Free Song Key & BPM Finder
Drop a song and it detects the key, Camelot code and tempo in your browser - nothing is uploaded.
Your file is analyzed right here in your browser, nothing is uploaded to a server.
Key & BPM Finder - Find the Key and Tempo of Any Song, Free
This free key and BPM finder detects the musical key and tempo of any song right in your browser. Drop an MP3 (or WAV, M4A, FLAC or OGG) and it decodes the audio, reads the key, shows the Camelot code for harmonic mixing, and finds the BPM, all at once. Nothing is uploaded to a server, so it stays private and works the moment the page loads. No app, no sign-up.
- Drop any song.
- Drag in an audio file and the key and BPM finder reads it on the spot.
- Key, Camelot & BPM.
- Get the musical key, its Camelot code and the tempo together.
- Private & free.
- Everything runs in your browser, no upload, no account.
How to find the key and BPM of a song
Find the key, Camelot code and tempo of any track in three quick steps, no account needed.
Drop your song
Drag an MP3 or any audio file into the finder, or pick one from your library. It decodes in your browser.
Read the key & BPM
The finder shows the musical key, its Camelot code for harmonic mixing, and the tempo in beats per minute.
Fix half or double-time
If the tempo reads twice or half the feel, tap the corrector to drop or double it, the key stays the same.
Key & BPM Finder at a glance
- Major & minor keys detected
- 24
- Wheel code for every key
- Camelot
- BPM decimal precision
- 0.1
- Half / double-time fix
- ½ · ×2
- Files uploaded to a server
- 0
- Results in your browser
- Instant
A key and BPM finder built to read songs fast
Everything you need to find a song's key, Camelot code and tempo accurately, without uploading a thing.
- Detects the musical key
Drop a song and the finder reads its key, major or minor, using a chroma analysis of the whole track.
- Camelot code for mixing
Every key comes with its Camelot wheel code, so you can match keys and mix harmonically like a DJ.
- Finds the BPM too
The same drop reads the tempo to one decimal place, with a half / double-time corrector for octave errors.
- Private & in your browser
Audio is decoded locally and never leaves your device, no upload, no sign-up, no waiting.
Who uses a key and BPM finder?
Anyone who needs a song's key and tempo before they play, mix or cover it.
- DJs
Match keys and beatmatch sets harmonically with Camelot codes.
- Producers
Set a project's key and tempo from a reference track.
- Remixers
Find the key and BPM before building a remix or mashup.
- Singers
Check a song's key to know if it sits in your range.
- Guitarists
Find the key to pick the right scale or capo position.
- Music teachers
Confirm the key and tempo of a piece for students.
- Worship & bands
Transpose songs to the right key for your singers.
- Dancers
Know the tempo before choreographing a routine.
- Cover artists
Match the original key and BPM for an accurate cover.
Why use this key and BPM finder
A faster, more accurate way to find a song's key and tempo than guessing by ear.
- Key and tempo in one drop
No need for two tools, get the key, Camelot code and BPM from a single file, instantly.
- Works with your files
MP3, WAV, M4A, FLAC and OGG all work, straight from your device, or pick from your library.
- Free, instant & private
No account, no upload, no cost, the finder runs entirely in your browser the moment it loads.
How the key and BPM finder works
Trusted to find the key and the beat
“I drop a track in and get the key, the Camelot code and the BPM at once, harmonic-mixing prep that used to take two tools now takes one drop.”
Marcus Lindqvist
DJ
“Best key and BPM finder I've found online. I check a reference song's key and tempo, set my project, and start writing, and nothing gets uploaded.”
Priya Raman
Music producer
“I find the key of every song before rehearsal so I know how far to transpose it for our singers. Fast, accurate and free.”
Daniel Okafor
Worship leader
Key & BPM Finder FAQ
- What is a key and BPM finder?
- It's a free online tool that detects the musical key and tempo of a song. Drop in an audio file and it reads the key, shows the Camelot code for harmonic mixing, and finds the BPM, all in your browser.
- Is this key and BPM finder free?
- Yes, completely free with no account and no limits. It runs entirely in your browser, so you can analyze as many songs as you like.
- Do you upload my song?
- No. Your audio is decoded and analyzed locally in your browser and never sent to a server, so your files stay private.
- What is the Camelot code?
- The Camelot code is a DJ-friendly label for a key (like 8A or 8B). Keys with neighbouring codes mix harmonically, so it makes blending tracks in key much easier.
- How accurate is the key detection?
- It's accurate for most songs with a clear tonal centre. Because every major key shares notes with a relative minor, it can occasionally name the relative key, they share a Camelot number, so mixing still works. Trust your ear for the final call.
- Why does the BPM show half or double?
- Tempo detection can lock onto half or double the feel of a song. Use the half / double-time corrector to drop or double the number until it matches, the key does not change.
- What audio formats can I use?
- MP3, WAV, M4A, FLAC and OGG all work. Drop a file from your device or pick one from your library.
Found the key and BPM - now put them to work
Explore how your key relates to others on the free Circle of Fifths, or lock in the tempo you just found with the Online Metronome.