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Free Tempo Changer Online

Speed up or slow down audio without changing pitch. No install, no sign up. 100% private, processed in your browser.

Online Audio Tempo Changer

Drag & drop your audio file here

or click to browse • MP3, WAV, FLAC, OGG, M4A, WebM, AIFF, MP4 • Max 50MB

How to Change Audio Tempo Online

  1. Upload Your Audio

    Drag and drop or browse to select your audio file. We support MP3, WAV, FLAC, OGG, M4A, WebM, AIFF, and MP4 formats.

  2. Adjust the Speed

    Use the slider to change speed from 0.25x (very slow) to 4x (very fast). The pitch remains unchanged regardless of speed.

  3. Preview the Result

    Click "Play Preview" to hear your audio at the new speed. The playhead shows your current position in the waveform.

  4. Export & Download

    Click "Export & Download" to save your tempo-changed audio as a high-quality WAV file.

Why Use ChangerAudio Tempo Changer?

No Sign Up

No account needed. No email required. Just open and use instantly.

No Install

Works directly in your browser. No software, no plugins, no downloads.

100% Free

No watermarks, no hidden limits. Forever free for personal and commercial use.

Pitch Preserved

Speed changes do not affect pitch. Your audio sounds natural at any tempo.

Frequently Asked Questions

Does changing tempo affect pitch?

No. ChangerAudio Tempo Changer uses time-stretching algorithms that preserve the original pitch. Your audio will sound natural whether sped up or slowed down.

What speed range is supported?

You can change speed from 0.25x (quarter speed) to 4x (quadruple speed) in increments of 0.05x. This covers virtually all practical use cases.

Is my audio uploaded to a server?

No! All audio processing happens locally in your browser using Web Audio API. Your files never leave your device, ensuring 100% privacy.

Do I need to install any software?

No! ChangerAudio Tempo Changer works entirely in your browser. No install, no download, no software required.

Can I use the output commercially?

Yes, all exports are royalty-free. You can use them for personal or commercial projects.