Make quiet recordings louder by up to 20 dB with a clipping-safe limiter, or normalize tracks to standard loudness targets (streaming −14 LUFS, podcast −16, broadcast −23) using FFmpeg’s EBU R128 loudnorm — processed entirely on your device.
How to use Volume Booster & Normalizer
Drop in an audio file (MP3, WAV, M4A, OGG, FLAC…).
Pick Boost and set the gain in dB (keep the limiter on to avoid distortion), or pick Normalize and choose a loudness target.
Click the action button, compare with the original, and download as MP3 or WAV.
Frequently asked questions
Will boosting the volume distort my audio?
Not with the limiter on — it caps boosted peaks just below full scale, so the track gets louder without the crackling of digital clipping.
What is the difference between Boost and Normalize?
Boost applies a fixed gain you choose. Normalize measures the track’s perceived loudness and adjusts it to a standard target (EBU R128), which is what streaming platforms and podcast hosts expect.
Which loudness target should I pick?
−14 LUFS for music and general streaming (Spotify/YouTube level), −16 LUFS for podcasts and voice, −23 LUFS for broadcast delivery.
Is my audio uploaded anywhere?
No — FFmpeg runs as WebAssembly in your browser, so the file never leaves your device.