Peak normalization increases or reduces the overall gain of an audio file so that the maximum peak amplitude reaches a defined target level — usually -1 dBFS to avoid clipping on playback systems. It is the simplest and most direct normalization method.
Audio Volume Normalizer
Analyze and normalize audio volume with peak, RMS, and LUFS control — no upload.
Normalize any audio volume with technical precision
The Audio Volume Normalizer analyzes the peak amplitude, RMS, and an estimated LUFS of your audio file, then applies the gain needed to reach the defined target level. Everything happens in the browser via the Web Audio API, without sending data to servers.
Three steps to normalize your audio
- Open or drag an audio file (MP3, WAV, OGG, FLAC, AAC, or M4A).
- Review the peak, RMS, and LUFS analysis and adjust the target peak level with the slider.
- Click "Download normalized audio" to save the file with the adjusted volume.
Sources and references for this tool
These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.
- AudioBuffer.getChannelData() — Web APIsMDN Web Docs — Method returning the Float32Array of samples for a channel — foundation for peak and RMS analysis.
- ITU-R BS.1770-4 — Algorithms to Measure Audio Programme LoudnessITU-R — International standard for integrated loudness measurement in LUFS, adopted by streaming platforms.
- EBU R 128 — Loudness Normalisation and Permitted Maximum LevelEBU — European broadcast recommendation for loudness normalization at -23 LUFS.