Audio Speed Changer
Speed Up or Slow Down Audio Online
Speed up or slow down any audio file from 0.5× to 2×. Preview at the chosen speed, then download in your preferred format.
What you control
- Speed range0.5× to 2×
- PreviewLive at speed
- OutputSame / MP3 / WAV
- Uploads to serversNone
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Different jobs, same file here's what people use alongside this tool.
How to change audio speed
- 01Add your audioDrop in an MP3, WAV or OGG file from your device.
- 02Pick a speedSlide between 0.5× and 2× and preview the result.
- 03Download the fileApply the speed change and grab your new clip.
Features
Speed up or slow down
Move from half speed to double speed with a single slider.
Live preview
Hear the audio at the chosen speed before you commit.
Tape-style speed change
Slows down like a record or speeds up like fast-forward.
Your format
Output as the same format, MP3, or WAV.
Private by design
Processing happens inside your browser - nothing is uploaded.
No installs
Works on any device with a browser, no software to download.
Built for speed adjustments
Why change audio speed in the browser
Learn at your pace
Slow down a lecture or interview to catch every word.
Save time
Speed up a long recording to skim through it faster.
Stays private
Recordings are processed inside your own browser sandbox.
Free and unlimited
No accounts, no quotas, and no watermarks.
What changing speed actually does to audio
Changing speed stretches or compresses time. Slow a track down and words get longer and deeper; speed it up and everything gets faster and higher, like a record spinning at the wrong rate.
This tape-style change affects both speed and pitch, which is exactly what you want for study audio, quick reviews, and creative effects. The browser does it by playing the samples at a different rate.
The most useful range is modest. A 0.75× slowdown keeps speech intelligible while giving you time to process, and a 1.5× speedup cuts a recording's length without turning it into a chipmunk.
“I slow native speakers down to 0.75× to catch every word while I'm learning.”
Sana Qureshi - Language learner
“Skimming hour-long interviews at 1.5× saves me an afternoon a week.”
Marcus Reid - Researcher
“Slowing a tricky riff to half speed helps me hear the notes I was missing.”
Elena Petrova - Musician
Frequently asked questions
How does this audio speed changer work?
It plays the samples at a different rate to speed up or slow down the audio between 0.5× and 2×.
Does changing speed change the pitch?
Yes, this tape-style change alters both speed and pitch, like a record spinning faster or slower.
Which formats can I change?
MP3, WAV and OGG inputs are supported, and output can be the same format, MP3, or WAV.
Are my files uploaded anywhere?
No. Processing runs entirely in your browser, so your audio never leaves your device.
Can I preview before downloading?
Yes. The play button previews the audio at the chosen speed before you apply it.
Is there a file size limit?
Files up to 100 MB are supported, which covers most recordings and songs.