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Increase Video or MP3 Volume Online

Video or recording too quiet? Boost the volume up to 400%, lower it, or use normalization for an even, pleasant loudness. The video picture isn't re-encoded.

🔗 Direct link sahlify.uk/en/volume-booster/

How does it work?

Type or paste your data.
The result appears instantly.
Copy or download the result.

Why use Volume Booster?

✓ 100% free, no limits, no watermark
✓ No sign-up, no install
🔒 Files processed locally: full privacy
📱 Works on desktop, tablet and mobile

Frequently asked questions

Will the sound distort?

At 300-400%, already-loud audio can clip. Use normalization instead.

Which formats are accepted?

MP4, MOV, WebM, MP3, M4A, WAV and most common formats.

Can the sound distort?

Yes above 300% on already loud audio; listen to the preview before downloading.

Does it work on videos?

Yes, the picture is kept and only the audio is amplified.

Is this tool really free?

Yes, 100% free, with no sign-up, no watermark and no usage limit.

Are my files safe?

Yes. Processing happens directly in your browser: your files are never uploaded to a server or stored.

When to use it

Boosting the volume helps with a video filmed from a distance, a quiet voice message, a lecture recording, or levelling the sound of several clips before joining them.

Our tips

💡 Start at 150–200%; beyond that the sound may clip.
💡 Normalisation gives an even level without distortion.
💡 A very quiet source will also be noisier once amplified.