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TRACKPEEL
KEY & BPM FINDER

Find the Key and BPM of Any Song

Drop a track and read its key, Camelot code, and tempo in seconds — then plan your harmonic mix. It is free, needs no sign-up, and your file is analyzed right in your browser, never uploaded.

Drop a song — or tap to uploadMP3 · WAV · M4A · FLAC · MP4 · MOV

Free, no sign-up. Your file is analyzed in your browser and never uploaded.

How it works

Key and tempo in three steps

01

Drop a file

Add an MP3, WAV, M4A, or FLAC — or a MP4/MOV video. It is read straight from your device and never sent anywhere.

02

We analyze the audio

The tool studies the harmonic content for key and the rhythmic pulse for tempo, all in a few seconds in your browser.

03

Read the result

Get the key, Camelot and Open Key codes, BPM, a confidence level, and a runner-up key — then copy any field with one click.

The basics

Key, BPM, and the Camelot wheel

A song's key is the home note and scale the melody and chords revolve around — for example A Minor or C Major. Its BPM (beats per minute) is the tempo: how fast the beat moves. Together they describe how a track will feel and how it will sit next to another track.

The Camelot wheel is a DJ notation that renames each key as a number from 1 to 12 plus a letter — A for minor, B for major — so 8A is A Minor and 8B is C Major. The wheel turns key theory into simple moves: stay on the same code, step one number, or flip the letter, and your tracks stay in tune.

For DJs

Harmonic mixing, made simple

Harmonic mixing means blending tracks whose keys agree, so transitions sound smooth instead of clashing. Once you know each song's Camelot code, the compatible moves are easy: same code, one number up or down, or the same number with the opposite letter.

Pair that with matched BPMs and your set flows. Found the key and tempo? The natural next step is to pull the track apart — use the stem splitter for vocals, drums, and bass, or the vocal remover for an instant instrumental or acapella.

Only need one number? Try the dedicated BPM finder for tempo with a tap-tempo option, or the song key finder to check a key on its own.

FAQ

Frequently asked questions

Is this key and BPM finder really free?
Yes. The analyzer is completely free with no sign-up, no account, and no limits. Your file is analyzed locally in your browser and never uploaded to a server, so there is nothing to pay for and nothing to wait in a queue for.
What are compatible Camelot keys?
On the Camelot wheel, the most compatible keys are the same code (a perfect match), the two neighbors on either side (one number up or down, same letter), and the same number with the opposite letter (its relative major or minor). Mixing within these moves keeps two tracks harmonically in tune.
How accurate is the key detection?
The tool analyzes the actual audio and reports a confidence level plus a runner-up key, so you can see how sure it is. It is accurate for most tracks, but key can be genuinely ambiguous on sparse, modal, or heavily processed material — when confidence is low, check the runner-up and trust your ear.
What file formats can I analyze?
MP3, WAV, M4A, and FLAC all work, and most MP4 and MOV video files decode their audio track too. Everything is processed on your device, so larger lossless files are fine and nothing leaves your computer.
Do I need to install anything?
No. The key and BPM finder runs entirely in your web browser — there is no app, plugin, or extension to install. Open the page, drop a file, and read the result.
Why find the key and BPM together?
DJs and producers need both to mix or build a set: BPM tells you whether two tracks beat-match, and key tells you whether they sound harmonically pleasant together. Getting them in one pass saves you switching between tools.