Song Speed Changer (Change Tempo Online)
Speed up or slow down any song.
Change the tempo from half speed to double speed, with or without changing the pitch. Free, in your browser.
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How it works
Choose the song
Any MP3, WAV, M4A or video file works.
Set the speed
Use the slider or a preset such as 0.75× or 1.25×.
Keep the pitch on
This changes only the tempo. Turn it off for the classic sped-up or slowed record sound.
Download
Listen, then save as MP3 or WAV.
About the Song Speed Changer (Change Tempo Online)
Completely free: free account, no credits, no limit. It runs in your browser, so your audio stays on your device.
The Song Speed Changer makes any recording faster or slower, from 0.5× to 2×. With “Keep the pitch” on, only the tempo changes, which is what musicians use to learn a fast solo or a dancer uses to rehearse at a slower pace. With it off, the song speeds up and rises in pitch like a sped-up record.
Tempo changes that keep the pitch use WSOLA time-stretching on your device. Nothing is uploaded.
What you can use it for
- ✓Slow down a fast guitar solo or piano part to learn it
- ✓Rehearse choreography at a slower tempo
- ✓Speed up a podcast or lecture recording
- ✓Match the tempo of two songs for a mix
Step-by-step guide: How to Speed Up or Slow Down a Song Without Changing the Pitch
Frequently asked questions
Can I slow down a song without changing the pitch?
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Yes. Leave “Keep the pitch” on. The song gets slower but stays in the same key.
How slow can I go?
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Down to half speed (0.5×) and up to double speed (2×). Changes within about 30% sound most natural.
What do I get?
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An MP3 (192 kbps) or a WAV file, whichever you choose, ready to download straight away.
Is it really free?
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Yes. It is completely free, with a free account: no limit and no watermark. It runs in your browser, so your audio stays on your device.