bpm-finder-cli

https://github.com/bpmfinder/bpm-finder

bpm-finder-cli is a small Ruby command-line tool for converting BPM values into practical delay times, converting milliseconds back into tempo, estimating tempo from tap intervals, and analyzing local WAV audio files for BPM. It is designed for DJs, producers, and developers who need quick tempo math in scripts or terminals. For a full browser-based BPM workflow, visit https://bpm-finder.net/