Volume Booster Online
Increase the volume of any audio file by up to 3x. Adjust the multiplier, preview the result, and download. Free, private, and entirely browser-based. Your files never leave your device.
Drop files here or browse
Supports MP3, WAV, OGG, AAC, M4A, FLAC - up to 500 MB
Tips for boosting volume
Up to 3x louder
Amplify audio volume up to 300% (3x) using FFmpeg's volume filter. 1.5x is ideal for most recordings.
Preserves original format
The output keeps the same format (MP3, WAV, OGG, AAC, FLAC) as the input with re-encoding.
Preview before boosting
Listen to the original audio in your browser before boosting. Adjust the multiplier to find the right level.
Privacy first
All volume boosting happens in your browser using WebAssembly. Your audio files are never uploaded anywhere.
No quality loss at moderate levels
Boosting by 1.5x–2x maintains excellent audio quality. Very high multipliers may introduce clipping distortion.
How to increase audio volume online
Sometimes audio recordings come out quieter than you'd like — whether it's a podcast, music track, voice memo, or video narration. This free volume booster lets you amplify any audio file directly in your browser, up to 3x the original loudness.
The tool uses FFmpeg WebAssembly to apply the volume filter to your audio file. Adjust the multiplier slider between 1.0x (no change) and 3.0x (3x louder) to find the right level for your audio. A 1.5x boost (+3.5 dB) is ideal for most recordings, while 2.0x (+6 dB) works well for noticeably quiet files.
The first boost requires a one-time download of the audio engine (~30 MB), after which subsequent boosts start immediately. All processing happens locally in your browser — your audio files are never uploaded to any server.
Frequently asked questions
How do I boost audio volume?
Upload your audio file, adjust the volume multiplier slider (1.0x to 3.0x), and click Boost Volume. Preview the audio before boosting to find the right level.
Is my audio uploaded to a server?
No. All volume boosting happens locally in your browser using WebAssembly (FFmpeg.wasm). Your files never leave your device.
What audio formats are supported?
The volume booster supports MP3, WAV, OGG, AAC, and FLAC input and output formats. The output is saved in the same format as the original.
Will boosting damage my audio quality?
Boosting by 1.5x–2x maintains excellent quality for most recordings. Very high multipliers (above 2.5x) may cause clipping distortion on already-loud audio. The slider lets you find the sweet spot.
What does the dB increase mean?
Decibels (dB) measure loudness change. A 1.5x multiplier adds about +3.5 dB. A 2x multiplier adds +6 dB. Most recordings sound best with +3 to +6 dB of gain.