Boost your audio volume up to 400% while maintaining quality. Works with audio and video files.
Supports MP3, WAV, M4A, FLAC and OGG audio, plus MP4, MOV and MKV video (up to 2GB)
Anywhere from 25% to 400% of the original loudness, in 25% steps. Quick presets go from 100% to 400%, and settings below 100% make a file quieter instead.
Boosts up to about 200% usually sound clean. Above that, loud passages can clip and distort, so the tool shows a warning. Click “Generate Enhanced Preview” to listen before you download.
Yes. When you select a video, only its sound is boosted. The picture is copied without re-encoding, so video quality stays exactly the same.
Audio files such as MP3, WAV, M4A, AAC, FLAC and OGG, plus MP4, MOV and MKV videos. The boosted file is saved in the same format as the original.
No. The volume boost runs entirely in your browser, so your audio and video files never leave your device.
Yes. It's free to use, with no sign-up and no limit on the number of files.