Normalize audio
Set the loudness to -14, -16 or -23 LUFS for streaming, podcasts or broadcast, or bring the loudest peak to a level.
Drop an audio file
or drop it here, or paste. Up to 500 MB per file.
Runs in your browser. Your files are not uploaded.
Formats: the format list shows only what this browser can encode. MP3 and FLAC use an encoder that downloads the first time you choose them. M4A (AAC) is not available in every Firefox version.
Memory: audio is decoded in full, about 23 MB per minute of 48 kHz stereo, so long recordings can be slow on phones. Files that would need more than about 1 GB once decoded (about 45 minutes of 48 kHz stereo, or 90 of mono) are refused before decoding.
How to use Normalize audio
Choose an audio file or drop it on the page.
Normalize by Loudness (LUFS) or by Loudest peak.
Pick a target: -14, -16 or -23 LUFS, or a peak level of -0.1, -1, -3 or -6 dB.
Select Apply, read the note about the result, then download.
Questions
No. Everything runs in your browser and the file never leaves your device.
-14 LUFS suits streaming services, -16 LUFS podcasts and spoken word, and -23 LUFS broadcast (EBU R128).
The sample peak is kept below a ceiling to avoid clipping. If that stops the level short, the result note says so. True peak, between samples, is not measured.
Loudness matches how loud the audio sounds overall. Peak only brings the loudest moment to the level you pick.