Audio Loudness Normaliser
Normalise audio to the -16 LUFS loudness standard used by streaming platforms.
Fill in the form and press “Convert” to see the result here.
How to use it
- 1Choose your file, or drag it onto the upload area.
- 2Adjust the options if you need something other than the defaults.
- 3Press the button. The job is queued and you will see it move through waiting, converting and ready.
- 4Download the result. The server copy is deleted as soon as you do.
About the Audio Loudness Normaliser
Loudness normalisation measures perceived loudness across the whole file and applies one gain adjustment, which is very different from peak normalisation - that only looks at the single loudest sample and leaves quiet material quiet.
The target is -16 LUFS with a true peak ceiling of -1.5 dBTP, which is the range Spotify, Apple Podcasts and YouTube normalise to. Delivering at that level means the platform does nothing further to your audio.
Questions people ask
Why does this tool upload my file when the others do not?
Because the software it needs does not exist in a browser. Most tools here run entirely on your device; the ones that need FFmpeg, LibreOffice or a full PDF engine cannot. Those run on an isolated worker with no network access, and the file is deleted as soon as the result is sent to you.
What happens to the file I upload?
It is stored under a random name that is not guessable, processed by an isolated worker, and deleted as soon as you download the result - and in any case automatically after 60 minutes. Uploads are never indexed, shared or used for anything besides producing your result.
Is it free, and do I need an account?
Yes, it is free, and there is no account, no sign-up and no watermark on the result. The project is funded by optional donations.