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Detector BPM

Detecta automáticamente el tempo y la tonalidad

1Analyze a track

2Find BPM and key

3Prepare DJ sets

Arrastra un archivo de audio o haz clic para seleccionar

Compatible con MP3, WAV, FLAC, M4A

LA Studio's BPM Detector analyzes the tempo and musical key of songs directly in your browser. It is useful for DJ prep, remix planning, practice sessions, and organizing reference tracks by BPM.

Upload an audio file and the tool estimates BPM and key quickly with no sign-up required. Because processing runs locally in the browser, you can analyze tracks without sending audio to a remote server.

FAQ

Can it detect both BPM and key?

Yes, it analyzes both tempo (BPM) and musical key simultaneously.

How accurate is it?

AI-powered analysis achieves ±1 BPM accuracy for most songs.

Find the BPM and key of any song — free, no signup

Drop a song into the tool above and the AI analyzes its tempo (BPM) and musical key — for DJ beat-matching, remix prep, or checking the tempo before you practice along.

Unlike sites that look a song up in a database by title, this analyzes your actual audio file — so live recordings, your own tracks, and edited versions all measure correctly. Processing runs in your browser; the file is never uploaded.

Everything runs in your browser — your audio is never uploaded.

How it works

Upload a trackUpload the song you want to analyze. Processing runs in your browser.
Detect tempo and keyThe AI analyzes the audio and returns the BPM and musical key.
Use the resultsUse the detected BPM and key for DJ beat-matching, remixing, or practice.

What to do with the BPM and key

Knowing the key lets you transpose backing tracks, build harmonies, and pitch samples correctly; knowing the BPM helps with metronome practice, DJ set planning, and delay-time math (a quarter note at 120 BPM = 500 ms). After detection you can keep working on the track right in the browser DAW.

How it compares to database BPM sites

Compared to title-lookup sites like Tunebat:

	LA Studio	Database sites
Your own tracks / live recordings	Yes — analyzes the actual file	Only catalogued songs
File handling	Never uploaded	Lookup only, or upload for analysis
Editing afterwards	Yes — continue in the browser DAW	No

Competitor details as published, July 2026.

Frequently asked questions

Is the BPM and key detection free?

Yes — free, with no account needed. Analysis runs in your browser.

Does my song get uploaded?

No — the analysis is processed entirely in your browser; the file never leaves your device.

Does it work on my own tracks or live recordings?

Yes — it analyzes the actual audio rather than looking the title up in a database, so unreleased tracks, live takes and edits all work.