LUFS Loudness Normalization & True Peak Gain Calculator

Calculate exact gain adjustments (dB) and True Peak limiter headroom to comply with ITU-R BS.1770 and EBU R128 targets for YouTube, Spotify, Apple Music, TikTok, Podcasts, and TV broadcast.

Measured Audio & Target Specs

Target Delivery Platform

Target Integrated LUFS

Max Allowable True Peak (dBTP)

Measured Audio Master Properties

Measured Integrated LUFS

Measured Max True Peak (dBTP)

Preset Master Mix Scenarios

Normalization Gain Adjustment PENALTY: TURNED DOWN

-3.50 dB

Audio is 3.5 dB louder than YouTube target and will be attenuated

Post-Normalization True Peak

-3.70 dBTP

Within -1.0 dBTP ceiling (+2.7 dB headroom)

Peak Limiter Compression Required

0.00 dB

No True Peak clipping detected

Streaming Loudness & Platform Analysis

Target Standard: -14.0 LUFS | -1.0 dBTP

Linear Gain Multiplier: 0.668x amplitude (66.8%)

FFmpeg Loudnorm Filter: loudnorm=I=-14:TP=-1:LRA=11

Inter-Sample Peak (ISP) Risk: Low Risk (Safe Headroom)

Frequently Asked Questions

Why did YouTube turn down my video volume?

YouTube automatically normalizes all video audio to approximately -14 LUFS. If your audio was mastered at -10 LUFS (a loud music master), YouTube lowers your audio by 4 dB so viewers do not experience sudden volume jumps between videos. Right-click any YouTube video and select "Stats for nerds" to view the exact volume percentage and attenuation penalty.

What is the difference between LUFS and RMS?

RMS (Root Mean Square) measures raw electrical signal energy equally across all frequencies. LUFS uses a psychoacoustic K-weighting curve that boosts upper-mid frequencies (where human ears are most sensitive) and rolls off sub-bass, providing an accurate measurement of how loud human beings actually perceive the sound.