Free Change Audio Speed Tool — Speed Up or Slow Down Audio
Speed up or slow down an audio file and save the result. Processed entirely in your browser — no upload, no signup.
Runs in your browser — your files are never uploaded.
Your result will appear here.
How Speed Changes Work
The audio is re-rendered at a different playback rate. Faster playback shortens the file and raises pitch; slower playback lengthens it and lowers pitch — like a record spun faster or slower.
This is handy for speeding up lectures or slowing down music to learn a part. Output is exported as WAV.
Frequently Asked Questions
Yes. Speed and pitch change together.
0.5×, 0.75×, 1×, 1.25×, 1.5× and 2×.
Anything your browser can decode; output is WAV.
No.
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