Change audio speed
Speed up or slow down audio without the voice sounding high-pitched, or change the song's pitch.
How to useChange the speed.
Available in: 
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Change audio speed: what it is for
The tool speeds up or slows down audio while keeping the voice natural, and also shifts the pitch in semitones, so you can sing or play in your key.
The audio isn't uploaded to any server: everything is processed in your browser, in complete privacy.
How to use
- Upload the audio files.
- Choose the speed and pitch.
- Download the new audio.
When to use it
- Listening to long voice messages faster.
- Practicing music more slowly.
- Changing a song's key to sing.
Frequently asked questions
Does the voice get high-pitched when sped up?
No. The speed changes and the pitch stays the same. If you want to change the pitch (lower or higher), use the pitch option.
Can I listen to long voice messages faster?
Yes. Use 1.5× or 2× and download the sped-up audio.
Is the file uploaded to a server?
No. Everything runs in your browser.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.