Your audio is decoded, measured and encoded entirely in your browser — nothing is uploaded. Peak normalize raises (or lowers) the whole track so its loudest sample hits the target. Loudness (RMS) matches the average level so clips feel equally loud; clipping protection caps the peak. WAV is lossless; MP3 is re-encoded with LAME. Input: MP3, WAV, OGG, M4A and more.
An audio normalizer that evens out the volume of a sound file right in your browser. Drag and drop or choose an MP3, WAV, OGG, M4A or other file (whatever your browser can decode); the tool measures the peak and average (RMS) level on your device and raises or lowers the overall gain to hit your target. Pick from two modes. Peak normalize sets the loudest sample to the target (e.g. −1 dBFS) — the classic kind of normalization. Loudness (RMS) matches the average level to a target (−14 dB for YouTube / Spotify, or −16 / −18 / −20 / −23 dB) so several clips or voice-overs feel equally loud. Turn on clipping protection and the gain is capped so peaks never exceed the −1 dBFS ceiling. Preview it, then export as WAV (lossless) or MP3 (128–320 kbps) and download. Decoding, measuring and encoding all happen entirely inside your browser — the file is never uploaded, stored or sent to a server. Great for leveling video or podcast audio, matching mismatched clips, and streaming or asset prep. No install, no sign-up, free to use.
How to use
- Drop an audio file (MP3 / WAV / OGG / M4A and more) or use "choose a file" to load it.
- Pick the normalize mode (Peak / Loudness) and target level. In Loudness mode you can also enable clipping protection.
- Hit "Preview" to check the volume, choose the output format (WAV / MP3) and click "Normalize & download" to save.
FAQ
Is my audio uploaded?
No. The file you load is decoded, measured and encoded inside your browser — it is never uploaded, stored or sent to a server. Everything runs locally.
What's the difference between peak and loudness (RMS) normalize?
Peak normalize sets the single loudest sample to your target (e.g. −1 dBFS) — the classic kind of normalization. Loudness (RMS) matches the track's average level to a target instead, which is better when you want several clips or voice-overs to feel equally loud.
Will turning up the volume cause clipping?
In Loudness mode you can enable clipping protection. It moves the average level toward your target while capping the gain so peaks stay under the −1 dBFS ceiling, preventing distortion. In Peak mode, keeping the target below 0 dBFS avoids clipping.
Can I process several files at once?
This tool processes one file at a time. Load, choose the mode and target, and export for each file. Using the same settings in turn lets you match the volume across multiple sources.
Which formats can I load, and what can I export?
Input can be MP3, WAV, OGG, M4A and more — whatever your browser can decode. Output can be WAV (lossless) or MP3 (choose 128–320 kbps).