ESTIMATED INTEGRATED
—LUFSProgramme loudnessFREE CREATOR TOOL
YouTube LUFS Checker & Mastering Assistant
Upload your original audio or video export to check estimated loudness, peaks and headroom—then get an exact, practical recommendation for your YouTube master.
✓ Runs in your browser✓ Your file is not uploaded✓ No account required
STEP 1
Choose your delivery profile
STEP 2
Analyse your master
Drop your original file here
or
Audio: WAV, AIFF, FLAC, MP3, M4A/AAC · Video: MP4, MOV, WebM where supportedYour file is decoded and analysed on this device. Nothing is transferred to Pure Audio Insight.
Preparing analysis…0%
YOUR MASTER IS READY
Within the selected delivery target
PEAK LEVEL
—dBFSHighest sample peakEST. TRUE PEAK
—dBTPConservative estimateDYNAMIC RANGE
—dBPeak-to-loudness gapYOUR NEXT STEP
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RECOMMENDED OUTPUT CHANGE——
MASTERING CHECKLIST
Measurement note: this is a browser-based estimate intended to guide creator delivery decisions. Confirm critical commercial releases with a validated BS.1770/EBU R 128 meter in your DAW.
Disclaimer: Results are provided for guidance only. Pure Audio Insight is not responsible for the audio results, or for any decisions made or outcomes arising from their use.
MAKE BETTER UPLOADS
Understand your loudness result
What is LUFS?
LUFS estimates perceived loudness across a programme. It is more useful than a simple peak reading when comparing complete videos.
Why leave peak headroom?
Lossy encoding can create higher peaks between samples. A ceiling around −1 dBTP gives your master useful margin.
Do not chase a number
A clean, intelligible and dynamic master is better than a distorted one that only reaches a louder target.
KEEP THIS TOOL FREE
Found this useful?
Pure Audio Insight tools are free to use. If this checker helped your upload, you can support future tools with a donation.
Disclaimer
This tool provides browser-based estimates for general guidance only. Measurements may differ from YouTube, your DAW or other loudness meters depending on the file, browser and decoding. Pure Audio Insight is not responsible for the audio results produced by this tool, or for any loss, damage or outcome arising from decisions made using them. Always listen critically and verify important releases with your own professional tools.