How to Find the BPM and Key of a YouTube Song (Without Downloading It)
You hear a beat on YouTube and want to know its tempo and key - to write over it, to mix into it, or to set up your Auto-Tune before the session. You do not need to download anything or open a DAW: paste the link into BeatDL's BPM Finder or Key Finder and the analysis runs in your browser.
Paste a YouTube link and get the tempo in seconds.
Find the BPM →How to Find the BPM of a YouTube Song
- Copy the video's link from YouTube (Share → Copy link works, so does the address bar).
- Open the BPM Finder and paste it into the box at the top.
- Press Analyze. The audio is fetched, decoded and measured in your browser - nothing is saved.
- Read the tempo, plus the top five candidates with confidence bars.
How to Find the Key of a YouTube Song
- Open the Key Finder and paste the same link.
- Press Analyze.
- You get the key, the relative key that shares its notes, and the tuning offset in cents if the beat is detuned.
- Press 🎚️ Auto-Tune settings for the exact values to dial into your pitch correction.
Want the file too? The main downloader does both at once and writes the BPM and key into the file name.
How Accurate Is It?
We test the tempo detector against 254 FL Studio projects whose real project tempo is known. On that set it lands within 1 BPM on 87% of tracks and exactly right on 78%. The misses are mostly the classic half/double-time confusion - a 140 BPM trap beat read as 70 - which is why the five candidates are shown: the right answer is usually one of them at exactly half or double.
Why Do I See Two Keys?
Every major key has a relative minor built from exactly the same seven notes - A major and F# minor, C major and A minor. A detector can measure which notes are present very reliably; deciding which of the two the song "feels like home" on is harder, and both work identically for writing a melody or setting Auto-Tune. BeatDL shows its pick first and the relative alongside.
You may also see a key written as G#/Ab. That is one note with two names - tuners and plugins pick either spelling, so BeatDL shows both.
What Does "+12¢" Next to the Key Mean?
It means the beat is tuned 12 cents (a hundredth of a semitone each) above standard A = 440 Hz. Small, but enough to make a vocal tuned to 440 sound slightly off. Here is how to set Auto-Tune for it, and here is more on detuned beats.
Frequently Asked Questions
Can I find the BPM of a YouTube video without downloading it?
Yes. Paste the link into BeatDL's BPM Finder or Key Finder and press Analyze. The audio is analyzed in your browser and dropped afterwards - no file is saved.
How accurate is the BPM detection?
On 254 FL Studio projects with a known tempo, BeatDL is within 1 BPM on 87% of tracks and exact on 78%. Most misses are half or double the true tempo, which the candidate list covers.
Why does BeatDL show two keys?
A major key and its relative minor contain the same seven notes, so they are often indistinguishable by ear and both work for writing or tuning. BeatDL shows its pick first and the relative alongside.
Why is a key shown as G#/Ab?
G# and Ab are the same note with two names. Different tuners and Auto-Tune versions use different spellings, so both are shown.
Does it work with YouTube Shorts and music.youtube.com links?
Yes - watch links, youtu.be links, Shorts and YouTube Music links all work. Playlist-only links are not analyzed there - use the Playlist Downloader for those.