What is audio normalization?

Normalization adjusts the overall volume so the loudest peak (peak) or average loudness (RMS) reaches a specific target level, ensuring consistent playback volume.

What is the difference between peak and RMS normalization?

Peak normalization scales so the single loudest sample hits the target. RMS normalization scales so the average energy matches the target, often sounding more consistently loud.

Is my audio file uploaded to perform normalization?

No. Normalization is performed entirely in your browser by computing gain from the AudioBuffer samples. Nothing is transmitted to any server.

What target level should I use for podcasts?

For spoken word, −3 dBFS is a safe peak target. Spotify and Apple Podcasts normalise to −16 LUFS during playback.

Volume Normalizer

Normalize audio loudness with peak or RMS normalization so every clip plays at a consistent volume — 100% client-side, no upload required.

100% client-side · no upload

Audio file

Settings Target level (dBFS) Normalization type

Load a file to begin.

How to use

Choose your audio file. Any format your browser can decode is accepted.
Enter the target level in dBFS (−1 for music, −3 for podcasts) and choose Peak or RMS mode.
Click Normalize and download the result.

Related tools

More ways to use this tool

Frequently Asked Questions

What is audio normalization?: Normalization adjusts the overall volume so the loudest peak (peak) or average loudness (RMS) reaches a specific target level, ensuring consistent playback volume.
What is the difference between peak and RMS normalization?: Peak normalization scales so the single loudest sample hits the target. RMS normalization scales so the average energy matches the target, often sounding more consistently loud.
Is my audio file uploaded to perform normalization?: No. Normalization is performed entirely in your browser by computing gain from the AudioBuffer samples. Nothing is transmitted to any server.
What target level should I use for podcasts?: For spoken word, −3 dBFS is a safe peak target. Spotify and Apple Podcasts normalise to −16 LUFS during playback.

Last updated: 2026-05-20 By jarvisbox