Adjust Audio Volume

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Click to upload or drag and drop

Audio files only (Max 10MB)

ℹī¸ How it works:
  • Upload your audio file
  • Choose Manual Gain, Normalize, or Target Peak
  • Download the adjusted audio

Adjust Audio Volume Online for Free

Make your audio louder or quieter the way that suits your file. Boost a quiet recording by a set amount, normalize it to the loudest it can go without clipping, or aim for a specific target peak level. An optional limiter helps keep boosted audio from distorting. No sign-up and no watermarks.

Three Ways to Adjust Volume

  • Manual Gain – raise or lower the volume by a set amount, from −20 dB (quieter) to +20 dB (louder)
  • Normalize – automatically push the volume to the maximum level without clipping — great for quiet recordings
  • Target Peak – set an exact peak level (from −20 to −0.1 dB) for consistent loudness across files

How to Adjust Volume

  1. Click the upload area above or drag and drop your audio file (up to 10 MB).
  2. Pick a mode — Manual Gain, Normalize, or Target Peak — and set the slider. Keep the limiter on to avoid clipping when boosting.
  3. Apply and download your adjusted audio.

Which Mode Should You Use?

  • Just make it louder → Normalize. It works out the largest safe increase for you.
  • A specific amount louder or quieter → Manual Gain. +6 dB is roughly twice as loud; −6 dB is roughly half.
  • Several files that should match → Target Peak, with the same value for each.
  • Audio going into a video → Target Peak. Around −16 dB leaves room for the platform's own processing.
  • Music going under a voice → Manual Gain, somewhere between −10 and −20 dB.

When You Might Need This

  • An old song or MP3 that plays far quieter than everything else in a playlist
  • A voice memo recorded too far from the microphone
  • A lecture or meeting recording you can barely hear on a laptop
  • A set of clips at different levels that need to match before you edit them together
  • Music that needs turning down before it sits under a voiceover
  • A file that is too loud and distorts on your speakers
  • Audio for a presentation that has to carry across a room

Frequently Asked Questions

Upload it and choose Normalize. That raises the file as far as it will go without distorting, and you do not have to pick a number — the tool measures the loudest moment and works out the rest. Whether it is a song, a voice memo or an old MP3 makes no difference. If the result is still not loud enough, read the next answer, because the reason is usually the same.

Normalizing looks only at the loudest moment in the file, not at how loud the recording generally sounds. For example, imagine a quiet interview that also contains one door slam. That door slam may already be close to the maximum level the audio can reach. Because of that one loud sound, normalizing cannot raise the rest of the recording very much, and the person's speech stays as quiet as it was.

There are two ways around this. The first is to even out the difference between the loud and quiet parts before you normalize, using the Compressor in Enhance Audio. That brings the door slam down, which leaves room to lift everything else. The second is simpler: if the loud moment is not part of what you need, cut it out with Trim Audio first, then normalize what is left.

It catches anything that would go over the ceiling after a boost. Without it, raising a file by more than it has room for simply flattens the tops of the loudest waves, which is heard as crackle or harshness — and once that is baked into the file it cannot be undone. The limiter is on by default and only acts when you are increasing the volume, so there is no reason to turn it off unless you specifically want the raw, unlimited result.

Manual Gain changes the volume by a fixed amount you choose (say +6 dB). Normalize is automatic — it raises the audio to the loudest it can be without clipping, so you don't have to guess the right number.

Large boosts can clip. Leave the limiter on (it's on by default) and the tool reins the level back in after a positive boost to keep things clean. Very quiet sources may only boost so far before the noise comes up too.

Volume changes how loud the audio sounds (its amplitude). The bitrate tool changes the encoding quality, which affects file size — not loudness.

You can upload MP3, WAV, OGG, FLAC, AAC, M4A and WMA up to 10 MB. Upload a WMA and you will get a WAV back, since WMA can be read but not written. Need a different format? Use our Convert Audio tool.

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