free tool

loudness checker

drop a track or master here

or click to browse · measures integrated LUFS, true peak and loudness range

nothing gets uploaded, files stay on your device

how loud should your master be

Drop your track and get its integrated loudness in LUFS, its true peak in dBTP and its loudness range, measured to the ITU BS.1770 standard right in your browser. The result is compared against the targets that matter: minus 14 LUFS for Spotify and YouTube, minus 16 for Apple Music, minus 23 for broadcast.

Streaming services turn masters down to their target loudness, so a crushed master just loses its punch. Keep true peak under minus 1 dBTP to avoid clipping when your track is converted to lossy formats.