Free Online Audio Speed Changer
The speed changer uses overlap-add time stretching, so a voice sped up does not turn into a chipmunk and a slowed-down song does not drop in pitch. 100% is the original speed; 200% plays twice as fast in half the time.
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How to use Audio Speed Changer
- Load the audio file.
- Set the speed slider (50%–200%).
- Choose MP3 or WAV output.
- Press Apply and download the retimed clip.
Questions about Audio Speed Changer
Will speeding up audio raise the pitch?
No — that is the point of time stretching. The tempo changes but the pitch stays the same, unlike simply resampling the file.
How extreme can the speed change be?
The slider runs from 50% to 200%. Very large stretches can add a slight warble on complex material; moderate changes sound most natural.
About Audio Speed Changer
Change audio speed without changing pitch with our free online Audio Speed Changer. 100% browser-based, fast, and private—no login or file uploads required.
These audio tools edit sound without a desktop editor: trim and join clips, convert formats, record from microphone, and adjust volume, speed, pitch or equalisation while you listen to the result.
This tool runs in your browser. The file is not uploaded. Work on a copy and preview before downloading: trimming and speed changes are destructive to the loaded clip, and re-encoding a lossy file twice adds audible artefacts.