Audio Volume Booster & Reducer
Boost quiet audio or reduce loud audio from -20 dB to +20 dB. 100 % browser-based.
Your audio stays on your device. Processing happens locally in your browser.
Drag & drop an audio file
or click to browse — MP3, WAV, M4A, AAC, OGG, FLAC
+0 dB
-20 dB0 dB+20 dB
Boosting too aggressively will clip — your audio may distort. Try +6 dB first and listen.
Result
What is Audio Volume Booster & Reducer?
Voice notes that sound great on your phone but tinny on someone else's laptop, podcasts that vary in level between guests, lectures recorded too quietly — all common problems. The volume changer applies a constant gain (in decibels) to every sample of your audio file, in your browser. ±20 dB is the practical limit before clipping becomes audible.
How to use Audio Volume Booster & Reducer
- Upload audio — Drop an MP3, WAV, M4A or other audio file.
- Set the gain — +6 dB is "noticeably louder", +10 dB is "much louder". -6 dB roughly halves the volume. Try small steps first.
- Apply and preview — Listen to the result before downloading.
- Download — Save the boosted/reduced version as a WAV.
Frequently Asked Questions
Yes. Going beyond about +12 dB on already-loud audio causes clipping (hard distortion). Start small.
This tool applies a constant gain. For peak/LUFS normalisation, use a desktop DAW.
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