What Is LUFS? (And Why It Decides How Loud Your Song Is)

LUFS is how loudness is actually measured in 2026 — and it is the number that determines whether your song sounds powerful or weak next to commercial releases on Spotify.

LUFS stands for Loudness Units relative to Full Scale. It is a measurement of perceived loudness — how loud music actually sounds to human ears — standardized in ITU-R BS.1770. Unlike old peak meters, LUFS reflects how we hear, which is why every streaming platform now uses it to normalize playback volume.

Integrated, short-term, and momentary LUFS

• Integrated LUFS — the average loudness across the whole song. This is the number that matters most for streaming.
• Short-term LUFS — loudness over a 3-second window, useful for spotting loud sections.
• Momentary LUFS — a 400ms window, for catching instantaneous peaks in level.

LUFS vs true peak

LUFS measures loudness; true peak (dBTP) measures the highest instantaneous level including what happens between digital samples. You manage both: hit your loudness target in LUFS, while keeping true peak under a ceiling (typically −1.0 dBTP) so playback never distorts. More in how loud should my master be.

What LUFS should you target?

For streaming, −14 LUFS integrated is the practical standard, because that is roughly where the major platforms normalize. Going much louder than −14 just means the platform turns you down — and you keep the squashed dynamics you traded for that loudness. Going much quieter means the platform may turn you up, but you leave impact on the table.

Platform reference points

• Spotify — normalizes around −14 LUFS
• Apple Music — around −16 LUFS (Sound Check)
• YouTube Music — around −14 LUFS
• TIDAL — around −14 LUFS

A master at −14 LUFS / −1 dBTP translates cleanly across all of them — one file, everywhere. That is exactly what HALOSOUNDS targets automatically.