Audio Speed Changer

Change the playback speed and tempo of your MP3, WAV, M4A, AAC, or OGG audio files entirely in your browser. This tool runs 100% locally client-side using standard Web Audio APIs—meaning your files are processed completely inside your browser, keeping your lectures, audiobooks, and music private, confidential, and secure.

Offline Web Audio Resampling & Tempo Engine

Load Audio File (MP3, WAV, M4A, OGG)

🎵 Drag & Drop audio file here

Supports major formats. Processing is completed 100% locally in-browser.

Source File Information

Filename: - Size: - Duration: -

Tempo Adjustments

Playback Speed (1.00x - Normal)

Speed Presets

Resample Action

Speed Adjusted Preview

Ready: Waiting for audio file...

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