How to speed up or slow down audio (free)
To change audio speed, open Pitch & Tempo, load your track, and move the tempo slider — you can speed it up or slow it down without the chipmunk effect, then download. Free, in your browser, nothing uploaded.
Change the speed in 3 steps
- Open Pitch & Tempo and load your audio. Drag or choose your track — it loads locally in your browser and is never uploaded.
- Set the speed. Drag the Speed slider faster or slower; leave pitch unchanged so voices and music stay natural (no chipmunk effect).
- Preview and download. Play to check it, then save the result as MP3 or WAV — no watermark, no sign-up.
Tempo vs pitch: tempo changes how fast it plays; pitch changes how high or low it sounds. Pitch & Tempo adjusts each independently, so you can slow a song down to learn it without dropping the key.
Frequently asked questions
Is it free?
Yes — completely free, with no sign-up, no watermarks, and no limit on how many files you process.
Are my files uploaded anywhere?
No. The speed change is applied locally in your browser, so your audio never leaves your device.
Will speeding it up make voices sound squeaky?
Not unless you want it to — Pitch & Tempo changes tempo and pitch independently, so you can change speed while keeping the original pitch.
What can I use this for?
Slowing tracks down to learn an instrument, speeding up podcasts or lectures, or matching a song to a video’s pace.