What is Volume Adjuster?

Volume Adjuster lets you increase or decrease the volume of any audio file without re-encoding or uploading it anywhere. Load your MP3, WAV, or OGG file and use the gain slider to amplify quiet recordings or tame overly loud tracks. Everything runs privately on your device.

Drop in an MP3, WAV, OGG, or M4A, move the gain slider between -20 dB and +20 dB, and hear the change live before saving. The Normalize button pushes the loudest peak to -1 dB without clipping, or switch to LUFS mode and pick a standard: -14 for YouTube, -16 for podcasts, or -23 for broadcast TV. Download as lossless WAV or compact MP3. Files never leave your device.

How to use

1. Step 1 — Drop or select an audio file (MP3, WAV, OGG, or other supported format).
2. Step 2 — Move the gain slider to boost or reduce volume. Preview the result in real-time with the play button.
3. Step 3 — Click 'Download' to save the adjusted audio file to your device.

When to use

• Boosting the volume of a podcast or voice memo that recorded too quietly.
• Pulling down a song that distorts during the loudest sections before adding it to a playlist.
• Matching the loudness of several clips before stitching them together in a video editor.

Result

You recorded a podcast episode but the volume is too low. Load the file, slide the gain to +6 dB, preview to confirm it sounds right, then download the louder version.

FAQ

What does the clipping warning mean?

It appears when the peak plus your gain goes above 0 dB. At that point the loudest moments get squared off and you hear a harsh crackle. Either lower the gain or hit Normalize instead.

Should I download WAV or MP3?

Pick WAV when you want lossless quality for editing or archiving — it's larger but keeps every detail. Pick MP3 when you're sharing or uploading and want a smaller file; it re-encodes once through a lossy codec, so save the WAV too if you plan to edit further.

What's the difference between gain and normalize?

Gain changes every sample by the same number of decibels. Normalize measures the loudest peak in the file and applies whatever gain is needed to bring that peak to 0 dB, which is the safest maximum loudness.

Will adjusting volume hurt audio quality?

Reducing volume keeps the file pristine. Boosting also keeps quality clean as long as you stay below the clipping warning, since the math is just multiplying samples. Once you clip, distortion is permanent in the export.

Does the file get uploaded anywhere?

No. Decoding, gain processing, and WAV encoding all happen in the same tab using the Web Audio API. Close the tab and everything is gone.

Related Tools