Volume Booster
Increase the volume of any audio file up to 500% — right in your browser. No upload, no server.
How it works
Upload your audio file
Drag and drop any MP3, WAV, FLAC, M4A, AAC, OGG, or OPUS file. No account needed.
Set the volume level
Drag the slider from 100% to 500%. Watch the hint to avoid clipping. Use Play to preview the result.
Boost and download
Click Boost Volume — FFmpeg applies the gain in your browser. Download the louder file in seconds.
Frequently asked questions
How much can I boost the volume?
You can boost from 100% (original) up to 500% (5× louder). We recommend staying under 200% to avoid distortion.
What does 'Warning: may clip' mean?
Clipping happens when the boosted signal exceeds the maximum level, causing distortion. It's most noticeable on already-loud tracks. Try a lower boost if you hear crackling.
Does boosting change the file format?
No. The output keeps the same format as the input — boost an MP3, get an MP3 back.
Can I preview the volume before processing?
Yes. Click Play to hear the audio at the selected volume level in real time using your browser's audio engine.
Is my file uploaded to a server?
No. Everything is processed locally using FFmpeg.wasm. Your audio never leaves your device.