Dead as Disco Tools
Free browser tools for syncing your custom songs to the beat. Calculate BPM timings, calibrate your audio offset, and diagnose early or late hits on any platform.
All Tools
BPM Calculator
Turn a known BPM into milliseconds per beat, half-time, double-time, and bar duration. Manual entry only.
BPM Calculator →Song Sync Tool
Step-by-step calibration wizard for custom songs: pre-sync checklist, BPM setup, offset calibration, and test verification.
Song Sync Tool →Offset Calculator
Diagnose hits that feel early or late and get the Beat Offset to try for wired, Bluetooth, speakers, or Steam Deck.
Offset Calculator →