Loudness (LUFS) normalizer

This free loudness normalizer matches your audio to a LUFS target so it sounds consistent on the platform you publish to. Drop a file, pick a target (for example -14 LUFS for YouTube or -16 for podcasts), and it measures your integrated loudness and true peak, applies the right gain, and gives you a WAV. It runs in your browser, nothing is uploaded.

In your browser

LUFS measures perceived loudness. Streaming platforms target a level, so matching it keeps your audio consistent with everything else.

Drop an audio file

Loudness is measured and matched in your browser, never uploaded.

Choose file

Runs in your browser. Nothing is uploaded. This is a free tool from Vocast.

How it works

Pick a target

Choose the LUFS target for where you will publish, or set a custom value.

Add your file

Drop an audio file. Loudness is measured on your device.

Download

See the before and after loudness, then download the normalized WAV.

Frequently asked

LUFS is a measure of perceived loudness. Streaming platforms target a specific level, so matching it keeps your audio as loud as everything else, without being turned down or up automatically.

-14 LUFS suits YouTube, -16 LUFS suits most podcasts and Apple, and -23 LUFS is the broadcast standard (EBU R128). You can also set a custom target.

No. Measurement and normalization happen in your browser, and your file never leaves your device.

True peak is the highest level the signal reaches, in dBTP. Normalizing keeps it below a safe ceiling so it does not clip on playback.

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