By ShinobiTools Team · Last updated: August 2026
Drop a track in and read its key — with the scale and the Camelot code DJs mix by. Free, no account, about two seconds, and the tempo comes with it.
The tonality is read straight off the audio: the root note, whether it's major or minor, and the Camelot code that turns those into the number-and-letter DJs actually mix by. The tempo is measured in the same pass.
Reliable on well-produced music with a clear tonal centre, and here is where it isn't:
When the audio is silent or too short, you get a plain "couldn't read this" instead of a key. We'd rather show nothing than a confident wrong answer.
The Camelot wheel renames the 24 keys as 1–12 plus A (minor) or B (major), so "E♭ minor works with G♭ major" becomes "6A works with 6B". Same number, or one step either way, and two tracks are harmonically compatible — that is the whole trick. Mixing your own edit? StemGrab gives you the acapella and instrumental from the same file, and key, BPM and stems together explains the full pass. Only after the tempo? The BPM finder is the same tool with the tempo up front.
Yes — no account, no e-mail, no cap. It runs on our own hardware.
DJ shorthand for the key: a number 1–12 plus A for minor or B for major. Tracks with the same code, or one number apart, mix together harmonically.
It can, mostly between a key and its relative major or minor, which share the same notes. On unclear audio it says so instead of guessing.
Yes, in the same pass — both numbers come back from one upload.
No. Your upload is deleted the moment it's processed and the stems are wiped from the server within 45 minutes. Nothing is stored, shared or used to train anything — see privacy.