Audio Speed Changer
Speed up or slow down audio and download the result as MP3. Runs in your browser.
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Frequently Asked Questions
How do I change audio speed?
Upload an audio file, choose a speed from 0.5x to 2x, process it, and download the result as MP3.
Does it change the pitch?
The speed filter preserves pitch better than simple playback-rate changes, though extreme values can still sound processed.
Which audio formats can I upload?
Common formats like MP3, WAV, M4A, AAC, and OGG work, and the output is always saved as MP3.
Is the audio uploaded?
No. Processing runs locally in your browser using FFmpeg WASM, so your file stays on your device.