, 10A | 9B |
| 9B | G Major | 8B, 10B | 9A |
| 10A | B Minor | 9A, 11A | 10B |
| 10B | D Major | 9B, 11B | 10A |
| 11A | F# Minor | 10A, 12A | 11B |
| 11B | A Major | 10B, 12B | 11A |
| 12A | C# Minor | 11A, 1A | 12B |
| 12B | E Major | 11B, 1B | 12A |
How BPM and Key Detection Works
BPM and key detection tools analyze rhythmic and harmonic patterns in an audio file. Tempo estimation looks for beat timing and pulse patterns. Key detection looks at pitch content, harmonic balance and tonal center. The final result is an estimate designed to help with mixing, remixing, production and music organization.
Rhythm Analysis
The analyzer checks beat movement and timing patterns to estimate BPM and tempo.
Harmonic Analysis
The tool examines pitch and harmonic content to estimate the likely musical key.
Camelot Mapping
The detected key is mapped to Camelot notation so DJs can quickly plan harmonic transitions.
Music Metrics
Energy, danceability and mood provide extra context for playlists, DJ sets and creative decisions.
Research Behind Music Information Retrieval
BPM, key and audio feature extraction are part of the wider field of Music Information Retrieval. The page references public research and open MIR work so users can understand the technical background behind audio analysis.
Frequently Asked Questions
Yes. This free tool works as a key finder, BPM finder, tempo finder, BPM checker and song key detector in one. Upload a track and get its musical key, Camelot number, BPM and tempo without using separate tools.
The analyzer supports MP3, WAV, FLAC and AAC audio files.
Different tools use different algorithms to calculate key and BPM. Results can vary depending on audio quality, tempo changes, remastered versions, live recordings, noisy mixes and how each system estimates harmonic and rhythmic information.
Yes. DJs can use the detected BPM, key and Camelot code to prepare harmonic mixes, match tempos and organize sets before performing.
Camelot is a DJ-friendly key notation system used for harmonic mixing. It converts musical keys into numbers and letters so DJs can find compatible tracks more easily.
Key and BPM detection is an estimate based on audio analysis. It is useful for DJing, remixing, playlisting and production, but no tool is perfect. For professional use, confirm important results by ear.
Audio files are used for analysis only. The tool processes the file to return BPM, key, Camelot and music metrics, then the upload is not kept as a public track or shared with other users.
Yes. Producers and artists can use the detected key and BPM to match vocals, acapellas, samples, beats and instrumentals more accurately.
Danceability estimates how suitable a track is for movement based on rhythm, tempo, beat strength and overall groove.
You can use the result to plan a DJ mix, organize your library, match vocals to a beat, remix a track, split stems with the AI Stem Splitter, or remove vocals with the Vocal Remover.