BPM · Pitch
Change tempo and pitch online — tap BPM
Tap an approximate BPM, retarget tempo by BPM or percent, and shift pitch in semitones and cents without uploading. Processing stays on your device.
Waveform preview will appear here after you drop a file.
How do I change tempo or pitch?
- Drop an audio file and wait for the waveform.
- Tap along with the beat, or type the original and target BPM (or use percent mode).
- Set semitones (−12…+12) and cents (−50…+50) if you need a pitch shift.
- Choose MP3 or WAV export settings, tap Apply tempo & pitch, preview, then download.
Tempo uses FFmpeg atempo only (pitch preserved — no asetrate). Pitch is a separate stage: asetrate + aresample + atempo to restore duration, then tempo atempo if needed.