BPM & Key Finder
Upload any track to estimate its tempo and key in your browser. Results are estimates and vary by source.
Find the tempo and key of any track
Runs in your browser. Your audio never leaves your device, and it is free with no sign-in.
Why Choose Our BPM & Key Finder
Estimate the Tempo
Get an estimated BPM for any track so you can beatmatch, sync loops, or set a practice tempo.
Estimate the Key
See the estimated musical key and scale so you can transpose, harmonize, or find compatible tracks.
Private by Design
The analysis runs in your browser. Your audio never leaves your device, and there is no sign-in.
Turn It Into a Song
Send the tempo and key into MeloLab Studio to build a new track around the idea.
Perfect for Every BPM & Key Finder Creator
Beatmatch and Mashup
Estimate the BPM of two tracks so you can line them up for a DJ set or mashup.
Learn and Practice
Find the estimated key and tempo of a song you want to cover or practice along to.
Plan a Production
Pick a target tempo and key from a reference track before you build your own arrangement.
Related AI Music Tools
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YouTube BPM Finder
Estimate the tempo and key of a YouTube track. Export the audio you have rights to, drop it in, and the analysis runs in your browser.
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About BPM & Key Finder
MeloLab's BPM and key finder estimates the tempo and musical key of a track so you can match tracks, set a metronome, plan a mashup, or learn a song. Drop in an audio file and the analysis runs in your browser: your audio never leaves your device, there is no sign-in, and it is free. Both values are estimates and vary by source. A clean track with a steady beat estimates more reliably than a dense mix, a live recording, or a song with tempo and key changes, so trust your ears before you rely on a number. Use the estimated BPM to beatmatch, sync loops, or set a practice tempo, and use the estimated key to transpose, harmonize, or find compatible tracks. When you are ready to create, send the idea into MeloLab Studio to build a new song around that tempo and key.
Frequently Asked Questions
Found the tempo and key?
Turn a reference track's tempo and key into a brand new song with MeloLab Studio.
