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Find the key and BPM of any song, free

By ShinobiTools Team · Last updated: July 2026

Drop in a track and see its key, its Camelot code and its BPM — free, no account, no watermark. You get the seven stems from the same upload.

Split your track free →

Key, scale, Camelot and tempo in one pass

Upload a song and StemGrab reads the tempo and the tonality straight off the audio, then shows them above your stems: the key with its scale (F minor, A♭ major), the matching Camelot code DJs use to mix in key, and the BPM. Nothing to switch on — it runs on every upload.

• The musical key plus major or minor
• The Camelot code (4A, 8B…) for harmonic mixing
• The tempo in BPM
• All seven stems from the same upload, at no extra step

How to find the key and BPM of a song

1. Open StemGrab and drop your track in.
2. Wait while it's analysed and separated on our GPU, usually under a minute.
3. Read the key, Camelot code and BPM in the badge above the player.
4. Download the stems too if you need them — same upload, no extra wait.

How accurate is it, honestly

The estimate is read from the audio, so it's as good as the recording. On well-produced tracks with a steady tempo it lands right; here's where any detector, ours included, gets it wrong:

• Half or double time. A 140 BPM track with a half-time feel can read as 70, and vice versa. Count a bar yourself if the number looks off.
• Relative major and minor share the same notes, so C major and A minor are genuinely hard to tell apart — the Camelot code lands in the same slot either way, which is what matters for mixing.
• Live, rubato or tempo-drifting recordings have no single BPM to find.
• Key changes mid-song are reported as one key: whichever dominates.

When there isn't enough usable audio to be sure, the badge simply doesn't appear — we'd rather show nothing than a confident wrong answer.

Why DJs and producers want both

Two tracks mix smoothly when the tempos are close and the keys are compatible; the Camelot wheel is the shortcut for the second part — same number, or one step around, and they sit together. Producers use the same two numbers to pitch a sample into the project or set the tempo before dropping stems in. Since you get the acapella and the instrumental from the same upload, the mashup and the numbers you need for it arrive together. Building something bigger? Stems to remix covers the full set.

Common questions