Hear it, don't just read it
Numbers are a start, but the built-in click plays along with the actual beats we found, so you can immediately tell the analysis is right.
Free audio tool
Free Song Key & BPM Finder
Drop in a song and get its key and tempo without guessing. LoopMastering reads the actual beats — not just one averaged number — so you also get the Camelot code for mixing, the time signature, and a click you can play along with.
Find my key and BPM- Key + Camelot code
- Real beat-by-beat tempo
- Play your song with a click
Upload a track, get the key and tempo.
Works with mixes, masters, beats, and demos. You get the key, BPM, Camelot code, time signature, and a player that clicks along with your song's actual beats.
Made for mixing and practice
The Camelot code tells DJs what blends, the relative key helps writers and producers, and the click track helps anyone practicing along.
Honest when it's unsure
Ambient, spoken word, or heavily detuned material can fool any analyzer. When the read isn't solid, we say so instead of guessing.
For the moment you need to know what you're working with
Someone sends a track, you dig out an old demo, or you're lining up a set — and you need the key and tempo now, not after fifteen minutes of tapping along.
For DJs and sets
Get the BPM and Camelot code so you know what mixes cleanly before you're standing in front of people.
For producers and writers
Match samples, pick a key for the topline, or figure out what that unlabeled bounce from last year actually is.
For practice and covers
Learn songs in the right key and play along with a click that follows the actual recording.
How the free key & BPM finder works
Upload an audio file
Start with any song, beat, mix, or demo in a common audio format.
Read the key and tempo
See the key with its Camelot code, the BPM, and the time signature — with a clear note when the tempo varies.
Play it with the click
Hit play to hear your song with a beat-matched click, or download the click track as a WAV.
Why check key and BPM on LoopMastering?
The same analysis runs inside our Stem Splitter, where it drives a beat-synced metronome over separated stems. The free finder gives you the readout; the splitter gives you the full practice rig.
- Beat-by-beat tempo reading, not one averaged guess
- Key with Camelot code and relative key
- A click track you can hear and download
Free key & BPM finder questions
Short answers for DJs, producers, and players who want the key and tempo without a theory lecture.
What does the key & BPM finder tell me?
It reads your file and shows the musical key (with the Camelot code DJs use), the tempo in BPM, and the time signature — plus whether the tempo stays steady.
How accurate is it?
Very good on most music with clear harmony and drums. On ambient, spoken, or heavily layered material it can be unsure — and it will tell you instead of bluffing.
What is a Camelot code?
A shorthand DJs use for keys, like 8A for A minor. Songs with neighboring codes usually blend well together.
Will this change my audio?
No. It analyzes the file and shows a readout with a playable click. Your file is not modified.
Stop guessing keys and tapping tempos.
Upload the track, read the key and BPM, and hear the click lock in with the beat.