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Volume Changer and Normalizer

Change gain or normalize audio with a live preview and clipping waveform.

Adjust volume in decibels, normalize to peak, or apply podcast and streaming level presets. Preview with Web Audio; export through ffmpeg.

No audio selected.

You can also drop a file here.

Output
Awaiting output.

Status

What Volume Changer and Normalizer does

Volume Changer and Normalizer adjusts gain in decibels or normalizes a track by peak or approximate loudness presets for podcasts and streaming.

The waveform highlights regions that would clip at the current gain. Preview uses the Web Audio API; export applies an ffmpeg volume filter locally.

How to use it

  1. Choose an audio file. The waveform and stats appear.
  2. Pick Manual gain or a normalize / loudness preset.
  3. Play preview to hear the change. Red bars mean clipping.
  4. Choose MP3 or WAV and Apply and export.

Formats and limits

  • Opens common audio files the browser can decode.
  • Exports MP3 or WAV.

Settings explained

Mode
Manual gain, peak normalize, or RMS-style presets (podcast, streaming, quiet).
Gain
Decibel change when Mode is Manual gain.

Privacy

Processing stays in this tab. Nothing is uploaded.

FAQ

Are the loudness presets true LUFS?

They target approximate RMS levels suitable for speech and music previews, not a full ITU-R BS.1770 meter.

Related tools

All processing runs locally in your browser. This tool is provided as-is without warranty. Keep backups of your original files before processing.

By uploading media, you confirm you own the content or have permission to modify it. Please read the Terms and Conditions.