// multi-utility computation suite · offline · instant · precise
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sci.audio-loudness-LUFS Calculator
Calculates integrated loudness in LUFS (Loudness Units Full Scale) from RMS measurement with K-weighting filter, used for broadcast loudness normalisation. EBU R128 target = −23 LUFS for European broadcast; −24 LUFS for US streaming (ATSC A/85) — Spotify and YouTube use −14 LUFS for music to preserve dynamic range.
Inputs
L Short Lufs
Reference formula or conversion factor shown for context.
L Integrated Lufs
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Lra Lu
Reference formula or conversion factor shown for context.
Tp Dbfs
Reference formula or conversion factor shown for context.
Results
gain adjustment to EBU R128 target (dB)
The improvement or increase over the baseline.
gain adjustment to streaming −14 LUFS (dB)
The improvement or increase over the baseline.
EBU R128 compliance
Sample size or count used in the calculation.
integrated loudness (LUFS)
The value at the specified point or condition.
EBU R128 targets
Reference formula or conversion factor shown for context.