Audio Volume Adjuster

You can adjust volume from -30 dB to +30 dB. The +30 dB setting can increase volume up to 400% of the original level. However, extreme increases (+20 dB or higher) may cause distortion if the original audio already has loud sections. For best results, start with moderate adjustments like +5 to +10 dB.

Audio normalization is the process of adjusting the overall volume level of an audio file to reach a target level. While this tool doesn't automatically normalize, you can manually adjust the volume to bring quiet recordings up to a desired loudness level. The decibel scale helps you make precise adjustments to achieve consistent volume across multiple audio files.

While the tool allows volume increases up to +30 dB, it processes the audio mathematically by multiplying the sample values. If you boost too much and the audio peaks exceed the maximum level, clipping (distortion) can occur. To prevent this, the tool provides a tip that +6 dB doubles perceived loudness, helping you make informed decisions. Start with smaller increments and test the output.

The tool uses the decibel (dB) scale rather than percentages, which is the professional standard for audio. As a reference: +6 dB approximately doubles perceived loudness (200%), +12 dB is roughly 400%, while -6 dB halves loudness (50%). The dB scale provides more precise and consistent control over audio levels.

The volume adjuster supports all major audio formats including MP3, WAV, AAC, FLAC, OGG, M4A, and more. The processed file maintains the same format as your original upload, preserving compatibility with your devices and software.

Increasing volume itself doesn't reduce quality - the tool mathematically adjusts the amplitude of the audio signal without re-encoding or compressing. However, if you boost too much (+20 dB or more), you may introduce clipping distortion where loud parts exceed the maximum level. This creates audible artifacts. For quality preservation, use moderate increases and avoid pushing the limits.

Currently, the tool processes and downloads the adjusted audio directly. To preview the results, download the file and play it using your device's media player. If the volume isn't right, you can re-upload and adjust again. The processing is fast, making it easy to iterate until you get the perfect volume level.

Absolutely! All volume adjustment happens locally in your browser using client-side processing. Your audio files are never uploaded to any server or transmitted over the internet. The files remain on your device throughout the entire process, ensuring complete privacy and security for your recordings.