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Volume Normalizer

Measure a file's real loudness and normalize it to a broadcast or streaming target - with true-peak protection instead of silent clipping. Local processing, nothing uploads.

Drop an audio file here, or click to choose

MP3, WAV, AAC/M4A, OGG - decoded locally, never uploaded

Normalization done honestly

Most "make it louder" sites quietly clip or slap a limiter on your audio. This tool only ever applies clean gain: it measures integrated loudness the way platforms do (ITU-R BS.1770 with gating), computes the exact dB difference to your target, and refuses to push true peaks past −1 dBTP. When peaks are the bottleneck it says so and applies what fits. To inspect a file without changing it, use the audio analyzer; for the theory and platform table, the streaming loudness guide.

Volume Normalizer FAQ

How do I make my audio louder online?

Drop the file here, pick a loudness target, and download. The tool measures the file's integrated LUFS per ITU-R BS.1770, applies exactly the gain needed to hit your target, and exports a WAV. If full gain would push true peaks past -1 dBTP it applies the maximum clean gain instead and tells you - honest normalization, not a clipper.

What loudness should I normalize to?

-14 LUFS matches Spotify and YouTube playback level, -16 matches Apple Music, -18 is a common podcast level, -23 is the EBU broadcast standard. For music going to streaming platforms, normalizing is usually unnecessary (the platforms do it themselves) - this tool shines for podcasts, voiceovers, lecture recordings, and matching levels across a batch of files.

Why did it apply less gain than needed?

Gain moves peaks and loudness together. If your file needs +8 dB to reach the target but its true peak is already -5 dBTP, +8 dB would clip; the tool applies +4 dB (peak to -1 dBTP) and reports the shortfall. Getting the rest requires limiting/compression, which changes the sound - do that deliberately in an editor, not silently in a normalizer.

Is this the same as what Spotify does?

Same measurement, same idea: Spotify turns tracks down (and sometimes up) to about -14 LUFS at playback. The difference: this tool bakes the change into the file itself, which is what you want for podcasts, DJ sets, and anywhere no normalizer runs.

Is my file uploaded?

No - measurement and rendering happen in your browser with the Web Audio API. Nothing leaves your device, and the page works offline once loaded.

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