Audio Speed Changer
Speed up or slow down any audio from 0.25× to 4× — perfect for lessons, podcasts and effects.
- Runs in your browser
- No upload on server
- Free, forever
- Add audio
- Adjust
- Download
This speed change also shifts pitch (faster = higher voice). For pitch‑only changes, use the Pitch Shifter tool.
How this works — and why it's private
Pick a file, drag the speed slider, then save. Useful for slowing down lessons, speeding up podcasts, or making fun voice effects.
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