Normalize Audio
Bring an audio file up to a target peak level so it matches the loudness of everything else in your playlist or feed. Peak normalization, browser-only.
drop audio here
MP3, WAV, M4A, FLAC, OGG, AAC. Drop several for batch.
What this does
We scan every sample in your file to find the loudest peak, then multiply the whole signal by a gain factor so that peak sits at the target dBFS you chose. The relative dynamics stay intact — quiet parts stay proportionally quiet, loud parts stay proportionally loud — but the whole file gets shifted up (or sometimes down) to a known ceiling.
When to use peak normalization
- A recorded interview is too quiet. Normalize to -1 dB to maximize loudness without clipping.
- You're stitching tracks together. Normalize each one to the same target so transitions don't blow out speakers.
- You're uploading to a service that requires headroom. -3 or -6 dB leaves room for the platform's processing.
What this doesn't do
This is peak normalization, not loudness normalization (LUFS). A quiet song with one loud transient will only get raised by the amount that transient allows. For true perceived-loudness matching (Spotify/Apple Music style), you want LUFS normalization — that's a more involved algorithm we don't have a tab for yet.
FAQ
Will normalizing distort my audio?
Not unless your target is above 0 dBFS, which we don't allow. Peak normalize at -1 dB is fully clean.
Why is the change subtle on some files?
If the file already has a peak near your target (say it already hits -1.2 dB), there's only a tiny gain to apply. Normalization shines on quiet recordings.
What's the difference between this and "make audio louder"?
Same thing, often. "Make louder" tools usually peak-normalize.
Does my audio upload?
No. Local processing in your browser tab.