DJs
See the Camelot code, then pick a next track one step away for a smooth mix.
Find the key of any song
Key, relative key, Camelot code and BPM from one file.
Drop in an MP3, WAV, M4A or FLAC file and the Key Finder shows its key, relative key, Camelot code and BPM in seconds. The file is read in your browser and never uploaded.
Drop an audio file here or
MP3, WAV, M4A or FLAC, up to 20 MB
- Files never leave your device
- Free, no sign-up
- Results in seconds
One song, read for real
We ran “Windows Down”, a summer pop song made here, through the Key Finder.
Windows Down
Sunny summer pop · female vocals · 2:30
The song this result came from. Run it yourself.
B♭ major
The key: the note the song comes home to, and a bright, major sound.
G minor
The relative key. Same notes, so some apps name the song this way.
123 BPM, or 62 at half time
Tap along at half speed and you get 62. Both are right.
Key Finder at a glance
What it reads, what it shows and what it costs.
- Files
- MP3, WAV, M4A or FLAC, up to 20 MB
- Shows
- Key, relative key, Camelot code and BPM, each with a copy button
- Where it runs
- In your browser. The file is never uploaded
- Time
- A few seconds for most songs
- Price
- Free, no sign-up
How to find the key of a song
Three steps and a few seconds.
- 1
Drop in the song
Choose an MP3, WAV, M4A or FLAC file up to 20 MB from your device.
- 2
Read the key
See the key and its relative key, the Camelot code and the BPM. Copy any of them.
- 3
Use it
Tune your guitar, pick a key for your voice, plan a DJ mix, or make a new song in that key.
Who uses the Key Finder
Singers pick a key that suits their voice; DJs pick the next track.
Singers
Find the key before you practise, then move it up or down to suit your voice.
Keys that mix well with 6B
On the Camelot wheel, the safe moves are one step round or straight across.
5B and 7B
One step round the wheel: F major and C major. The change feels smooth.
6A
Straight across: G minor, the relative key. Same notes, a darker mood.
Two or more steps
It can clash. Use a short break or a drum-only bar between the songs.
Key, relative key or Camelot code?
Three names you will see for one song, and when each one helps.
| Key | Relative key | Camelot code | |
|---|---|---|---|
| What it says | Key: The home note and mode: B♭ major | Relative key: The minor key with the same notes: G minor | Camelot code: A number and a letter for mixing: 6B |
| Same notes? | Key: Yes | Relative key: Yes, every one | Camelot code: Yes, it names the same key |
| Use it to | Key: Sing or play along | Relative key: Read charts that use the minor name | Camelot code: Pick the next track in a DJ set |
| Why apps differ | Key: Most apps show this one | Relative key: Some show this one instead | Camelot code: DJ apps show this one |
If another app says G minor and we say B♭ major, you are both right: they are the same set of notes.
Questions about the Key Finder
Why does it say B♭ major when another app says G minor?
They are relative keys: the same seven notes, with a different home note. A happy, bright song usually reads as the major one; a dark, sad one as the minor one.
How accurate is the key finder?
Very accurate on songs with a steady beat and a clear home note. Songs that change key, speed up and slow down, or have no clear home note are harder, so check the result by ear.
What if the song changes key?
It shows the main key of the song. If the last chorus moves up, that part is in a new key; cut it out with the Audio Cutter and run it on its own.
Is my file uploaded?
No. The file is read in your browser and never sent to us. Close the page and it is gone.
Can I find the key by ear instead?
Yes. Hum the note the song comes home to, often the last note of the chorus, and find it on a piano or guitar. Then listen: bright usually means major, sad usually means minor.
How do I find the key of a song on Spotify or YouTube?
This page reads a file on your device, so a stream will not work here. Without a file, sing or hum the last note of the chorus and find it on a piano: that note usually names the key.
What does a code like 6B mean?
It is the key on the Camelot wheel that DJs use. B♭ major is 6B and its relative minor, G minor, is 6A. Songs with the same number, or one number apart, mix smoothly.
Which song can I test the key finder on?
Load Windows Down from the button under the drop zone. It reads B♭ major, 6B on the wheel, at 123 BPM.
Not covered here.Ask us something else
Make a new song in this key
Use the key and tempo you just found. Describe a mood, pick a voice and hear two full songs in about a minute.
Make a song in B♭ majorTwo free songs, no account needed.