Increase audio volume
Your files are processed on your device. We never upload them.
Audio is read and written with Mediabunny. MP3 files are made with LAME and FLAC files with libFLAC; browsers without their own AAC encoder use FFmpeg's. Apple Lossless files follow Apple's ALAC code.
How to increase audio volume
- 01A ▸Choose an audio file, or drop it on the page.
- 02A ▸Pick Even out loudness and a target, or By an amount and how much.
- 03A ▸Leave "Stop peaks from clipping" on, and pick the format to save.
- 04A ▸Select Change volume, listen to the result, and download it.
Questions
What's the difference between the two choices?
By an amount raises every sound by the same number of decibels (+6 dB is twice the level). Even out loudness measures how loud the whole file sounds and sets it to a standard, so different files end up equally loud.
Which loudness should I choose?
−14 LUFS is what Spotify and YouTube play at. −16 LUFS suits podcasts and Apple Music. −23 LUFS is the European broadcast standard (EBU R128), quieter, for TV and radio.
Are my files uploaded?
No. Your files are processed on your device. We never upload them.
What does "Stop peaks from clipping" do?
When the sound gets louder, its loudest moments can go past the top and crackle. This turns just those moments down smoothly, keeping every peak below −1 dB. Leave it on unless you'll process the file further.
How is loudness measured?
With the ITU-R BS.1770 method that streaming services and broadcasters use. The sound is weighted for how ears hear it, silence and quiet passages are left out, and the rest is averaged. The result shows the loudness before and after.
Can it make a video louder?
Not on this page. Take the sound out of the video first, or use a video editor.