LUFS Meter Online
LUFS Meter Online
Drop your mix and get its integrated LUFS, short-term max, peak and loudness range — checked against Spotify, Apple Music and YouTube targets. No upload.
Measure the LUFS of your mix
Drop a bounce above and this free LUFS meter measures its integrated loudness the standard way: K-weighted, 400 ms blocks, absolute and relative gating per ITU-R BS.1770 — the same math streaming platforms use when they normalize your track. You also get the short-term maximum, the sample peak and an approximate loudness range (LRA).
How to check your master
- Export your mix or master as WAV or MP3.
- Drop it in the meter and read the integrated LUFS.
- Compare with the platform verdicts: if Spotify will turn you down 4 dB, that is 4 dB of limiter punishment you paid for nothing.
What the numbers mean
Integrated LUFS is the loudness of the whole song; streaming normalization targets sit around −14 (Spotify, YouTube) and −16 (Apple Music). Short-term max shows how loud your loudest section is. Sample peak should stay under −1 dBFS so lossy encoding does not clip. LRA describes dynamics: 3–6 LU is common for modern loud genres, 6–10 for dynamic mixes.
Full platform-by-platform numbers live on our Streaming Loudness Targets page. And remember: louder than the target does not stream louder — it just gets turned down with less dynamics left.
FAQ
Is this LUFS meter free and accurate?
Yes, free forever. It implements the BS.1770 measurement (K-weighting + gating) that platforms use; on typical program material it lands within about 0.1-0.3 LU of desktop meters.
What LUFS should I master to?
For streaming, a common sweet spot is around -14 to -9 integrated depending on genre: the platform normalizes to about -14 anyway, so chase punch and balance rather than the number. For clubs, DJs expect much hotter masters.
What is the difference between LUFS and dBFS?
dBFS measures the instantaneous sample level; LUFS measures perceived loudness over time with frequency weighting. Two songs can both peak at -1 dBFS and differ by 6+ LUFS.
Why is my track quieter on Spotify than others?
If your integrated LUFS is far below -14, normalization may not fully bring it up (and never boosts above peak limits). If it is far above, it gets turned down - the loudness war is a tie by design.
Does the meter upload my unreleased track?
No. Decoding, resampling and measurement all run locally in your browser - the file never leaves your machine.
Related free tools
Loud is easy. Good and loud is the sauce.
The Vocal Chain Bible shows how Grammy engineers build records that hit at any loudness - and Meshplugins.com has the tools.
Real sauce. No fluff.