What are LUFS?

LUFS stands for Loudness Units relative to Full Scale, a standard measurement used to determine the perceived loudness of audio. Unlike simple peak level measurements, LUFS is designed to reflect how loud audio actually sounds to human listeners. It takes into account the way people perceive different frequencies and volumes over time.

LUFS measurements are commonly used in music production, broadcasting, and streaming services to ensure consistent loudness levels across different tracks and programs. There are several types of LUFS measurements, including integrated LUFS, which measures the average loudness of an entire track, short-term LUFS, which measures loudness over a few seconds, and momentary LUFS, which measures very brief loudness changes.

Many streaming platforms use LUFS standards to normalize playback volume between songs. For example, music may be adjusted to a target loudness level so that one track does not sound dramatically louder than another. Because of this, LUFS has become an important reference point during mixing and mastering when preparing music for digital distribution.