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Volume Normalizer

One track whispers, the next one blasts. Normalization brings a whole batch to the same perceived loudness — the same standard streaming services use.

Drop audio files here or click to browse Tap to choose a file
MP3, WAV, FLAC, OGG, M4A · batch · processed locally

The end of the volume rollercoaster

A playlist assembled from different sources is a mess of loudness: a 1980s rip, a modern master and a voice memo can differ by a factor of ten. This tool measures each file by perceived loudness (EBU R128 — the broadcast standard) and adjusts it to your chosen target, taming peaks along the way. Quiet files come up, loud files come down, and the whole batch finally sits at one level.

−14 LUFS is what major streaming platforms normalize to — the right default for music. Podcasts usually sit near −16, and if you want maximum punch for a party mix, −11 is the "hot" setting.

Honest note: the audio is re-encoded in the process (the classic MP3Gain trick of editing loudness fields without re-encoding is a different, format-specific technique). At the bitrates used here the difference is inaudible for everyday listening.

Frequently asked questions

What is LUFS?
Loudness Units relative to Full Scale — a measure of how loud audio actually sounds to humans, not just its peak level. Two files at the same LUFS feel equally loud, which is exactly what you want across a playlist.
Which target should I pick?
−14 LUFS for music (streaming standard), −16 for podcasts and audiobooks, −11 only when you want everything as loud as possible and accept a bit of squeeze.
Does it degrade quality?
Files are re-encoded at healthy bitrates (192 kbps MP3/AAC, lossless stays lossless), and loudness adjustment itself is transparent. For critical archival work, keep the originals too.

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