BPM finder: find the tempo of any song
Free, no signup. We analyse the whole track, not a clip, and show the key as well.
Find key & BPM
Check one song's key and tempo, free.
How accurate is it?
Within 4% of the true tempo on 81.9% of 998 test tracks (95% CI 79.4–84.1%). Most misses are octave errors (half or double speed). How we measured it.
Tempo and key detection: Beat This! (Foscarin, Schlüter & Widmer, CPJKU); S-KEY (Kong et al., Deezer)
Need the vocals or the instrumental on their own? Try the vocal remover.
Frequently asked questions
How do I find the BPM of a song?
Upload the song above. StemX listens to the whole track and shows its tempo in beats per minute, usually within a few seconds.
Why does it show half and double time?
The most common tempo mistake is landing on half or double the real speed. Showing both neighbours lets you pick the one that matches how the song feels.
How accurate is it?
Within 4% of the true tempo on 81.9% of 998 test tracks (95% CI 79.4–84.1%).
Is it free?
Yes. You can check up to 20 songs a day without an account. Files can be up to 10 minutes and 120 MB.
Does it also find the key?
Yes. Every result shows the key too, when the model is confident enough to name one.