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Boost audio volume and enhance sound quality with advanced audio processing and amplification tools.
The Volume Booster amplifies quiet audio so it is easier to hear, letting you push the level well beyond the usual 100% maximum. It is useful for faint voice recordings, lectures, podcasts, or clips that were captured at too low a gain, giving you a simple slider to raise or lower the volume in real time as the audio plays.
It works using the Web Audio API entirely inside your browser. Your file is loaded into an audio element and routed through a MediaElementSource into a GainNode whose gain you control with the slider; the boosted result plays straight to your speakers or headphones. Your audio is never uploaded — it stays on your device from start to finish.
The slider runs from 0% (effectively muted) through 100% (the original, untouched volume) up to 500%. Boosting above 100% can introduce clipping and distortion, especially on audio that is already loud, so raise the gain gradually and lower your device volume before playing to protect your hearing on headphones.
No. The file is processed locally with the Web Audio API in your browser and never leaves your device — there is no upload.
The gain slider goes from 0% up to 500%. 100% is the original volume, values below it attenuate the sound, and values above it amplify it.
Amplifying beyond the original level can push the signal past its maximum, causing clipping and distortion. This is most noticeable on audio that is already loud, so increase the gain gradually.
No. The boost is applied live during playback only. Your original file is left untouched, and no modified copy is created or saved.
Any audio format your browser can play, such as MP3, WAV, and OGG. If a file will not load, try converting it to a widely supported format like MP3.