Free Online Audio Volume Booster
Boost audio volume up to 300% or auto-normalize to broadcast loudness (EBU R128). 100% browser-based — no upload, no watermark, no signup.
Features
Rescue Quiet Recordings — or Match Broadcast Loudness
Boost from 50% to 300%, or let auto-normalize balance the track to -16 LUFS like Spotify, YouTube, and major podcast platforms.
6 Volume Presets
50%, 100%, 150%, 200%, 250%, 300% — one click each, no manual dB math.
Auto-Normalize (EBU R128)
FFmpeg loudnorm filter targets -16 LUFS with -1.5 dB true peak — broadcast-ready.
Clipping-Safe Boosts
Auto-Normalize mode re-scales peaks so heavy gain doesn't distort the output.
Perfect for Podcasts, Meetings, and Music
Whether you're fixing a quiet interview or mastering a track, pick the right gain in one click.
Podcast Leveling
Even out loudness across episodes so listeners never touch their volume knob.
Voice Recording Fix
Rescue quiet meetings, lectures, or interviews by boosting volume up to 3x.
Music Mastering
Normalize track volume before mixing or sharing — consistent loudness across every file.
100% Private & Free
All DSP runs through FFmpeg WebAssembly in the browser. Audio never leaves your device.
No Server Upload
Files are processed entirely on your device — nothing is uploaded.
Multiple Formats
Input: MP3, WAV, AAC, OGG, FLAC, M4A and more. Output: MP3 or WAV.
Instant A/B Compare
Preview original and boosted output side-by-side before you download.
FAQ'S
Frequently Asked Questions
Ask us anything!
Boost Your Audio Volume Now
Free, private, and instant. Pick a preset or auto-normalize and download in seconds — no signup required.