Drop your track. Get the loudness range (EBU Tech 3342) and crest factor (peak to average level), measured in your browser. Then see where your master sits against 151 commercial releases.
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Loudness range (LRA). How much the loudness changes across the track, measured in 3-second windows with the EBU Tech 3342 method. A narrow range means the track stays at one level. A wide range means quiet and loud passages sit far apart.
Crest factor. The sample peak minus the average (RMS) level, in dB. Heavily limited masters have low crest factors, because the peaks and the average sit close together. Higher numbers mean more transient punch.
The measurements match ffmpeg on the test tracks we checked: loudness range to 0.1 LU, and peak and RMS to 0.01 dB.
There isn’t one right number. In our sample of 151 commercial releases, the median was 8.4 LU, and classical music ran much wider than most genres. Compare your track with others in the same genre.
No. It means the peaks sit close to the average level. That can be a deliberate choice for loud genres. It becomes a problem only when it also makes the track sound flat or fatiguing.
No. The file is decoded and measured in your browser.