Audio Speed Changer
Change audio speed from 0.25× to 4× and download a 192 kbps MP3. Keep the original pitch for speech practice or change it with the speed.
Local file processing where supportedNo conversion upload queue for local filesFree, no sign-up
or import from
- Keep original pitch uses time-stretching (atempo); unchecking it shifts pitch with the speed.
- Range 0.25× to 4×. Output is MP3 at 192 kbps.
Slow down speech without lowering the pitch
Choose an audio file, select 0.75× and leave Keep original pitch on. A two-minute recording will run about 2 minutes 40 seconds. Click Change speed to create a 192 kbps MP3, then listen to the export before starting your transcription.
Choose a speed for the job
Try 1.25× for a lecture or 0.5× to practice a difficult music phrase. Very slow or fast settings can make timing artifacts audible. Use the audio trimmer to isolate the phrase first or loop the clip if you want it to repeat.
Frequently Asked Questions
What happens if I turn off Keep original pitch?
The tool changes the pitch along with the speed. Faster playback generally sounds higher and slower playback lower.Can I save WAV directly?
This tool exports MP3. For a workflow that requires WAV, use the audio converter to change the resulting file’s format.