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Change audio volume online

100% localFiles never leave your device — no upload, no account, no tracking.
About Change Audio Volume

Turn an audio file up or down without re-recording. Set a volume percentage to make an MP3 louder or quieter and ffmpeg.wasm applies the gain in the original format — handy for boosting a quiet voice memo or taming an overpowering track.

The adjustment runs entirely in your browser with no upload and no signup, and it works offline. Your audio stays on your device.

How it works
  1. 01

    Add your audio

    Drop an MP3, WAV, M4A, AAC, OGG, or FLAC file onto the page or pick it from your device.

  2. 02

    Set volume

    Choose a percentage to boost or lower the loudness.

  3. 03

    Apply

    Click Apply to adjust the volume locally with ffmpeg.wasm.

  4. 04

    Download

    Save the adjusted audio in its original format.

Features
boost or lowerset percentagekeeps format
Frequently asked
How does the Change Audio Volume tool work?
Turn an audio file up or down without re-recording. Set a volume percentage to make an MP3 louder or quieter and ffmpeg.wasm applies the gain in the original format — handy for boosting a quiet voice memo or taming an overpowering track.
Are my files uploaded to a server?
No. Everything runs entirely in your browser using local JavaScript and WebAssembly. Your files never leave your device.
Does it cost anything or require an account?
No. The tool is free, needs no sign-up, and runs locally in your browser.
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