Change audio volume online
Make an audio file louder or quieter, right in your browser, without uploading anything. Pick an MP3, WAV, OGG, M4A or FLAC file — or a video file, whose audio track is adjusted and whose picture is dropped — choose a volume change from −20 dB to +20 dB, and save the result in the format you choose. The tool is built for short clips: adjusting happens on your device, so a long recording can take a while.
Volume Audio
Drop your audio or video files here
or
MP3, WAV, OGG, M4A or FLAC audio, or MP4, MOV, WebM or MKV video (only the first audio track is adjusted) · Up to 200 MB each · Up to 60 minutes · Best for short clips
0 bytes uploaded — processed entirely on your device.
Changing audio volume, simply explained
The tool reads the file on your device and re-encodes its sound louder or quieter by the amount you pick — always a fresh encode, never a copy of the old sound into a new container, so the adjusted file plays cleanly in any player. The control is plain gain: every part of the sound is scaled by the same amount, from −20 dB (a tenth of the amplitude, 10%) to +20 dB (ten times the amplitude, 1000%), with 0 dB leaving it unchanged. There is no limiter and no loudness normalisation, so a loud recording pushed up may distort where its loudest parts clip — if the result crackles, run it again with a smaller increase. Only the first audio track is kept: a video file adjusts from its audio track alone, its picture dropped, and a file with no audio track is refused. MP3 plays almost everywhere and its bitrate is yours to pick; WAV is uncompressed and larger; OGG carries Opus sound and accepts mono sound only; M4A carries AAC sound; FLAC is lossless and compressed, so it keeps every detail without the size of a WAV. Everything runs on your device, which keeps your files private but means speed depends on your device — short clips finish quickly, while long recordings can take a very long time, so this tool is best for short clips.
Private by design.
Your file is processed in your browser and is not uploaded to a server or saved in browser storage. Cloudflare Web Analytics measures page views and performance; it does not receive PDF contents or filenames. Local processing does not guarantee a PDF is safe to open; only open files from sources you trust.