AUDIO

BPM & Key Finder

Estimate tempo, musical key and scale notes from your recording.

Audio up to 100 MB and 10 minutes.

Open BPM & Key Finder ↗

How it works

  1. Choose your audio file. Your media stays in your browser.
  2. Wait for tempo and key estimates, then review alternative readings.
  3. Listen and check the suggested key or half/double tempo before using it.

Before you start

Can it identify every song’s key?

No. Ambiguous harmony, changing keys and solo vocals can produce uncertain results. The detector estimates major and minor keys, not ragas.

Why are there multiple BPM readings?

The same pulse can be interpreted at half or double tempo. Use the reading that matches the musical phrasing.

No account required for these beta tools. Processing uses your device; performance depends on your browser and available memory.