Tool StudioMake MP3s, songs and audio louder or quieter — without clipping or distortion
Drop an audio file here, or click to browse
MP3, WAV, M4A, AAC, OGG, FLAC and more. Make it louder or quieter.
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Contact usAdd your audio file
Drop a song, recording or video on the page, or click to browse.
Choose what to do
Make it louder or quieter with the slider, or choose Even out the loudness.
Pick the format
Save as MP3, WAV, M4A, AAC, OGG or FLAC.
Change the volume and download
Press the button, listen to the result and download it.
A song that plays quietly, a voice memo you can barely hear, or one track that is much louder than the rest of your files - all quick to fix. Add the file, drag the slider to make it louder or quieter, listen, and download the result. The slider works in decibels, from minus 30 to plus 30, and tells you in plain words what the change means: plus 6 dB is about twice the original volume.
When you make audio louder, the loudest peaks are held just below the maximum level, so a boost does not turn into the harsh crackle of clipping. That makes it a safe way to make an MP3 or a song louder without distortion, as long as you raise it in sensible steps and listen to the result.
If the problem is that some parts are quiet and others are loud, choose Even out the loudness instead. It brings the whole recording to a steady level of about minus 16 LUFS, a loudness commonly used for podcasts and streaming, so quiet speech comes up and loud passages come down - useful for interviews, lectures and a set of tracks you want to sound the same.
Save the result as MP3, WAV, M4A, AAC, OGG or FLAC and listen to it on the page before you download. You can also add a video file: its sound track is saved as audio at the new volume.
Everything happens in your browser. Your music and recordings are never uploaded, so it suits private voice memos and interviews.
Add the MP3, move the slider to a positive number of decibels - plus 6 dB is about twice the original volume, and plus 10 dB sounds roughly twice as loud - and press Change volume. Listen to the result on the page and download it. If it is still quiet, raise the setting a little more.
The loudest peaks are held just below the maximum level when you make audio louder, so a boost does not produce the harsh crackle of clipping. Raise the volume in steps of a few decibels and listen to the result - a very large boost on a recording that already has loud peaks can sound squashed.
Clipping happens when a signal is pushed past the loudest level a file can hold, so the tops of the waves are cut off and the sound turns harsh. Making a recording louder is what causes it, which is why the volume booster holds the peaks just below the limit. Audio that was already clipped when it was recorded stays clipped - turning it down is the only way to make it sound less harsh.
Decibels measure a change in level. Plus 6 dB roughly doubles the signal level, minus 6 dB roughly halves it, and 0 dB changes nothing. Most people hear plus 10 dB as about twice as loud. The slider shows the change in plain words as you move it.
It brings the whole recording to a steady, comfortable level of about minus 16 LUFS, a loudness commonly used for podcasts and streaming. Quiet parts come up and loud parts are brought down, so you do not keep reaching for the volume control. Use it when the volume varies within a file or between several files.
Add the episode, choose Even out the loudness and save it. The result is at about minus 16 LUFS, which is the level Apple Podcasts commonly recommends; some platforms, such as Spotify, are reported to prefer a slightly louder minus 14 LUFS, so check the current guidance for where you publish.
For a recording where the speech is faint, try plus 10 to plus 15 dB, or choose Even out the loudness to lift the quiet parts and keep the loud ones under control.
Yes. Move the slider to a negative number of decibels - minus 6 dB is about half the original volume - and press Change volume.
The file is saved again after the change - as MP3, M4A, AAC or OGG at 192 kbps, which keeps good sound quality, or as WAV or FLAC with no compression at all. Choose WAV or FLAC if you want the most faithful copy.
The volume control on a device changes how loud things play right now. This tool changes the audio file itself, so it is louder everywhere you play it and in anything you share. A browser extension or app that boosts playback does not change the file.
Yes. Add the video file and its sound track is saved as an audio file at the new volume.
MP3 plays almost everywhere. WAV and FLAC keep full quality and are best if you will keep editing. M4A, AAC and OGG are efficient compressed formats.
No. The volume change runs inside your browser, on your own device, so your music and recordings are never sent to a server.
Yes - no account, no premium tier and no daily limit.
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