Audio Normalizer - Adjust Volume Levels Online

Normalize audio volume to consistent levels. Boost quiet audio or reduce loud peaks. Supports MP3, WAV, OGG, FLAC. Browser-based, private.

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Supports MP3, WAV, OGG, FLAC, AAC

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Frequently Asked Questions

Normalization adjusts the overall volume of an audio file to reach a target level. Peak normalization sets the loudest point to a specific level. Loudness normalization (EBU R128) adjusts perceived loudness for consistent playback across different tracks.

Peak normalization adjusts based on the loudest single sample—useful for maximizing volume without clipping. Loudness normalization (EBU R128/LUFS) adjusts based on perceived loudness, which accounts for how humans hear sound. Use loudness normalization for podcasts and music playlists.

For podcasts, -16 LUFS (stereo) or -19 LUFS (mono) is standard. For music streaming (Spotify, Apple Music), -14 LUFS is common. For broadcast, -23 LUFS (EBU R128). For maximum volume without clipping, use peak normalization at -1 dB.

Normalization itself is a simple gain adjustment that doesn't degrade quality. However, the output must be re-encoded for compressed formats (MP3, OGG, AAC), which involves slight quality loss. Use lossless formats (WAV, FLAC) to preserve quality.

Currently, this tool processes one file at a time. For batch normalization with consistent levels across an album or podcast series, process each file with the same target level setting.

Normalization cannot fix existing clipping or distortion—it only adjusts overall volume. If your audio is already distorted, normalization may make it more noticeable. Consider using a limiter or audio repair tools for damaged audio.

Generally normalize as a final step, after all other editing (trimming, effects, mixing). This ensures your target level reflects the final audio. Normalizing too early may require re-normalization after other edits.

This tool supports MP3, WAV, OGG, FLAC, AAC (M4A), and most common audio formats. The output maintains the same format as the input, re-encoded at high quality settings.

Volume boost applies a fixed gain (e.g., +6dB) regardless of current levels. Normalization analyzes the audio and adjusts to reach a specific target. Boost is simpler; normalization is smarter for consistent results.

No. All processing happens entirely in your browser using FFmpeg WebAssembly. Your audio files never leave your device, ensuring complete privacy.

Audio Normalizer - Adjust Volume Levels Online

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Normalization Mode

Normalization Complete

Recommended Targets

When to Normalize

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