Free Volume Booster
Boost or reduce audio volume free — no sign-up, no watermark. Adjust gain and download in seconds.
Click to upload or drag and drop
MP3, WAV, FLAC, M4A, AAC, OGG — up to 50MB
-30 to +30dB
Full range gain control, either direction.
Fast
Most adjustments finish in a few seconds.
No sign-up
No account, no email, no watermark.
Choosing a gain amount
+6dB to +10dBis a solid, clearly audible boost without heavy clipping risk on most recordings. Going much higher toward +30dB will often introduce distortion — that's the tradeoff of pushing gain that far, not a flaw in the tool.
On the reduction side, -6dB to -10dBis enough to noticeably quiet a recording that's too loud, while still keeping it clearly audible.
More free tools
Frequently asked questions
What gain range can I use?
From -30dB to +30dB. Extreme values near either end will often sound distorted or overly quiet — that's expected behavior, not a bug.
What's a safe boost amount?
+6dB to +10dB is a solid, clearly audible boost without heavy clipping risk on most source material.
Is this really free?
Yes — completely free, no sign-up, no watermark on the output.
What formats are supported?
MP3, WAV, FLAC, M4A, AAC, OGG, and AIFF, up to 50MB and 20 minutes long.