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Change Audio Volume

Make audio louder or quieter, or even out its loudness.

Change

Positive values make it louder. Every 6 dB doubles or halves the level.

More options

MP3, WAV, M4A, AAC, FLAC, OGG and Opus, many files at once

Drop more files anywhere on this page, or

    Runs on your device. No upload wait.

    What you get

    • Real loudness
    • No distortion

    Questions

    What does normalize do?

    It measures how loud each file sounds (in LUFS, as in ITU-R BS.1770) and changes its volume so every file ends up at the same level. −14 LUFS matches Spotify and YouTube, −16 is common for podcasts, −23 is the European broadcast standard.

    Why did a file not get as loud as the target?

    Raising it further would push its loudest peaks past full scale and distort them. The tool stops just below (−1 dB) and says so. Making it louder still needs a compressor or limiter, which squeezes the peaks; that’s beyond this tool.

    How much is 6 dB?

    +6 dB doubles the signal level, and sounds clearly louder, though not twice as loud: that takes about +10 dB. −6 dB halves it.

    Is the format kept?

    Yes. An MP3 stays an MP3 (at the same or a higher bitrate), a WAV stays a WAV at its bit depth, FLAC stays lossless.

    Are my audio files uploaded anywhere?

    No. Your audio files are opened and processed on your device, and the results are saved straight back to it. Nothing is uploaded. How to check.

    Is it free? Do I need an account?

    It is free to use and there is nothing to sign up for. There are no watermarks and no daily limits.

    Missing something, or not working as it should? Tell us