Volume booster & audio booster
Make quiet audio louder.
Some videos, calls and recordings are just too quiet, even at full volume. SoundBooster amplifies them up to 600%, with a limiter that keeps loud moments from clipping.
This demo boosts a file you choose
Your file is played and amplified here on this page with the Web Audio API — it isn't uploaded. To boost other tabs (YouTube, Spotify Web, calls, streams), use the Chrome extension. A website can't change the volume of other tabs.
Your audio
This tab · No audioDrop a quiet audio file here
WAV, MP3, FLAC, OGG, M4A/AAC, Opus · up to 250 MB
0:000:00
100%
0%100%300%600%
−60−40−200
Adds gentle bass, clarity and width.
Catches peaks so boosted audio doesn't clip.
What the numbers mean
Percentages multiply the signal's amplitude. Perceived loudness grows more slowly: roughly +10 dB sounds about twice as loud.
| Level | What it does | Gain |
|---|---|---|
| 100% | Normal volume — no change | 0 dB |
| 150% | Slightly louder | +3.5 dB |
| 200% | Double the amplitude | +6 dB |
| 300% | Significantly amplified | +9.5 dB |
| 600% | Maximum amplification | +15.6 dB |
Boost safely
- Start low and raise the volume gradually — SoundBooster glides between levels instead of jumping.
- Keep the limiter on. It holds peaks just under full scale so boosted audio doesn't crackle.
- Very quiet sources boost cleanly. Audio that is already loud will distort when pushed far past 100%.
- Above 300% you'll see a warning. Protect your hearing, especially on headphones.
Your operating system's volume still applies. SoundBooster adds gain on top of it, inside the browser.
Boost any tab in Chrome.
Per-tab volume, EQ, presets and shortcuts — in a popup that matches this page.