How It Works
LUFS was developed as part of the EBU R128 and ITU-R BS.1770 standards to provide a perceptually accurate way to measure loudness. Unlike simple peak or RMS metering, LUFS applies a frequency weighting curve (K-weighting) that roughly mirrors human hearing sensitivity — we perceive midrange frequencies as louder than bass or extreme highs at the same measured level. This means a LUFS reading correlates much more closely with how loud something actually sounds to a listener than a raw decibel measurement does.
There are three types of LUFS measurements you will encounter. Momentary LUFS captures loudness over a 400-millisecond window — useful for spotting sudden volume changes. Short-term LUFS uses a 3-second window and is helpful for tracking loudness in real time as a section plays. Integrated LUFS measures the overall loudness of an entire track from start to finish, averaging everything together with a gating algorithm that ignores silence. Integrated LUFS is the number streaming platforms use for normalization.
Every major streaming platform applies loudness normalization — Spotify targets approximately -14 LUFS, Apple Music targets -16 LUFS, YouTube targets -14 LUFS, and Tidal targets -14 LUFS. If your track is louder than the platform target, it gets turned down. If it is quieter, some platforms turn it up (Spotify with "Loud" normalization off). This means the old loudness war strategy of mastering as hot as possible now actively works against you — an over-limited track at -8 LUFS will be turned down by 6 dB on Spotify, and its crushed dynamics will be even more apparent at the reduced playback level.
Why It Matters for Your Mix
LUFS has fundamentally changed how professional engineers approach loudness. In the loudness war era, the only winning strategy was to make your track louder than the competition. Now that streaming platforms normalize everything to a target level, dynamics have become the competitive advantage. A track mastered to -14 LUFS with 8 dB of dynamic range will sound punchier, more exciting, and more "alive" on Spotify than a track mastered to -8 LUFS with 3 dB of dynamic range — because Spotify turns them both to roughly the same perceived loudness, but the dynamic track retains its transient impact. Understanding LUFS also helps you make informed genre decisions. A jazz recording might sit comfortably at -18 LUFS with wide dynamics, while an EDM track might target -10 LUFS for its intended dense, in-your-face energy. Neither is wrong — what matters is that you are making a conscious choice based on how the platforms will handle your music, rather than blindly chasing a number.
Common Mistakes
Mastering to a single LUFS target for all platforms
Different platforms have different normalization targets, and the differences matter. A track mastered to -14 LUFS for Spotify may be turned up slightly on Apple Music (-16 LUFS target), potentially revealing noise or artifacts. Master for the dynamics your music needs and check how the result translates across platforms.
Prioritizing LUFS over dynamic range
Chasing a specific LUFS number often leads to over-compression and over-limiting. A track at -11 LUFS that sounds dynamic and punchy is far better than a track at -14 LUFS that was squashed to hit that exact number. Let the genre and the music dictate the loudness; use LUFS as a reference, not a rigid target.
Measuring LUFS only at the loudest section
Integrated LUFS is a whole-track measurement, and a quiet intro or breakdown significantly affects the number. If you measure only during the chorus, your reading will be misleadingly high. Always check the integrated LUFS of the full bounce, and use short-term LUFS to evaluate individual sections.
What Real Uploads Measure
Measured on 7,301 unique files uploaded to RoastYourMix between February 20, 2026 and November 7, 2026. Each file counts once, with its latest analysis. The numbers update daily.
| Median integrated loudness | -10.4 LUFS |
|---|---|
| Middle half of uploads | -13.4 to -8.7 LUFS |
| Louder than -14 LUFS | 79 % |
| Quieter than -16 LUFS | 13 % |
| True peak above -1 dBTP | 68 % |
What RoastYourMix Measures
RoastYourMix measures the integrated loudness of your whole track in LUFS, using K-weighted metering per the ITU-R BS.1770 standard. It reports the integrated reading and the loudness range, not short-term or momentary values, and shows how much Spotify, Apple Music and YouTube will turn your track down or up.
See LUFS (Loudness Units) in Action
Upload your mix and see its loudness, true peak, tonal balance and stereo width measured.
The quick answers
What LUFS should I target for Spotify?
Spotify normalizes to approximately -14 LUFS integrated. However, do not sacrifice dynamics just to hit -14. If your genre calls for a louder master (-10 to -12 LUFS), Spotify will simply turn it down — which is fine, as long as your track sounds good. The key is to avoid over-limiting to hit a specific number.
What is the difference between LUFS and RMS?
Both measure average loudness, but LUFS applies a K-weighting filter that models human hearing perception, making it a more accurate representation of how loud something actually sounds. RMS is a straight mathematical average of signal amplitude with no frequency weighting. LUFS has become the industry standard for loudness measurement.
Do LUFS targets change between genres?
Technically, the platform normalization targets are the same regardless of genre. But different genres have different typical loudness ranges — classical music might integrate at -20 LUFS, pop at -12 to -14 LUFS, and EDM at -8 to -10 LUFS. These genre norms exist because they serve the music, not because the platforms demand them.