Drag audio file here
or click to select (MP3, WAV, AAC, FLAC)
How to find song key and BPM
Three simple steps – no install, no signup.
Drop your file
Drag & drop the audio or click to select (MP3/WAV/FLAC).
In‑browser analysis
Processing runs locally – your audio never leaves the browser.
Results & tips
Get BPM, key and a relative key – perfect for Auto‑Tune/Waves Tune/MetaTune.
Other tools
FAQ
How to quickly find a song key online?
Just drag & drop your file and click Analyze. Within seconds you'll see the key and scale.
How to check a song's BPM?
Use our analysis or try our BPM Tapper / Tap tempo tool
Can I find the key and BPM of a home‑recorded song?
Yes. You upload your file (e.g., MP3/WAV) and the analysis runs locally in your browser.
How to set up Auto-Tune?
Enter your beat's detected key and scale in Auto‑Tune. For fast correction set a low Retune Speed (e.g., 0–10).
How to set Waves Tune?
Set the detected key and scale from your beat. Adjust Speed/Note Transition for vocal naturalness.
How to set MetaTune?
In MetaTune, enter the detected key and scale. Experiment with Correction Amount and Speed parameters for the desired vocal effect.
Are my audio files safe?
Yes, all analysis happens directly in your browser. Your audio files are never sent to a server.
What audio file formats are supported?
We support popular formats like MP3, WAV, FLAC, AAC.