Volume Booster

Make quiet audio louder. Free, no sign-up, files stay on your device.

Choose an audio fileor drag and drop a file here

🔒 100% private — processing happens in your browser. Nothing is uploaded.

How to make audio louder

  1. Open an MP3, WAV, M4A or other audio file.
  2. Choose how much louder (up to 400%) or tick Normalize for the maximum level without distortion.
  3. Download the boosted WAV file.

Fix quiet voice notes, lectures and podcasts. Very high boosts can cause clipping — Normalize finds the safe maximum automatically. Your audio is processed locally.

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