What does Change Audio Speed do?
Speed up or slow down audio playback while keeping the original pitch.
Change Audio Speed accepts MP3, WAV, OGG, M4A, AAC, FLAC and WEBM files, and produces MP3 and WAV output.
Your MP3, WAV, OGG, M4A, AAC, FLAC and WEBM files are processed locally in your browser — they are never uploaded to our servers.
How to use Change Audio Speed
- 1Drag and drop your file onto the upload area, or click “Choose file”.
- 2Adjust the change audio speed settings to suit your needs.
- 3Click the main action button and wait a moment while it is processed on your device.
- 4Preview the result and download your MP3 and WAV file.
Supported formats
- Input
- MP3WAVOGGM4AAACFLACWEBM
- Output
- MP3WAV
Frequently asked questions
Is Change Audio Speed free?
Yes. Change Audio Speed is completely free with no sign-up and no watermarks.
Are my files uploaded?
Your MP3, WAV, OGG, M4A, AAC, FLAC and WEBM files are processed locally in your browser — they are never uploaded to our servers.
Is there a file size limit?
Free usage supports files up to 200 MB. Because processing happens on your device, very large files depend on your device's available memory.