Audio Speed Changer

Change audio speed and download the result as a WAV file.

Speed1.25x

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v1.2.460

Audio Speed Changer

Change playback speed

Audio speed changes make a recording faster or slower. This can help review lectures, language practice, podcast notes, transcription, or timing adjustments.

Use smaller changes for natural listening. Large speed changes may make voices sound unusual, reduce clarity, or create artifacts depending on the browser processing.

Changing speed is different from trimming. Speed affects the full duration of the selected audio, while trimming removes sections.

Quick note

Preview before saving, especially when speech clarity matters.

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About

Super Fast Tool is a focused collection of browser tools for calculations, conversions, generation, and file utilities.

Files and calculations are processed locally in your browser whenever possible. Learn more on the Privacy Policy page.

Privacy Policy

Most tool inputs and supported file operations are handled in your browser. Contact form submissions are sent through Formspree, and external services may process limited technical information.

Read the full Privacy Policy for cookies, advertising, local storage, and third-party service details.

Send feedback, bug reports, or calculator ideas.