Normalise Loudness
Bring a recording to the loudness a platform expects, in LUFS.
- Add
- Adjust
- Make
- Keep
How to use this tool
- Add your files — drag them onto the page or choose them. They stay on your device.
- Pick the Target: -16 LUFS for streaming platforms, -23 for broadcast, -18 for classic full-level.
- Leave Measure first, then correct on (Advanced) — a slower two-pass run that is measurably accurate instead of a guess.
- Press “Normalise” and download the results, individually or as one ZIP.
About this tool
Bring a recording to the loudness a platform expects, in LUFS. Free and unlimited, and nothing is uploaded: it all runs in your own browser. Everything is analysed and produced on your own device — nothing is uploaded anywhere, and you can verify it: the tools keep working even offline.
Privacy & limitations
Multi-hundred-megabyte recordings can exhaust the browser's memory — everything runs on your machine, so your machine is the limit. Normalisation evens out loudness between files; it does not re-master a track — heavy compression baked into the source stays baked in.
Last updated:
Frequently asked questions
What is LUFS?
A measure of how loud something actually sounds to a listener, rather than how large the peaks are. It is why two tracks with identical peak levels can be obviously different in volume.
Which target should I use?
−14 LUFS for music on Spotify, Apple Music and YouTube. −16 for podcasts. −23 for European broadcast. The platform will adjust you to its own figure anyway, so hitting it yourself keeps control of how.
Is this the same as turning the volume up?
No. A volume control multiplies every sample by the same number, which makes quiet parts louder and clips loud ones. This measures the perceived loudness of the whole recording and moves it, protecting the peaks.
Why does it run twice?
The first pass measures, the second corrects using those measurements. A single pass has to guess, and guesses badly on anything with a quiet opening.