LUFS
Find the gain trim needed to reach a chosen loudness standard in LUFS.
About LUFS
The difference between measured integrated loudness and the delivery standard is the trim to apply to the whole program. Loudness normalization means a wrong level is corrected for you, so mastering to a standard keeps your sound consistent.
Formula
LUFS
Trim = target LUFS - measured LUFS
- LU
- Loudness units, one LU equals one dB change in loudness
Worked example
With the default values below, LUFS returns Gain Trim of 4.0. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Measured loudnessaccepts -60–0 LUFS
- -18 LUFS
- Delivery standardone of Streaming music, -14 LUFS, Podcast, -16 LUFS, EBU broadcast, -23 LUFS
- Streaming music, -14 LUFS
Results
- Gain Trim
- 4.0 LU
- Target
- -14 LUFS
- Direction
- Add gain
Step by step
- 1Values used
- 2LUFS
- 3Gain Trim= 4.0 LU
- 4Target= -14 LUFS
- 5Direction= Add gain
Assumptions and limits
- The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 1 decimal place, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is LUFS calculated?
Trim = target LUFS - measured LUFS The difference between measured integrated loudness and the delivery standard is the trim to apply to the whole program.
Why does LUFS matter?
Loudness normalization means a wrong level is corrected for you, so mastering to a standard keeps your sound consistent.
What values do I need to enter?
This calculator takes 2 inputs: Measured loudness, Delivery standard. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.