Measure sound loudness levels by using a microphone on your phone, laptop or desktop computer. Measure a true perceived loudness or use old SLP algorithm. Get exact ITU loudness measurements from audio files.

Youlean Loudness Meter is your ultimate free VST, AU and AAX plugin for loudness measurement. Featuring LU, LUFS, LKFS, LRA and PLR measurements.

The APU Loudness Meter plug-in is a free dynamic range analysis tool supporting a variety of loudness types (LUFS, True Peak, RMS, Peak). View changes to your audio’s loudness in real-time or get a bigger-picture look with configurable history and histogram views.

Maztr's free online Audio Loudness Meter is a quick and easy tool you can use right in your browser, without downloading any software, to measure live loudness data from your audio files. No account or login is required to use it.

MiniMeters is a simple standalone audio metering app for Windows, macOS, & Linux. Monitor your System Audio*, Any Input, or insert the MiniMetersServer Plugin** (VST3/AU/CLAP) at the end of your master channel in the DAW of your choice.

Using Youlean Loudness Meter will ensure you are compliant with the law regulations regarding loudness standards. Many broadcasters around the globe trust Youlean Loudness Meter to stay on the right side of the CALM Act (or any other regulation required in their country).

We reviewed five of the best loudness metering and analyzing plugins for you and four excellent free ones. In the present world of streaming and online broadcasting, mixing and mastering your audio to the standard maintained by specific platforms is essential for quality assurance.