Input
Drop an audio file here or click to select.
Ad placeholder
Change audio speed
Change audio speed and download the result. Everything runs locally in your browser.
Change speed from 0.5× to 2.0× and download the result.
Runs on your device — no uploads.
Actions
Ready.
0%
Uses FFmpeg atempo (pitch preserved). Exports as WAV.
Output
Your output will appear here.
About this Audio Speed Changer tool
This free online speed changer helps you speed up or slow down an audio file. It’s perfect for podcasts, lectures, and voice notes when you want to listen faster or make speech easier to follow.
How to use it: select a file, choose a speed (for example 1.25× or 0.8×), then click Process. When it finishes, download the adjusted audio.
For privacy, processing runs on your device. Your audio isn’t uploaded, there’s no signup, and the output is generated locally in your browser.
FAQ
Will pitch change when I change speed?
The tool preserves pitch as much as possible, so voices don’t sound like chipmunks when speeding up.
Why does it export as WAV?
WAV is widely compatible. If you need MP3 or M4A, change speed first, then convert the WAV using the audio converter.
What’s a good speed for speech?
Many people find 1.15×–1.5× comfortable for podcasts and lectures. For slowing down, try 0.85×–0.95×.
More audio tools
Ad placeholder