Pitch Tempo

Pitch Tempo helps musicians, singers and dancers prepare a short practice recording in the browser. Estimate song key and BPM, adjust pitch by up to 12 semitones and tempo from 50–150% independently, preview the opening 20 seconds, then export the complete changed file. Audio is processed on the server; source files must be no longer than 5 minutes and no larger than 100 MB. Free guest access allows 3 uploads per 24 hours, with audio available for 24 hours from upload. Free accounts allow 5 uploads per hour and 7 days of audio availability. The site also includes practical guides and numerical tempo and transposition calculators. Created by Andriy Dziuba.