01
Analyze common audio files
Use MP3, WAV, M4A, AAC, FLAC, or OGG audio up to 50 MB.
MusicWave analysis tool
BPM & Key Finder
Drop in a track to estimate its tempo, key, scale, Camelot notation, and meter in your browser.
0generation credits used
50 MBmaximum source file
6common audio formats
Localrecent analysis history
What the tool does
Estimate tempo and key without generation credits
Use the returned BPM, scale, Camelot code, and meter as estimates you can verify by ear.
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Estimate the tempo
See an estimated BPM and tempo label, then tap along or listen again when the rhythm is ambiguous.
03
Find key and Camelot notation
Get an estimated key, scale, and Camelot code for planning a mix or musical transition.
04
Keep recent results nearby
Reopen recent analyses stored for your browser or account without uploading the same file again.
05
Run the analysis in the browser
The page analyzes the selected file on your device rather than spending music-generation credits.
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Check the estimate by ear
Tempo and key detection can be wrong on live, sparse, modulating, or rhythmically complex recordings. Verify the result before a final mix.
Three steps
Choose a supported file, run the browser analysis, and check the tempo and key estimates.
Choose the audio
Drop in a supported file from your device, up to 50 MB.
Run the analysis
Let the browser inspect the rhythm, pitch content, and other musical signals.
Review and copy
Check the BPM, key, scale, Camelot code, and meter, then copy what you need.
Before you start
Give the analyzer a clear musical section
Steady drums and audible harmony are easier to read than sparse intros, live timing, or songs that change key.
Use a clear section
A steady part with audible drums and harmony is usually easier to analyze than a quiet intro or breakdown.
Watch for half-time and double-time
A 70 BPM feel may also be counted near 140. Choose the reading that matches how you hear the pulse.
Confirm songs that change key
A track with modulation or ambiguous harmony may not have one reliable key for its full length.
Ways to use it
Prepare a mix, remix, or music library
Prepare a DJ transition
Compare tempo and Camelot notation before deciding which tracks may mix well together.
Set up a remix session
Use the estimate as a starting point for your project tempo and key, then line it up by ear.
Catalog a music library
Record tempo and key notes for tracks you want to sort, practice, or revisit later.
Social proof
What Users Say
Real feedback from DJs and producers using our BPM & key finder
Super accurate BPM detection! Makes mixing so much easier. I can instantly find the right tracks that match the tempo I'm looking for.
The key detection is spot on! It's saved me countless hours when creating mashups. Now I know exactly which tracks will harmonically mix.
Essential tool for every DJ! Quick, accurate, and reliable. I use it to prep all my sets and organize my music library by key.
Questions
BPM & Key Finder FAQ
Straight answers about the current tool, its limits, and what happens next.
What audio formats can I analyze?+
Upload MP3, WAV, M4A, AAC, FLAC, or OGG files up to 50MB for instant analysis.
How accurate is the BPM detection?+
Our AI provides highly accurate BPM readings for most genres. Complex or shifting tempos may require manual verification.
What is Camelot notation?+
The Camelot Wheel is a DJ tool that assigns each key a number (1–12) and letter (A for minor, B for major). Adjacent keys mix harmonically.
Can I analyze multiple tracks at once?+
Currently, you analyze one track at a time. Your recent analyses are saved in history for quick reference.
Do I need an account to use this tool?+
You can analyze tracks for free without an account. Sign up for unlimited history and faster processing.
Why can a BPM result look doubled or halved?+
Some rhythms can be counted in half-time or double-time. For example, the same pulse may feel like 70 BPM or 140 BPM, so choose the value that matches the beat you hear.
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Ready to analyze the track?
Drop in a supported file up to 50 MB. The analysis uses no generation credits.
Analyze a Track