LUFS / Loudness Meter
Drop in a WAV or MP3 and get a fast loudness report: integrated LUFS, momentary and short-term loudness, loudness range, true-peak estimate, a detailed timeline and streaming-normalization estimates.
Streaming normalization — estimated gain change
Detailed analysis
Quick mastering readout
What are LUFS, and why do they matter?
LUFS (Loudness Units relative to Full Scale) measures how loud audio feels over time, rather than just how high its peaks reach. Integrated LUFS is the overall loudness of your song. More negative numbers are quieter: for example, −16 LUFS is quieter than −9 LUFS.
Streaming platforms use loudness normalisation to make songs play at more consistent levels. Spotify’s Normal setting uses −14 LUFS as a playback reference, but other services and listening settings may behave differently. For example, a −9 LUFS track may be turned down by about 5 dB on Spotify’s Normal setting.
You do not need to mix or master to exactly −14 LUFS. Many professional masters are louder, while others are intentionally quieter to preserve punch, dynamics, space or a particular vibe. A quieter master is not necessarily a worse master, and making a song louder does not always make it sound better.
Use this meter to understand your track and estimate how much it might be turned up or down during playback — not to chase a compulsory LUFS number. Actual changes depend on the platform, listening mode and available peak headroom.
