LUFS & Loudness Analyzer
Measure the Integrated LUFS and True Peak of your master. 100% free, private, and secure.
Click to select an audio file
or drag and drop it here
What is LUFS and why does it matter?
LUFS stands for Loudness Units relative to Full Scale. It is the modern industry standard for measuring how loud a song actually feels to human ears. In the past, people just looked at peak volume meters, but a quick snare hit doesn't sound as loud as a sustained, heavy bassline.
If you want your music to sound huge on Spotify or YouTube without being aggressively turned down by their volume normalization algorithms, you have to know your exact LUFS level before you upload.
How to check your master
Drag and drop your final mastered track into the analyzer. It will scan the entire song from start to finish. The most important number it gives you is the Integrated LUFS, which is the average loudness of the entire track.
Most streaming platforms target around -14 LUFS. If your track is sitting at a crushing -6 LUFS, it is going to get turned down significantly, and you might want to ease up on your limiter so your mix retains its punch.
Frequently Asked Questions
What is Short Term LUFS?
Short Term LUFS measures the loudness over a rolling three-second window. It is incredibly useful for checking if the chorus of your song is noticeably louder and more impactful than your verses.
Should I always aim for exactly -14 LUFS?
Not necessarily. Most modern pop and electronic music is mastered slightly louder, around -9 to -11 LUFS. It is okay to get a small penalty. The goal is just to avoid destroying your track's dynamics just to make it louder.
Will Spotify make a quiet song louder?
Yes. If you master a very quiet acoustic song at -18 LUFS, Spotify will actually apply a digital boost to turn it up so it matches the -14 LUFS standard.