Song key and BPM finder
Upload your audio to find the key and tempo.
Upload your track and instantly analyze its musical fingerprint. Whether you're a DJ preparing a set, a producer creating a remix, or a musician learning a song, this tool helps you understand exactly how a piece of music is constructed.
Simply upload your audio and receive:
- Song key detection
- BPM analysis
- Relative key suggestions
- Compatible scales
- Camelot key information
- Tempo classification
- Time signature estimation
- Energy analysis
- Waveform preview
No account required. No software installation. Upload and analyze directly in your browser.
Find the key of any song
Knowing a song's key is essential for mixing, remixing, arranging, and performance.
The Song Key and BPM Finder detects the most likely musical key and displays a confidence score so you can quickly verify the result.
Identify:
- Major keys
- Minor keys
- Relative keys
- Harmonic relationships
- Compatible scales
Whether you're matching vocals, creating mashups, or producing a cover version, accurate key detection helps everything sound musical and in tune.
Detect BPM instantly
BPM, or beats per minute, determines the speed of a song.
Our BPM analyzer automatically detects the tempo of your audio file and classifies its musical feel.
Use BPM detection to:
- Beatmatch tracks
- Build DJ playlists
- Create mashups
- Produce remixes
- Sync effects and delays
- Match samples and loops
- Analyze reference tracks
Understanding tempo is one of the fastest ways to improve workflow when producing music.
Compatible with popular audio formats
Upload most common audio formats directly from your computer.
Supported formats include:
- MP3
- WAV
- FLAC
- OGG
The tool processes audio quickly and returns detailed musical information in seconds.
Perfect for DJs
Professional DJs rely on key and BPM information to create smooth transitions between tracks.
The tool provides:
- BPM detection
- Camelot wheel compatibility
- Relative key analysis
- Harmonic mixing information
This makes it easier to organise playlists, prepare sets, and create seamless mixes.
Built for music producers
Music producers often need fast access to key and tempo information.
Use the Song Key and BPM Finder to:
- Analyze reference tracks
- Match samples to projects
- Find compatible loops
- Create remixes
- Build mashups
- Tune vocals correctly
- Select scales for melodies and solos
A few seconds of analysis can save hours of guesswork.
Understand harmonic compatibility
The tool doesn't just identify the key.
It also displays related scales, relative keys, and Camelot wheel information to help you make better musical decisions.
This is especially useful when:
- Mixing tracks together
- Creating DJ sets
- Layering samples
- Writing melodies
- Producing remixes
- Building chord progressions
Understanding harmonic compatibility leads to cleaner and more professional sounding productions.
Each song analysis includes:
Song key
The most likely musical key detected from the audio.
BPM or tempo
The estimated tempo in beats per minute.
Relative key
The harmonically related major or minor key.
Compatible scales
Useful scales that work naturally with the detected key.
Camelot key
Industry-standard harmonic mixing notation for DJs.
Energy rating
An estimate of the track's overall intensity.
Time signature
The most likely meter used throughout the song.
Audio waveform
A visual overview of the uploaded audio file.
Manual tempo counting and key detection take time.
The Song Key and BPM Finder automates the process and provides detailed musical insights immediately.
Whether you're a beginner learning music theory or a professional preparing a performance, accurate musical data helps you work faster and make better creative decisions.