Upload the audio
Choose the recording, lesson, music, or effect you want to retime.
Free Audio Speed Changer
Audio Speed Changer
Speed up or slow down audio for practice, review, or creative work. Choose the playback rate, preview the result, and download the changed file.
Use the toolChange audio speed for the result you need
Small changes sound more natural. Preview speech, music, and transients before exporting because large speed shifts can make audio harder to understand.
Use the toolSet the playback speed
Use a value below 1× to slow down or above 1× to speed up.
Choose pitch behaviour
Keep pitch when clarity matters, or turn that option off for a natural speed-and-pitch shift.
Preview the full result
Check speech clarity, musical feel, and any audible stretching before downloading.
Audio speed changes for practice and production
Different source material tolerates different amounts of change.
Study a fast explanation
Slow speech to 0.8× while preserving pitch so words remain easier to follow.
Create a shorter review copy
Speed a long spoken recording to 1.25× or 1.5× when naturalness remains acceptable.
Make a tape-style effect
Turn pitch preservation off and change speed so pitch rises or falls with the timing.
Avoid rushed speech and damaged sound
Large changes sound less natural
Extreme slowing or speeding can introduce choppiness, blur transients, or reduce speech clarity.
Music and speech behave differently
A setting that works for a lecture may not preserve the feel of a full musical mix.
Duration changes inversely
Faster speed shortens the file, while slower speed increases its duration.
Speed Changer FAQ
What speed range is available?+
Choose a playback speed from 0.5× to 2×.
Can I change speed without changing pitch?+
Yes. Leave Preserve pitch enabled when creating the output.
Why does an extreme setting sound unusual?+
Large timing changes require heavier transformation and can make complex audio less natural.
What file type is downloaded?+
The changed audio is exported as a WAV file.