Simple gain control
Choose a clear multiplier rather than editing an audio timeline.
VoysumPrivate browser tool
Audio Volume Booster
Make a quiet recording louder with 1.5×, 2×, or 3× gain and download a new MP3.
No uploadNo accountFree to use
✓ Runs locally in your browser
↥Choose or drop a fileaudio/*, .mp3, .wav, .m4a, .webm · up to 500 MB
🔒 Your media file is never uploaded to Voysum.
Private by default
Useful conversion without giving up your file.
Local processing
The recording remains on your device.
Standard output
Download the boosted recording as MP3.
Common questions
Audio Volume Booster FAQ
How local browser processing works and what to expect.
Can boosting cause distortion?
Yes. Audio that is already near maximum level can clip when amplified. Start with 1.5×.
Does this improve microphone quality?
It increases level but cannot restore detail missing from the original recording.
Keep working
Related free tools
Free browser tool
Audio Volume Normalizer
Normalize perceived audio loudness locally in your browser.
Open tool →Free browser toolStereo to Mono Converter
Convert stereo audio to a single mono channel locally.
Open tool →Free browser toolChange Audio Sample Rate
Resample audio to 16, 22.05, 44.1, or 48 kHz locally.
Open tool →Turn your audio into a searchable transcript.
Voysum can transcribe the converted recording and create subtitle files.
Transcribe audio