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Normalize an Audio File's Peak Volume

Processed entirely in your browser. Never uploaded to a server.

Drop an audio file here or click to browse

Processed entirely in your browser. Never uploaded to a server.

This tool boosts or reduces an audio file's volume so its loudest point sits just below clipping, peak normalization, not full loudness matching.

Drop your audio file above. The normalized file downloads automatically once ready.

FAQ

What format is the output?
WAV, regardless of the input format.
Does this even out quiet and loud sections within the recording?
No. This tool raises or lowers the complete signal so its highest peak reaches the target level. It does not compress the difference between quiet and loud passages. A recording with one loud moment and long quiet stretches will still have that same gap after normalizing; only the overall level shifts.
Is this the same as loudness (LUFS) normalization?
No, this is peak normalization, which looks only at the single loudest sample in the file. Loudness normalization measures perceived volume across the whole recording and is a different calculation entirely.
Does this work with MP3 files?
Yes. Drop an MP3, WAV, M4A, or any other format your browser can decode — it's read with the browser's built-in audio decoder, then normalized and downloaded as a WAV regardless of what you uploaded.
What loudness level should I target for YouTube, Spotify, or a podcast?
Those platforms target loudness (LUFS), not peak level, so this peak normalizer can't hit those numbers directly. As a reference: YouTube and Spotify both target roughly −14 LUFS, podcasts typically aim for −16 to −19 LUFS. If you need to match one of those specifically, read what LUFS actually measures.

Wondering why a file can normalize and still sound quiet? Read the guide

Not sure what LUFS means or why platforms turn your track down? Read what LUFS is — this tool normalizes peak level, not LUFS.