File Loudness Meter – Check LUFS, True Peak & LRA of Audio Files
LUFS · LRA · peakReady
- Allow the mic in the address bar
- Choose the right input device
- Audio never leaves the tab
- Runs inside your browser
- No upload, no account
- Nothing saved after you close
Analyse audio file loudness in LUFS
This file loudness meter measures integrated LUFS, short-term maximum, loudness range and peak of an audio file. Choose a WAV, MP3, AAC or FLAC file; it is analysed in your browser and never uploaded.
Integrated loudness
Gated average across the file, the number streaming services normalise to.
Loudness range (LRA)
LRA describes variation between quiet and loud passages: below 5 LU is dense pop, above 10 LU is cinematic or classical.
Peak and true peak
Sample peak shows the highest sample; inter-sample peaks can be higher after conversion.
How to Use the
File Loudness Meter
- 01
Choose
pick an audio file from your device.
- 02
Wait
analysis takes a few seconds.
- 03
Read
integrated LUFS, LRA and peak appear.
- 04
Adjust
the target list shows how much gain each platform applies.
Integrated loudness
Gated average across the file, the number streaming services normalise to.
Loudness range (LRA)
LRA describes variation between quiet and loud passages: below 5 LU is dense pop, above 10 LU is cinematic or classical.
Peak and true peak
Sample peak shows the highest sample; inter-sample peaks can be higher after conversion. Keep peaks below −1 dBFS for streaming.
Mastering for streaming
Aim for the platform target or slightly above; a loud master is turned down anyway.
What you get
All measurements included
Integrated, short-term maximum, loudness range and peak, free and without an account.
Privacy
Does the meter send data to a server?
No. Files are decoded and analysed in your browser.
Related guides and fixes
Learn more in these guides: Loudness standards table, Microphone not working, Microphone settings, Discord mic fixes, Decibel levels chart, What is LUFS.
Frequently Asked Questions
Q.Are files uploaded?
No, they are decoded locally.
Q.Which formats work?
Anything your browser can decode: WAV, MP3, AAC, FLAC, OGG.
Q.Is this certified?
No, values are close but not certified.