How to boost the volume of an audio file
- Drop your file into the upload box — the tool measures and shows its current peak level.
- Pick a preset (+3 Gentle, +6 Standard, +12 Strong, +18 Extreme) or set any gain up to +24 dB on the slider.
- Press Apply effect; the result shows input and output peaks so you can see the change.
- Preview the louder version, then download it as MP3 or WAV.
This volume booster online solves the classic problem of recordings that were captured too quietly: voice memos, lecture recordings, interviews held far from the microphone, or downloads that play noticeably softer than the rest of your library. The gain stage feeds a transparent limiter that is always on, so peaks stop just below 0 dBFS no matter how hard you push — louder, never clipped. Everything happens locally in your browser; nothing is uploaded.
For boosting only the low end rather than the whole signal, use Bass Boost; for reshaping tone band by band, the 10-band Audio EQ is the right tool. If background hiss gets loud along with the voice, run the file through the Noise Remover first.
FAQ
How do I make a quiet audio file louder without distortion?
Load the file, pick a boost preset from +3 to +18 dB or push the slider to +24 dB, and press Apply effect. A limiter sits permanently after the gain stage and holds peaks just under 0 dBFS, so the output gets loud without the harsh crackle of digital clipping.
How much louder can this volume booster make my file?
Up to +24 dB of gain, which is roughly sixteen times the original amplitude. Be aware that the louder you push past the limiter, the more it flattens the difference between quiet and loud moments — fine for speech, audible as pumping on dynamic music.
Can I see how loud my file actually is?
Yes. When you load a file the tool measures and displays its peak level in dBFS, and after boosting it shows the input and output peaks side by side, so you can verify exactly how much headroom was used.
Is the volume booster free, and are my recordings private?
Completely free with no signup or watermark. The gain and limiter run inside your browser via the Web Audio API — recordings are never uploaded — and you download the boosted file as a 320 kbps MP3 or WAV.