LUFS Checker
Measure loudness of your audio per ITU-R BS.1770. Your files never leave your browser.
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Integrated Loudness
LUFS
Loudness Metrics
Short-term
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LUFS
Momentary
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LUFS
True Peak
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dBTP
Loudness Range
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LU
0:00 / 0:00
Streaming Platform Penalties
Check streaming penalties →How to Measure LUFS
- 1 Upload your audio file
- 2 Get LUFS-I, LUFS-M, LUFS-S, True Peak, and LRA
- 3 Compare against streaming platform targets
Frequently Asked Questions
What is LUFS?
Loudness Units relative to Full Scale — the standard for measuring perceived loudness. Streaming platforms normalize to specific targets (Spotify: -14 LUFS, Apple Music: -16 LUFS).
What is the difference between LUFS-I, LUFS-M, and LUFS-S?
Integrated (I) measures the entire track. Momentary (M) uses a 400ms window. Short-term (S) uses a 3-second window. Streaming platforms use Integrated for normalization.
