Boost video volume — free, online
Recorded too quietly? Raise the audio of any video by 1.5x, 2x or 3x without touching the picture. 100 % in your browser — nothing is uploaded.
Drop a video here
or drag & drop here
Size: —
If the result sounds distorted, re-run with a lower setting.
Working…
How to make a video louder
- Upload your videoDrop it above — it never leaves your browser.
- Pick a boost1.5x for a gentle lift, 2x for clearly quiet audio, 3x for maximum.
- Boost and downloadPress the button and get your watermark-free MP4.
Popular uses
Tap a boost level, then upload:
Frequently asked questions
How much louder can I make my video?
Choose 1.5x, 2x or 3x. Start with 1.5x for slightly quiet clips and 2x for clearly too-quiet ones — 3x is there for whisper-level audio.
Will boosting distort the audio?
It can. If the original recording already peaks near maximum, multiplying it will clip and sound harsh. There is no limiter magic here — if 2x sounds distorted, 1.5x is the honest answer.
Will this change my video quality?
No. The video stream is copied exactly as it is — only the audio is re-encoded louder. Picture, resolution and length stay identical.
Does my video leave my device?
Never. Boosting runs entirely on your device using a WebAssembly build of FFmpeg, loaded unmodified from a CDN. Your file is never uploaded to any server.
Is it really free? Any watermark?
Yes — 100% free with no signup and no watermark, and no limit on how many videos you boost (files up to 500 MB are supported).
Which formats can I upload?
MP4, WebM, MOV, MKV and most common video formats work. The louder file always downloads as MP4, which plays everywhere.
Need another video tool?
Scripts that sell, captions without watermarks, silence removed and more — 15 free tools that run entirely in your browser.