Free audio speed changer that works in your browser
Create slow practice tracks, speed up lectures, or adjust a clip's timing with one slider. Processing happens with the Web Audio API on your device, so your source audio is never sent to our servers. There is no account, watermark, or software to install.
How to use this audio tool
- 1. Choose
Select your audio file or configure the generator. - 2. Adjust
Preview and change the clearly labeled settings. - 3. Download
Create a standard WAV file that works in popular editors.
Audio quality and privacy
The export preserves the decoded sample rate and uses uncompressed 16-bit PCM WAV audio. Browser-only processing makes this useful for private voice recordings and unreleased music. For best results, start with the highest-quality source available and listen to the preview before downloading.