How to make an audio file louder?
Upload your file, select 150%, 200%, or 300%, and click Change Audio Volume. Start with 150% for a moderate increase. If the result is still quiet, try a stronger setting, then download the processed MP3.
Audio Volume Booster Online
Make quiet songs, voice notes, lectures, and recordings easier to hear. Choose a volume level from 50% to 300% and export the adjusted audio as MP3.
Free browser-based processing with secure uploads, automatic file cleanup, and no software installation.
Click or drag files to upload
Maximum 1 file, 50MB per file. Supports audio, video, and Kugou encrypted formats.
Rated 4.8 out of 5 based on 850+ reviews
How to use Audio Volume Booster Online
- 1 Upload the audio or video file whose sound needs adjustment.
- 2 Choose a volume level between 50% and 300%.
- 3 Click Change Audio Volume and download the adjusted MP3.
Why use this online audio tool?
- ✓Boost quiet audio up to 300%
- ✓Reduce audio to 50% when it is too loud
- ✓Works with songs, speech, video soundtracks, and voice notes
- ✓Simple browser workflow with no editing timeline required
Frequently Asked Questions
Can I lower the volume of an MP3?
Yes. Select 50% to make the audio quieter, or 100% to keep its original volume while converting it to MP3.
Why does boosted audio sometimes distort?
Audio that is already close to maximum loudness can clip when boosted strongly. Use a lower setting such as 150% if you hear harshness or distortion.
Can I increase the sound in a video file?
Yes. Upload a supported video and the tool will extract its audio, apply the selected volume change, and export the result as MP3.
Does volume boosting improve recording quality?
It makes the signal louder but cannot restore missing detail or remove background noise. Poor source quality will still be present in the output.