Free Online Key & BPM Finder
Record or upload a song, beat or vocal and get its key, tempo, time signature and mood in seconds. Free with a VoiceGem account.
Short clips work best — up to about a minute (3 MB). Your audio isn't saved.
How it works
1. Add a clip. Hum, sing, play a beat, or upload part of a track.
2. Get the details. We detect the key, tempo (BPM), time signature, mood and likely genre.
3. Make it a song. Use the results to build a full track from your own voice with VoiceGem AI.