Preset speeds
Choose from 0.5× to 2× with one click.
Free Online Audio Speed Changer
Speed up or slow down audio without changing pitch. Choose 0.5× to 2× and export MP3, M4A, or WAV—locally in your browser.
Drag & drop audio files
MP3, WAV, M4A · Up to 200 MB each
Processed locally in your browser — files never leave your device. Need more features offline? Try the Windows Audio Cutter.
Why Use This Free Audio Speed Changer?
Adjust tempo for podcasts, lectures, or music practice—pitch stays natural.
Pitch preserved
Uses FFmpeg atempo so audio does not sound chipmunk-like or sluggish.
Local only
Your files never leave your browser.
How to Change Audio Speed Online in 3 Steps
Adjust tempo for podcasts, lectures, or music practice—pitch stays natural.
1
Add audio files
Drag and drop MP3, WAV, or M4A files, or click Choose Files. Each file can be up to 200 MB.
2
Choose speed and format
Select a speed preset (0.5× to 2×) and pick MP3, M4A, WAV, or OGG as the output format.
3
Change speed and download
Click Change Speed. Download each processed file when conversion completes.
Audio Speed Changer FAQ
Does changing speed affect pitch?
No. The tool uses atempo filters to keep pitch natural while changing duration.
Can I process multiple files?
Yes. Add several files and export each at the selected speed.
What speed options are available?
0.5×, 0.75×, 1.25×, 1.5×, and 2×.
Need Pro Audio Tools on Windows?
Videoradius Audio Cutter supports MP3, WAV, M4A, merge, fade, and 100% offline processing.