Find the key of an MP3
Use this page when your music file is already saved as an MP3 and you want to quickly estimate its key.
Find key of MP3 files
MP3 Key Finder
Upload an MP3 file and estimate its musical key. The result also includes BPM and Camelot Key.
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Upload your audio file
MP3, WAV, FLAC, or common M4A. Max 50MB.
Audio is used only for BPM and key analysis. See the privacy policy for details.
How to Find Song Key & BPM
It only takes a few steps.
1
Prepare Files
Choose an MP3, WAV, FLAC, or common M4A audio file under 50MB.
2
Upload Audio
Drag and drop your file or click the upload area to select it.
3
Wait for Analysis
The analyzer estimates BPM, Key, and Camelot code.
4
Receive Results
Review the result, export CSV, or analyze another song.
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Frequently Asked Questions
Can I find the key of an MP3 online?
Yes. Upload the MP3 file and the analyzer estimates its musical key.
How is my MP3 used?
The MP3 is used only for BPM and key analysis.