Key & Camelot Finder

Overview

Drop a track to find its key. The tool first measures how the recording is tuned, because a track 30 cents sharp or a band tuned to 442 would otherwise come out a semitone off. The result appears on the Camelot wheel, where the keys you can mix into are the sectors right next to yours. It all runs in your browser.

Harmonic mixingFind the key of each track and build a set that moves between neighbouring sectors.
Remixes and bootlegsKnow the key before you choose a sample or a synth patch.
Check a library tagTags from rips or stores are often missing or wrong, so read the audio instead.

Guides

01 How to find the key and tempo of a track

Set

Audio Tools 17

Neighbours

01 Audio Transcriber 02 Generate AI Music 03 Audio Converter 04 BPM Detector 05 DJ Booth 06 Extract Audio from Video

Specification

Command: audio.key_finder
Set: Audio
Input: MIXED
Output: —
Max file: 1GB
Batch: single file

MPEG WAV FLAC MP4 OGG OPUS AAC WEBM

Runtime

Engine: ffmpeg-wasm 0.12
Threads: — workers
Isolated: —
WebGPU: —
Memory: —

Transport 0 B

Your file is opened, worked on and saved inside this tab. This tool has no upload step, so your file has nowhere else to go.

Keys

Search: ⌘K
Panels: ⌘1 · ⌘2
Full width: F
All keys: ⌘/

How it works

Drop a track

It's decoded on your device. Nothing is uploaded.

Read the wheel

The detected key fills one sector, and the three that mix with it are shaded.

Plan the mix

The same number on the other ring is the relative major or minor, the safest move on the wheel.

Frequently asked

What is the Camelot wheel?

A numbering of the 24 keys that puts keys that mix well next to each other. One step clockwise is a fifth up, minor keys are on the inner ring and major on the outer. From 8A you can move to 7A, 9A or 8B.

Why does it sometimes give the relative major instead of the minor?

A relative major and minor share all seven notes, so their scores often land within a few percent of each other. Then confidence is low, and the tool shows the runner-up as well instead of pretending to be sure.

Does it handle tracks that are not tuned to A440?

Yes. The tuning offset is measured from the audio before the key is worked out, so a track that's sharp or flat still gets the right key. The offset is shown in cents.

Is my music uploaded?

No. Everything is decoded and analysed in your browser.

Keys

Search: ⌘K
Panels: ⌘1 · ⌘2
Full width: F
All keys: ⌘/