Find the key and BPM of any song, free

Last updated: September 2026

It reads the audio in about two seconds and changes nothing. Want the stems too? The link under the result splits the same song.

Related: Free LALAL AI alternative.

One pass over the audio returns both numbers, free, with no account and no daily cap. It's a song key and BPM finder online that works the same on a phone as on a desktop, and the free tier is the only one you need for it. Think of it as a key BPM finder and BPM counter in one: it does the job of an online BPM calculator or online BPM counter, but on the real audio instead of a title. If you've used Tunebat BPM lookups before, the difference is that this reads your own file rather than a database entry.

Your upload is deleted the moment the numbers appear. Want the stems from the same track as well? The full tool is on the home page.

Key, scale, Camelot and tempo in one pass

Before a track earns a slot in a set, most DJs check two things: will the tempo ride along with the rest, and will the key clash. This gives you both from one drop: the key with its scale, the Camelot code for the harmonic check, and the BPM for the tempo check, instead of running the file through two separate tools to screen one track. Split the same track afterwards and the numbers stay above your stems.

• The musical key plus major or minor, and its Camelot code (4A, 8B…) for the harmonic check
• The tempo in BPM for the beatmatching check
• Both from one upload: no second pass, no second file limit
• All seven stems from the same track in a separate split, whenever you want them

How to find the key and BPM of a song

1. Drop your track into the box above (MP3, WAV, M4A, FLAC or a video file).
2. Wait about two seconds: this reads the audio, it doesn't separate it.
3. Read the key, the Camelot code and the BPM.
4. Want the vocals, drums and bass as well? The link under the result splits the same song, free.

How accurate is it

Both numbers are read from the same audio, so both inherit the same limits: a half-time BPM reading and a relative-major/minor mix-up are the two common ones, covered in full on the BPM finder and the key finder. The one thing specific to using them together: when both readings are borderline at once, a tempo that could be half or double, on a track whose key sits right between relative major and minor, trust your ears over either number before you drop it into a set. On silence, or a clip too short to measure, you get "couldn't read this" instead of a guess for either one.

Why DJs and producers want both

Screening a folder of candidate tracks before a gig is really two filters at once: which ones sit near the set's tempo, and which ones won't clash key-wise with what's already in. Running both through separate tools doubles the work for every track you reject. Producers use the same two numbers to pitch a sample into a project or set the tempo before dropping stems in. If you want the acapella or the instrumental for a mashup, split the track afterwards and the numbers you need for it are already in hand. Used as a quick song checker before a gig, it lets you find key and BPM in one go for every track on the list. Building something bigger? Stems to remix covers the full set. MP3 to MIDI turns the same song into a file with the tempo and key already baked into the notes, one track per instrument.

Checking a track against a BPM range

Planning a slot by tempo, say songs at 120 BPM or a BPM range of 100-120? Looking specifically for songs that are 120 BPM? This tool reads one file at a time rather than scanning a library, but it's the fastest way to check whether a candidate actually fits. Upload it, and the exact reading tells you whether it lands on 120 or just close to it. There's no catalogue of songs with 120 bpm to browse here. For a list of 120 bpm songs, a genre-tagged playlist on a streaming service is quicker, and then you can check each 120 bpm song here before it goes in the set. The same goes for faster material: think a track belongs with 200 bpm songs? Drop it in and see. Producers use it as a quick BPM tester too: test BPM on a rough mix before committing studio time to it. Want to change BPM or key rather than read them? That's the song key tool and the pitch changer, a key changer and BPM changer pair, once you have the reading.

Also works as a standalone mp3 bpm finder

Only need the tempo today? This doubles as a plain MP3 BPM finder: drop in the file and read the number, with the key alongside if you want it. To find BPM of MP3 files, nothing needs converting first, and the reading comes back in about two seconds. If you'd rather tap for BPM along with the beat, the tap tempo page does that: online tap BPM with the space bar. Tap to BPM in a few seconds. Tapping BPM out by hand works fine for a steady rhythm, but the upload is more precise on anything that drifts. An online BPM detector counts across the whole song instead of from a few taps.

A tempo is the number of beats per minute. How do you calculate BPM by hand? Count beats for 15 seconds and multiply by four. That's how to calculate BPM without a tool, and how to check BPM when you have no file to upload. With a file, the detector does the counting across the whole song, which is how to detect BPM reliably rather than from one 15-second window. Use it to find the BPM of any song in your library, find song BPM for a set list, or find BPM of song files you were sent; it's also the quickest way to find tempo and key, or check tempo against a set, in one go. If a track changes BPM partway through, it reports the tempo that fits most of the song.

Looking up a song you already know

Plenty of visitors already know the song and just want the numbers. If you came here looking for the Beat It BPM, or any other title, we won't guess a number for a song we haven't read: upload the actual track and get the real key and BPM in about two seconds. Most dance tracks sit in the 120-130 BPM range, and the result shows what the detector weighed up before it settled on one number. The song BPM and key finder reads the audio you upload and does not look up titles, so an unreleased track works the same as a released one.

Two related searches this page can't do directly. A song sample finder can mean tracing which track a sample was lifted from (that needs a lineage database like WhoSampled, not this page) or getting the key and tempo to pitch a sample correctly into a new project, which is exactly what an upload here returns. And can you find BPM YouTube videos directly, from the link? No: a YouTube or Spotify link won't work instead of a file, so how do I find BPM of a song that only lives online? You need the audio file; if you have the video file, extract audio from video first, then drop that file into the box above.

Common questions

More guides: karaoke maker · make an instrumental · practise along with the real band