Free Online Volume Booster
This tool multiplies every sample by the gain you set, so 100% keeps the original loudness, 200% doubles it and 50% halves it. Boosting far past 100% can clip loud peaks, so preview before you export.
Loading tool…
How to use Volume Booster
- Load the audio file.
- Drag the volume slider to the level you want.
- Choose MP3 or WAV output.
- Press Apply, listen, then download.
Questions about Volume Booster
Why does the audio distort when I boost it a lot?
Samples above full scale are clipped. If the original is already loud, a large boost pushes peaks past the limit; try a smaller gain first.
Can I make a file quieter instead?
Yes — set the slider below 100%. 50% is half the amplitude, a clearly noticeable drop in loudness.
About Volume Booster
Raise or lower the volume of an audio file with our free online Volume Booster. 100% browser-based, fast, and private—no login or file uploads required.
These audio tools edit sound without a desktop editor: trim and join clips, convert formats, record from microphone, and adjust volume, speed, pitch or equalisation while you listen to the result.
This tool runs in your browser. The file is not uploaded. Work on a copy and preview before downloading: trimming and speed changes are destructive to the loaded clip, and re-encoding a lossy file twice adds audible artefacts.