mtools.lol

Audio Normalizer

Set an audio file to a standard loudness for streaming, podcasts or broadcast.

How it works

  1. 1Upload your audio.
  2. 2Pick where it will be published.
  3. 3Download the normalized audio.

Features

  • Measures the loudness first, then adjusts in one precise pass.
  • Targets for streaming, podcasts and broadcast (EBU R128).
  • True-peak ceiling at -1.5 dB to avoid clipping.
  • Keep the format or choose MP3, WAV or M4A.

Frequently asked questions

What is LUFS?

A standard measure of perceived loudness. Platforms turn tracks up or down to their target, so matching it avoids surprises.

Which target should I use?

-14 LUFS for Spotify, YouTube and most streaming. -16 LUFS for podcasts. -23 LUFS for broadcast.

Is there a file size limit?

Files up to 100 MB.