Song Key & BPM Finder
Upload a song and detect its key and BPM instantly
Instant BPM Detection
Upload any audio file and get accurate BPM results in seconds. No waiting, no manual tapping required.
Accurate Tempo Analysis
Powered by the Percival BPM estimator for reliable tempo detection across all genres, from slow ballads to fast EDM.
Multiple Audio Formats
Supports MP3, WAV, OGG, FLAC, and M4A files. Just drag and drop your audio file to get started.
Online BPM Finder
No downloads or installs needed. Audio is analyzed locally in your browser, so your files never leave your device.
Free to Use
Detect the BPM of any song for free. No account or signup required.
Private & Secure
Your audio is processed entirely on your device. Nothing is uploaded to a server, so your files stay private.
Why find your song's key and BPM?
Detecting the key and tempo of a song is essential for DJs, producers, and musicians. Our detector helps you mix tracks seamlessly, choose the right key for a remix, or match a backing track to your vocal range - all without guessing by ear.
With Karadeo's free BPM detector, just upload your audio file and detect accurate results in seconds. No account required - we support MP3, WAV, OGG, and FLAC formats.
Whether you're building a DJ set, producing a mashup, practicing an instrument, or creating karaoke videos - detecting the exact key and BPM of your music saves time and makes everything sound better.