BPM Finder: Find song BPM and key without uploading your audio

Hey Product Hunt! 👋

I built BPM Finder to make checking a track’s tempo and musical key a simple browser task.

The idea is straightforward: select your audio files, get BPM and key estimates, and use them to help prepare a mix or a practice session. Your audio is analyzed on your device, so there’s no need to upload your recordings.

Here’s what you can do for free, without an account:

Analyze multiple tracks for BPM, musical key, and Camelot notation.
Preview waveforms, play back tracks, and adjust results.
Export results to CSV.
Use tap tempo, a metronome, and a Camelot wheel.

I’d love feedback from DJs, producers, and musicians. How do the estimates compare with tracks you already know? Does the workflow fit how you prepare your music? What would make it more useful?

If a result seems off, sharing the expected BPM or key and the result you got would help me investigate.

Thanks for trying BPM Finder. Happy to answer questions here!