Audio tool · Free
Audio Volume Booster
Make quiet recordings louder by +3 to +15 dB with a peak limiter, or normalise loudness to -16 LUFS.
- Processed on our server — deleted when processing finishes
- Input: mp3, wav, m4a, aac, ogg, flac → mp3, wav
- Up to 50 MB per file
How to use Audio Volume Booster
- 1
Add an audio file.
- 2
Choose a boost or loudness normalisation.
- 3
Choose MP3 or WAV.
- 4
Click Boost volume and download the result.
About this tool
Quiet voice notes and recordings are hard to hear on phones and laptops. Choose a fixed boost (+3, +6, +10 or +15 dB) — a peak limiter then keeps the loudest moments from clipping — or normalise to -16 LUFS, a common loudness for podcasts and spoken content. Processing runs on our server with FFmpeg.
Good to know
- Boosting also raises background noise — use the Audio Noise Remover first for noisy recordings.
Frequently asked questions
Will boosting cause distortion?
A limiter prevents hard clipping, but large boosts on already loud audio can sound squashed. Start with +6 dB or use normalisation.
What does normalise do?
It measures perceived loudness and adjusts the whole file to about -16 LUFS, so quiet files get louder and very loud files get slightly quieter.
Is Audio Volume Booster private?
Your file is uploaded over an encrypted connection and processed in a private temporary folder on our server. The uploaded file and the result are deleted from the server as soon as processing finishes — whether it succeeds or fails — and the result is sent straight to your browser. If an upload is interrupted part-way, its temporary data is removed automatically within about 30 minutes. We do not keep copies.
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