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Audio Volume Booster

Raise or lower the loudness of an audio file with a gain slider or a normalise-to-peak pass, and save the result as a WAV.

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Drop an audio file here or click to browse

MP3, WAV, OGG, M4A/AAC, Opus, FLAC or WebM audio. Your browser decodes it locally; nothing is uploaded.

Gain is plain multiplication: every sample is scaled and then hard-clipped to the -1 to +1 range a 16-bit file can hold. Pushing a quiet recording up is safe, but a file that already touches full scale will clip, and the number of clipped samples is reported honestly below the result so you can hear the difference for yourself. The output is an uncompressed 16-bit PCM WAV.

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What Is Audio Volume Booster?

The Audio Volume Booster decodes a file, multiplies every sample by a gain factor you choose and writes the result back as a 16-bit WAV. Peaks are clamped deliberately and the number of clipped samples is reported, so you can see exactly how close to the ceiling you pushed the recording rather than discovering the distortion later. Normalize to peak does the opposite job: it measures the loudest sample in the file and solves for the gain that brings it to just under full scale.

Who Uses the Audio Volume Booster?

Interview and lecture recordings, phone voice notes and quiet video soundtracks get lifted to a level that is actually audible on a laptop speaker.

How to Use the Audio Volume Booster

  1. Choose or drop the audio file and let the readout report its length and channel count.
  2. Drag the gain slider, or tick Normalize to peak and let the tool calculate the factor.
  3. Boost, review the clipped sample count, then download the WAV.

Why Choose Our Audio Volume Booster?

  • Honest clipping report so you know when the ceiling was hit
  • Normalize to peak solves the exact gain for you
  • Works on any format the browser can decode, with portable WAV output

Try the Audio Volume Booster above — it is free, fast, and works on any device. Bookmark this page to return whenever you need it.