Free BPM & Key Finder

Find the tempo, key, Camelot code, energy and loudness of any song. Free — No Sign-Up

Drop your audio file here
or click to browse — WAV, MP3, FLAC, OGG, M4A, AAC (max 100MB)
Before You Release

Make Sure Your Track Is Release-Ready

Tempo and key are just the start. Check your track for AI-generated content and clean any artifacts so it passes distributor and streaming screening.

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Free BPM & Key Finder

Find the Tempo and Key of Any Song in Seconds

The artefactFX BPM & Key Finder is a free tool that detects the tempo (BPM), musical key, Camelot code, energy and loudness of any track. Drop in a WAV, MP3, FLAC, OGG, M4A or AAC file and you'll get the numbers you need to mix, remix, sync or organize your library — no account required.

Everything runs locally in your browser: your file is decoded on your device and only a tiny, downsampled snippet is sent for analysis, so it's fast and private. Whether you're a DJ building harmonic sets, a producer matching a sample to your project, or a curator tagging a catalog, you get an instant, reliable read on every track.

How the BPM & Key Finder Works

Three steps. A few seconds.

1

Upload Your Track

Drop an audio file — WAV, MP3, FLAC, OGG, M4A or AAC, up to 100MB. It's decoded right in your browser.

2

Instant Analysis

A representative section of the track is analyzed for tempo and harmonic content — no waiting in a queue.

3

Get Your Numbers

Read the BPM, key, Camelot code, energy and loudness at a glance, then analyze the next track.

What We Detect

Everything You Need to Mix and Organize

The key figures for any track, in one place.

Tempo (BPM)

The track's beats per minute — essential for beatmatching, syncing to video, and lining up loops and samples.

Musical Key

The most likely key of the track, so you can match vocals, harmonize layers and avoid clashing samples.

Camelot Code

The Camelot wheel value (e.g. 8A) for fast, foolproof harmonic mixing between tracks with adjacent codes.

Energy & Loudness

A quick read on the track's intensity and RMS loudness, handy for ordering a set or balancing a playlist.

Use Cases

Made for Anyone Working With Music

From the DJ booth to the studio to the playlist.

DJs

Beatmatch and mix in key. Get the BPM and Camelot code of every track so your transitions stay smooth and harmonic.

Producers

Match a sample or acapella to your project's tempo and key before you drop it into the session.

Curators & Libraries

Tag tracks with BPM and key so your catalog is searchable and your playlists flow from one song to the next.

Content Creators

Sync music to your edits by lining up cuts to the beat — start by knowing the exact tempo of your track.

BPM & Key Finder FAQ

Everything you need to know about detecting tempo and key.

Upload your audio file (WAV, MP3, FLAC, OGG, M4A or AAC, up to 100MB). The tool detects the tempo in beats per minute automatically, usually in a few seconds. Your file is decoded in your browser and never stored.
The analyzer studies the harmonic content of your track and reports the most likely musical key, along with its Camelot code for harmonic mixing.
The Camelot wheel maps every key to a number and a letter (for example 8A). Tracks with the same or adjacent codes mix together harmonically, which is why DJs use it to build smooth, in-key sets.
Yes — it's completely free, runs in your browser, and needs no account or sign-up.
No. Your file is decoded locally in your browser, and only a small downsampled snippet is sent for analysis, then discarded. We don't keep your music.
That's a different question — use our free AI Music Checker to detect AI-generated content, or the AI Cleaner to remove AI artifacts before you release.