Change Audio Speed

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Change audio speed online — speed up or slow down any MP3 or track without distortion. Free, fast tempo changer.

Drag & drop an audio file here, or click to browse

Accepted: MP3, WAV, M4A, OGG, WEBM, MPGA, MP4. Up to 4 MB.
1.5× — faster
Live preview
1× Original
1.5× New speed
Duration 0:00 0:00
Upload a file to hear the new speed before you apply it.
The preview keeps the pitch natural — exactly like the final MP3.
Changing the speed…
Your re-timed audio is ready
Download
How it works
1
Upload an audio file — MP3, WAV, M4A or OGG.
2
Pick a speed and hear an accurate live preview right in your browser.
3
Apply it — you get an MP3 at the new speed with the pitch kept natural.
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About Change Audio Speed

Change Audio Speed speeds up or slows down a recording without turning voices into chipmunks. Choose a factor from 0.5× half speed up to 3× triple speed and the tempo changes while the pitch stays natural — the processing uses time-stretching rather than simple resampling.

A live preview in the browser plays the file at the new speed, pitch-corrected exactly like the final render, and the page shows the resulting duration before you commit. Slow a fast talker down for transcription practice, speed through a lecture or voice memo, or rehearse music at reduced tempo.

The tool is free. Upload MP3, WAV, M4A, or OGG, pick a speed, and the re-timed MP3 downloads automatically.

How to use Change Audio Speed

  1. Upload an audio file — MP3, WAV, M4A, or OGG.
  2. Pick a speed factor between 0.5× and 3×.
  3. Toggle the live preview to hear the new speed with natural pitch.
  4. Check the new duration, then click Change speed.
  5. Download the re-timed MP3.

Frequently asked questions

No. The audio is time-stretched, so a slowed or accelerated file keeps its natural pitch — voices still sound like the same person, just faster or slower. This is different from tape-style speed changes, which shift pitch too.

Presets run from 0.5× (half speed) through 0.75×, 1.25×, 1.5×, and 2× up to 3× (triple speed). A 60-minute lecture at 2× becomes a 30-minute listen.

Yes — the in-browser preview keeps the pitch natural exactly like the final render, so what you hear before applying is what the downloaded MP3 will sound like.

Speeding up podcasts, lectures, and voice memos to save listening time; slowing down dictation or fast speech for transcription; and practicing music or language shadowing at a comfortable tempo.

Yes, it is free with no account needed. The result is always delivered as an MP3.
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