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Audio Volume Booster

Boost, amplify, and normalize audio volume up to 500% directly in your browser using WebAssembly. Protect against clipping with zero server uploads.

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How to use this tool

  1. Drop or select an audio file (MP3, WAV, AAC, OGG, FLAC, or M4A).

  2. Listen to the original playback to check current sound levels.

  3. Adjust the Volume Gain Multiplier slider or choose a quick preset (e.g. 150%, 200%, or 300%).

  4. Keep Prevent Acoustic Clipping checked to avoid harsh digital distortion.

  5. Select your desired output format and bitrate.

  6. Click Amplify Audio Volume to process the track locally via WebAssembly.

  7. Listen to the amplified sound in the preview player and download your boosted file.

Frequently asked questions

Quick answers about file privacy, processing modes, formats, and device support.

The tool applies FFmpeg's precision volume filter directly within your browser's WebAssembly environment. It multiplies the amplitude of the audio waveform across all frequency channels, raising the perceived loudness of quiet recordings.
When an audio waveform is amplified beyond 100% (0 dBFS), loud peaks can exceed digital thresholds, causing harsh distortion and speaker crackle. When enabled, a gentle limiter automatically smooths peak transients, delivering louder sound without painful clipping.
You can amplify MP3, WAV, AAC, M4A, OGG, and FLAC audio files. You can also transcode to a different format during the amplification process.
When exporting to lossless formats like WAV or FLAC, 100% of the acoustic detail is preserved. For lossy formats like MP3 and AAC, high bitrates (up to 320 kbps) ensure crystal clear playback.
Never. All signal processing and WebAssembly transcoding take place 100% locally on your computer. Your audio recordings remain private and never leave your browser sandbox.

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