Free Audio Volume Booster
Make quiet audio louder online in seconds. Peak-normalize automatically or apply a fixed gain up to +40 dB.
Got a recording that's too quiet? Our free tool lets you increase MP3 volume, normalize audio, and rescue soft voice memos, podcasts, and songs — all in your browser with no signup and no quality loss.
Drop your audio file here
or click to browse • MP3, WAV, FLAC, OGG, M4A
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How to Make Audio Louder Online
Boost the volume of any quiet audio file in three simple steps — free and right in your browser.
Upload your audio
Drop in a quiet MP3, WAV, OGG or FLAC file you want to make louder.
Pick a boost mode
Choose peak-normalize for safe automatic loudness, or set a fixed gain in dB.
Preview & download
Listen to the louder result, then download your boosted track.
Peak Normalize
One click brings a quiet recording up to full loudness without clipping.
Precise Fixed Gain
Dial in an exact boost up to +40 dB when you know how much louder you need.
Preview First
Hear the boosted track before downloading — no clipping surprises.
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Frequently Asked Questions
How do I make an audio file louder?
Upload your file, choose peak-normalize (safe automatic loudness) or a fixed gain in dB, then preview and download. Our free audio volume booster raises the level without needing any software.
Why is my recording so quiet?
Quiet recordings usually come from a low microphone gain or distance from the source. Peak normalization fixes this by raising the loudest part of the audio to just below clipping, making the whole track noticeably louder.
What is peak normalization?
Peak normalization raises the loudest sample of your audio to just below 0 dBFS, so the whole track is as loud as possible without clipping. It's the safest way to make a quiet recording louder.
When should I use fixed gain instead?
Fixed gain applies the same dB boost to every sample regardless of the current level. Use it when you want a specific loudness increase and you know the source won't clip.
How much can I boost the volume?
Fixed gain goes up to +40 dB. Peak normalization is bounded by the audio's own peak — it can only raise levels up to your chosen headroom.
Will boosting damage audio quality?
Peak normalization is lossless in level terms. Very high fixed gain can introduce clipping if the source is already loud — use the peak-normalize mode when in doubt.
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