The online audio volume adjuster changes the loudness of MP3, WAV, AAC, M4A, FLAC, OGG and OPUS files locally in your browser, with output format, quality and gain controls.

Features

• Upload or drag common audio files
• Adjust volume from 10% to 300%
• Keep the original format or export MP3, WAV, AAC and M4A
• Choose 128k, 192k or 256k quality options
• View original size, output size, volume ratio and output spec
• Process audio locally in the browser

Use Cases

• Match loudness for voiceovers, narration and podcast clips
• Fix quiet course recordings or meeting audio
• Prepare short-video, web audio and notification sound assets
• Reduce overly loud audio before sharing

Notes

The local audio engine is loaded on first use, and large files may use more memory and time. High gain may cause clipping or distortion, so try 120% to 180% first. WAV is lossless and may produce a much larger file.