Volume Booster / Normalizer
PopularNewIncrease or normalize the volume level of an audio file so it plays consistently loud and clear.
Your files are processed entirely in your browser. Nothing is uploaded to any server, and your documents never leave your device.
What is Volume Booster / Normalizer?
A volume booster raises the loudness of an audio file that was recorded too quietly, while a normalizer analyzes the file and adjusts it to a consistent target loudness. This tool offers both: a simple decibel boost when you just need more volume, and EBU R128 loudness normalization - the standard used by streaming platforms - when you want a recording to sit at a professional, consistent level. Everything runs locally with FFmpeg.
Why use Nuo Tools's Volume Booster / Normalizer?
How to use Volume Booster / Normalizer
Drop the quiet audio file into the tool.
Choose Boost and a dB amount, or choose Normalize for automatic leveling.
Click Apply and wait for the progress bar.
Download the louder file.
Frequently asked questions
What is the difference between boosting and normalizing?+
Boost raises everything by a fixed amount you choose (e.g. +6 dB). Normalize measures the file and adjusts it to a standard target loudness (-16 LUFS, the common podcast/streaming level), managing peaks automatically. Use normalize when unsure.
Will boosting distort my audio?+
Boosting too far can clip loud passages. If the file already has loud parts, prefer Normalize, which raises quiet material while keeping peaks under control.
How much louder can I make a file?+
The boost mode goes up to +12 dB - roughly four times perceived loudness. If that still is not enough, the recording is likely near-silent and normalization is the better option.
Is my audio uploaded?+
No. The processing happens in your browser with FFmpeg compiled to WebAssembly. The file never leaves your device.
What format is the output?+
WAV input stays WAV to preserve full quality; everything else is saved as high-quality MP3 (192 kbps).
When to use this tool
- →Fixing a voice memo or interview that was recorded too quietly
- →Bringing a podcast episode up to a consistent, standard loudness
- →Boosting a lecture recording so it is audible in a noisy place
- →Evening out volume before merging clips recorded at different levels
- →Preparing audio for platforms that expect a specific loudness