AudiowaveAudioWave

Upload an audio file. We'll automatically adjust its loudness to a standard level (‑16 LUFS, ‑1 dBTP).

Click or drag & drop an audio file here

How to Normalize Audio – Complete Guide

Learn what audio normalization is and how to fix inconsistent volume across your tracks. Free online tool using EBU R128 standard.

How Does Audio Normalization Work?

Normalization adjusts the gain of an audio file so that its perceived loudness reaches a target level (commonly -16 LUFS). We use the EBU R128 loudnorm filter, which also applies a True Peak limiter (‑1 dBTP) to prevent clipping. The result is consistent volume suitable for podcasts, music streaming, and broadcast.

Step‑by‑Step to Normalize Audio

  1. Upload your audio file (MP3, WAV, FLAC, etc.).
  2. Click 'Normalize Audio' – the tool scans and applies loudness correction.
  3. Wait for the processing to finish (progress shown).
  4. Preview the normalized audio using the MP3 version.
  5. Download the normalized file in the original format.

Frequently Asked Questions

1. What is the difference between peak normalization and loudness normalization?
Peak normalization only brings the highest sample to a target (e.g., 0dB), which does not guarantee perceptual loudness consistency. Loudness normalization (EBU R128) adjusts based on human hearing, producing uniform volume across tracks.
2. Does normalization reduce sound quality?
No, it only changes gain. However, if the file has very low dynamic range, increasing volume may raise noise floor. Our process applies no extra compression unless needed.
3. What target loudness is used?
We use -16 LUFS integrated and -1 dBTP True Peak, which is the standard for streaming platforms like Spotify (‑14 LUFS is also common, but -16 is safer).
4. Can I normalize very long files (e.g., 2 hours)?
Yes, but browser memory may limit file size. For very long files, consider splitting them or using a desktop tool.
5. Is my audio uploaded to a server?
No. All processing is done locally in your browser using FFmpeg.wasm. Your files stay private.

Get Consistent Volume Across All Your Audio

Normalization is essential for podcasts, music albums, and video soundtracks. Our free online tool brings your audio to a broadcast‑ready level quickly and privately. No signup, no watermarks.