Boost audio volume or normalize loudness for MP3, WAV, FLAC, and AAC files. Adjust from -20 to +20 dB or use automatic loudness normalization. 100% free, no signup, all processing happens in your browser.
Audio Volume Booster
Load the audio engine to start boosting and normalizing audio files in your browser.
Boost volume of MP3, WAV, FLAC, AAC, and OGG audio files
Adjust volume from -20 dB to +20 dB with precise slider control
Normalize audio loudness with the industry-standard loudnorm filter
Batch process multiple audio files at once
Choose output format: MP3, WAV, FLAC, AAC, or OGG
Drag and drop file upload for quick processing
Download individual or all processed files
See original and processed file sizes for each file
100% client-side processing with FFmpeg WebAssembly
No file upload to any server -- complete privacy guaranteed
Boost volume of recordings that came out too quiet. Increase the dB level to make voices and sounds clearly audible.
Normalize podcast episodes to consistent loudness levels using the loudnorm filter, ensuring a uniform listening experience.
Increase the volume of music tracks that are too soft for playback. Boost entire playlists in batch mode.
Amplify voice memos and dictations recorded in noisy environments or at low microphone levels.
Boost audio for presentations and lectures so audiences can hear clearly, even in large rooms or through small speakers.
Extract and boost audio from video recordings. Increase volume of interview footage, webinar recordings, and screen captures.
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The fastest, most private way to boost audio volume online. Your files never leave your device.
Adjust volume from -20 dB to +20 dB with a simple slider. Fine-tune exactly how much louder or quieter you want your audio.
Audio files never leave your device. All processing happens locally in your browser using WebAssembly.
Boost volume of multiple audio files at once. No limits on the number of files you can process.
Use the loudnorm filter to automatically normalize audio to consistent loudness levels, following broadcast standards.
Once the audio engine loads, boost volume without an internet connection.
Export boosted audio in MP3, WAV, FLAC, AAC, or OGG format to suit your needs.
More free audio tools
Audio recordings often come out quieter than expected due to low microphone sensitivity, recording distance, or ambient noise. Our free audio volume booster lets you increase the dB level of any audio file to make it clearly audible, whether it is a voice memo, podcast, or music track.
A volume boost applies a uniform gain increase across the entire audio file. Normalization, on the other hand, analyzes the perceived loudness and adjusts it intelligently so quiet sections become louder while loud sections are kept in check, resulting in a consistent listening experience without clipping.
Unlike cloud-based audio tools that upload your files to remote servers, our tool processes everything locally in your browser using FFmpeg compiled to WebAssembly. Your audio files never leave your device, ensuring complete privacy for sensitive recordings, voice notes, and personal audio.
For quiet recordings, start with a moderate boost of +3 to +6 dB and listen to the result before increasing further. For podcast episodes or mixed audio with varying loudness, use the normalize option for the most professional result. Avoid boosting above +15 dB on already-moderate audio to prevent distortion.