Audio Volume Booster

Audio files often arrive at incorrect volume levels—podcasts recorded too quietly, background music too loud, or voice recordings that need adjustment. This tool provides instant volume correction by boosting or reducing audio gain in decibels, letting you fix levels without complicated audio software.

Flexible gain control

Adjust volume from -20 dB (significantly quieter) to +20 dB (noticeably louder) using a simple slider. Positive values increase volume for quiet recordings, negative values tame loud audio. The tool shows you the exact decibel adjustment in real-time, and you can preview the audio before committing to the change.

Common adjustments

Quiet podcasts become broadcast-ready with +6 to +12 dB boost, overly loud music can be tamed with -3 to -6 dB reduction, and whispered vocals gain clarity with a +8 dB lift. The flexible range handles nearly any volume correction need without clipping or distortion (though extreme boosts above +15 dB may cause clipping on already-loud audio).

ブラウザ-based processing

No file アップロードs to external servers—all volume adjustment happens instantly in your ブラウザ using the Web Audio API. This means complete privacy and immediate results without waiting for server processing. The tool supports all standard audio フォーマットs including MP3, WAV, OGG, M4A, and AAC.

Preserves audio quality

Volume adjustment is a linear operation that preserves every nuance of the original audio. Unlike 圧縮ion or other effects, simply changing gain doesn't affect tone, adds no artifacts, and maintains perfect audio fidelity at the new level.

Practical applications

Podcasters use it to normalize episode volumes before publishing, DJs adjust track levels for consistent mix output, video editors balance dialogue against background music, musicians equalize volume across recordings, and content creators fix audio recorded at suboptimal levels.

Export as WAV

The adjusted audio exports as high-quality 16-bit WAV フォーマット, maintaining lossless quality for further editing or immediate use.