Category: Converters
Audio Speed Changer
Speed up or slow down audio locally
Change audio speed in your browser using Web Audio and export a local WAV file. No upload required.
No audio selected yet
Choose an audio file to start.
The audio file is decoded, processed and exported in your browser. It is never uploaded.
Everything on this page is processed in your browser. Nothing is uploaded.
What this tool does
This tool renders a new audio file at the selected playback rate using browser Web Audio APIs. It is useful for quick review copies, practice tracks and private audio adjustments. The simple local render changes duration and may also change pitch depending on browser behavior.
How to use it
- Choose an audio file.
- Select a speed from 0.5x to 2x.
- Export and download the changed WAV file.
Privacy
This tool runs entirely in your browser. Your input is never uploaded, stored or shared — closing the tab removes it.
Frequently asked questions
- Does the audio leave my device?
- No. Decoding, rendering and export happen in your browser.
- Will pitch stay the same?
- This lightweight local version focuses on speed and duration, not studio-grade pitch preservation.
- Why is the output larger?
- The downloaded file is WAV, which is less compressed than MP3 or AAC.