Can I boost quiet voice recordings and podcast files?

Yes! You can amplify low-volume audio up to 300% to make quiet speech crisp, clear, and audible.

Will boosting volume distort my audio quality?

Our engine applies linear gain smoothing to preserve dynamic range. We recommend testing live playback before exporting.

Is this Audio Volume Booster free?

Yes! YupVox Volume Booster is 100% free with unlimited file usage and zero software installation.

Are my audio files kept private?

Yes! All audio processing runs 100% locally in your web browser via Web Audio API without uploading files to remote servers.

無料 · No Installation

Audio Volume Booster & Loudness Changer

Boost quiet audio recordings or reduce loud sound levels up to 300% smoothly without distortion — 100% free and in-browser.

Upload audio file or drag & drop here

Supports .mp3, .wav, .m4a, .ogg, .flac formats

Key Features

0% – 300% Gain Range

Fine-tune volume from soft whisper to 300% loud amplification with a simple slider.

Anti-Clipping Protection

Smart gain algorithm amplifies volume while preventing harsh acoustic distortion.

Real-Time Audio Preview

Listen to volume adjustments instantly before exporting your finished track.

How to Use

Upload audio file

Select or drag & drop any MP3, WAV, M4A, OGG, or AAC file.

Adjust volume slider

Drag the gain slider to your preferred volume percentage (e.g. 150%, 200%, 300%).

Download boosted audio

Preview the amplified sound and click Download to save your new audio file.

Online Audio Volume Booster & Loudness Changer — Boost MP3 Volume Free

Have a quiet podcast recording, whispery lecture audio, or low-volume MP3 music track that sounds faint even at maximum device volume? YupVox Free Online Audio Volume Booster lets you boost or attenuate audio levels up to 300% with smooth linear gain and anti-clipping protection — 100% free with instant in-browser playback preview.