Audio Volume Adjuster Online
Boost quiet voice recordings, lectures, and music tracks up to 200%, or soften loud audio before sharing. Processed locally in your browser.
How do I increase or decrease the volume of an audio file online for free?
To adjust the volume of an audio file, upload your track to BrowserConvert's Volume Adjuster below. Select your target volume level—from 50% (attenuate) up to 200% (amplify quiet speech)—and click Adjust Volume. BrowserConvert uses client-side FFmpeg audio filters to adjust digital gain locally, guaranteeing 100% privacy with zero server uploads.
Select an audio file to adjust volume
Supports MP3, WAV, M4A, FLAC, OGG, OPUS, AAC
How to Adjust Audio Volume Levels
1. Upload Track
Select any quiet or loud audio file from your device.
2. Set Target Gain
Choose your desired percentage (50%, 75%, 125%, 150%, or 200%).
3. Process & Save
Click “Adjust Volume” to process locally and download your normalized audio.
Frequently Asked Questions About Volume Adjustment
Can I make quiet voice notes or meeting recordings louder?
Yes. Many phone recordings and Zoom audio files are captured with low microphone gain. You can boost the volume up to 200% (+6 dB) to make speech clearly audible on phone speakers and laptops.
Does boosting the volume cause distortion or clipping?
BrowserConvert applies internal gain staging with clipping safeguards. For maximum clarity, boost moderately (125% to 150%) so dynamic transients remain clean and unclipped.
Can I soften or attenuate overly loud or piercing audio?
Yes. You can decrease the gain down to 50% or 75% to bring harsh recordings down to comfortable listening levels.