Local developer utility

Audio Speed Changer

Speed up or slow down audio with a corresponding pitch change. Your input stays in your browser while you work.

Audio Speed Changer🔒 Processed locally

Choose a local audio file

WAV, MP3, OGG, M4A, FLAC or WebM, depending on your browser.

50 MB per file · Five minutes combined · No uploads

Changing speed also changes pitch.

How to use Audio Speed Changer

Choose a local file above, enter any requested options, then run the action. The generated file appears with its own download control.

Processing runs locally in this browser. No input is uploaded or sent to a conversion service.

Audio runs locally. Input decoding depends on browser codec support. Exports are WAV or MP3, with source tags omitted. Limit: mono/stereo files under 50 MB each and five minutes combined.

Inputs

Choose local files using the file picker.

Related tools

Audio Converter — Convert browser-supported audio to WAV or MP3 locally.
Audio Compressor — Reduce audio size with adjustable MP3 bitrate and channel settings.
Audio Trimmer — Trim an audio clip using start and end times, with a downloadable result.
Audio Merger — Arrange and join audio clips in order locally.