Audio Speed
Audio Speed Changer Online
Slow it down or speed it up with precise control over tempo and pitch. Preview every change in real time, then export. Free and private.
Make a speed change in three steps.
Add your audio
Upload a song or audio file from your device into the browser editor.
Change speed
Move the control below 1.0x to slow down or above 1.0x to speed up.
Preview and export
Listen to the result, combine effects if needed, and export the file.
Recommended setup
Start here, then adjust by ear.
Nudge speed by ear, since small changes keep vocals sounding natural.
Your audio stays in your browser.
Speed changes are previewed and exported locally in your browser. Remix Songs does not upload your audio to process it.
Frequently asked questions
Can I change audio speed online?
Yes. Upload an audio file, adjust the speed slider, preview the result, and export from your browser.
Does changing speed also change pitch?
Yes. Remix Songs changes speed and pitch together, which is useful for slowed and nightcore edits.
Can I slow down or speed up a song?
Yes. Move speed below 1.0x to slow the song down, or above 1.0x for faster, nightcore-style edits.