Tempo and key · Updated 2 October 2026
Find a song’s BPM and key
with its Camelot code alongside.
Choose a song in the BPM and key finder to see its estimated tempo, musical key and Camelot code. Read the alternative results too, then listen to check which interpretation fits the music.
BPM means beats per minute: it describes the pace of the beat. The key describes the music's tonal centre, such as C major or A minor. A Camelot code is a compact way of labelling a key, often used when organising music for DJ mixes. These results can help you choose a starting tempo or transpose a practice track.
Analyse a song file
- Choose a musical section. Use a saved audio or video file with a clear beat and pitched instruments. The tool needs at least six seconds of music. A full phrase is more useful than an isolated drum hit or spoken introduction.
- Select Choose a file. Open the recording in the finder. MP3, WAV, M4A, MP4 and MOV are supported examples, subject to your browser's ability to read the file.
- Read Estimated tempo. Note the BPM and whether the page calls it steady or tentative. It also shows possible half-time and double-time values.
- Read Estimated key. Check the key name, its Camelot code and the alternative key shown underneath. A tentative label is a reason to listen more closely, not to force the first answer.
- Check the analysed range. The page tells you how much audio it used. Longer files can be analysed from their opening section, so a result may not describe a later chorus or key change.
The analysis runs on your device. The finder reports results on the page; you can play the analysed audio and choose another file when you want to compare recordings.
Why do I see both 70 BPM and 140 BPM?
The same rhythm can be counted with a slower or faster pulse. At 70 BPM, one counted beat spans the time of two beats at 140 BPM. Listen for the pulse you naturally count and the way the phrases fall. Use the interpretation that suits the musical task instead of treating the larger number as automatically more accurate.
A sparse introduction, a half-time chorus or a changing live performance can make tempo less clear. If the page says No steady beat found, try a longer section with a more definite rhythm.
What if the key seems wrong?
Music can change key, use ambiguous harmony or contain sections that suggest different tonal centres. Speech and percussion alone may not provide enough pitched information. The page can report No clear key found rather than assigning a reliable key to every sound.
Compare the estimate with the melody and accompaniment. If the passage you need comes later in the file, make a separate excerpt with the audio cutter and analyse that version. Keep enough music to include the phrase and its resolution.
Use the result for your next step
To sing in a more comfortable key, open the song in the pitch changer and adjust pitch while leaving speed unchanged. To make an instrumental, use the karaoke maker. The finder's own handoff buttons pass the complete original file to the next tool, even when only its opening section was analysed.
Use the numbers as a starting point, then audition the actual transition, vocal or backing track you are preparing.
This one runs right in your browser. Pro adds the AI tools too: vocals, stems, captions and more.