Free Audio Speed & Tempo Changer
Speed up or slow down audio songs or podcast clips with pitch preservation or vinyl tape effect.
- 100% free
- Files stay on your device
- No sign-up, no watermark
Choose files or drag & drop
Upload MP3, WAV, OGG, M4A, WEBM, FLAC, AAC files to convert locally inside your browser.
What is Audio Speed & Tempo Changer?
Speed up long lecture recordings to study faster or slow down difficult musical passages to learn instruments. Adjust playback tempo smoothly with optional pitch lock to prevent the chipmunk effect.
How to use Audio Speed & Tempo Changer
- 1
Add your file or input
Choose a supported file, drag it onto the upload area, or type/paste the data this tool works with.
- 2
Adjust the options
Pick the output format, quality, size or other settings the tool offers. Defaults work well for most files.
- 3
Process and download
Run the tool and save the result. Processing happens in your browser, so nothing is uploaded to a server.
Frequently asked questions
What is the difference between tempo change and pitch shift?
Changing tempo alters playback speed while preserving the original musical key and voice pitch. Pitch shift changes the acoustic key without altering duration.
What playback speed range is available?
You can adjust speeds continuously from 0.25x (ultra-slow motion) up to 3.0x (high-speed briefing).
Does changing speed work on both MP3 and WAV files?
Yes, all standard browser-supported audio formats can be re-timed and exported directly to your device.
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