Updated October 2026 · Key, tempo and your voice
Drop the audio into the free BPM finder, or tap along to the beat for 20 or 30 seconds and read the average. The tempo tells you how to set delays and how fast to retune a vocal.
Use the BPM finder. It analyses the file in your browser and shows the tempo.
Delay times, pre-delay and the speed of auto-tune retune all come from the tempo. A delay that matches the beat sounds like part of the music.
Songs with tempo changes or loose live timing give less reliable results. For those, tap by section.
Find the key and Camelot code of any song or beat. Runs in your browser, nothing is uploaded.
The same music felt at half the speed. A tempo finder may show 140 when you feel 70.
No. Tempo and key are separate.
Yes. It runs in your browser and nothing is uploaded.
