Audio ToolsFree
Audio Volume Booster
Boost the volume of quiet audio files directly in your browser. Uses Web Audio API gain nodes to amplify the audio up to 4x (400%). Preview the boosted audio before downloading. Supports MP3 and WAV. No upload, no signup.
Updated June 2026
- 1Upload your audio file
- 2Set the volume boost
- 3Download the boosted audio
Drop your audio anywhere, click to browse
MP3, WAV, M4A, OGG, FLAC
Ctrl+Vto paste a copied file
How to use Audio Volume Booster
- 1
Upload your audio file
Drag and drop your audio file into the upload area, or click to browse and select it.
- 2
Set the volume boost
Drag the gain slider to increase loudness.
- 3
Download the boosted audio
The louder file downloads automatically to your device.
Frequently asked questions
Everything you need to know about audio volume booster.
Up to 4x (400%) gain. At 2x the volume is doubled; at 4x it is quadrupled. Be careful at very high values as they can cause audio clipping (distortion).
Clipping occurs when the boosted audio exceeds the maximum digital level (0dBFS), causing distortion. Start with a 2x boost, preview the result, and increase gradually only if needed.
Yes. Play the preview in the browser to hear the boosted version before saving it.
MP3 and WAV as input. The output maintains the same format as the input.
Quiet audio is common in recordings made with phone microphones, laptop microphones, or when the input gain was set too low. Boosting 1.5x-2x usually fixes most quiet recordings.
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