Audio
A track's tempo in beats per minute, plus its key and Camelot code.
I
Add a track and hit “Analyze”. The beats are detected and the tempo counted, and the key comes along for free. Nothing is uploaded: it all runs in your browser.
DJs use BPM to beatmatch, instructors and dancers to pick music that fits the routine, musicians to set a metronome. Need a different tempo? “Change the key” opens a tempo slider too, and the new BPM is worked out for you.
II
MP3, M4A, WAV, FLAC
BPM, key and Camelot
Without changing the key
III
In one analysis
Camelot code included
The file stays on your device; the server steps in only when the browser can't
No watermark, no subscription
IV
For some tracks the “right” tempo is debatable: you can clap along at 70 or at 140. The detector picks the most likely one; if you hear it differently, multiply or divide by 2.
Yes. No sign-up, no subscription, no watermark. In the browser, files up to 1 GB. When the server is needed: without an account, up to 100 MB, 10-minute videos and 60-minute audio; signed in, up to 500 MB, 30-minute videos and 3 hours of audio.
Files are processed right in your browser and never uploaded. If the browser can't handle one (a rare format, a very large file or an old browser), it goes to our server instead and is deleted about an hour after it's ready.
Find a track's key and tempo, then shift it to suit your voice if you need to.
Slower for practice or dancing, without the warped sound.
Move a song into your vocal range without speeding it up or slowing it down.
Several tracks in one file, back to back or with a DJ-style crossfade.
Drop an audio file here
or choose one on your device
MP3, M4A, WAV, OGG, FLAC, or a video — we'll take its sound
Files are processed right in your browser and never uploaded. If your browser can't handle one, our server does it
