14 days free · then €39 once · macOS 13+, Apple Silicon
About this tool
Free Online LUFS Meter & Loudness Analyzer
Measure the loudness of your audio files against industry standards. Get integrated LUFS, true peak and dynamic range readings with automatic checks for Spotify, Apple Music, YouTube and podcast delivery targets.
What it measures
- Integrated LUFS — overall loudness of the entire file
- True peak — inter-sample peak in dBTP (4× oversampled per BS.1770-4)
- Loudness range (LRA) — dynamic variation in LU (EBU Tech 3342)
- Dynamic range — spread of the 400 ms block loudness, in LU
Platform targets
Instantly check whether your audio meets the loudness requirements for Spotify (-14 LUFS), Apple Music (-16 LUFS), YouTube (-14 LUFS) and podcasts (-16 LUFS stereo, -19 LUFS mono), each with a true peak of at most -1 dBTP. Pass/fail indicators make it easy to spot issues before delivery.
Frequently asked questions
What is LUFS?
LUFS (Loudness Units relative to Full Scale) is the standard measurement for perceived loudness. Streaming platforms use LUFS targets to normalise playback volume across tracks.
Can I check loudness for Spotify?
Yes. The tool includes preset targets for Spotify (-14 LUFS), Apple Music (-16 LUFS), YouTube (-14 LUFS) and podcast standards. It flags any files that fall outside the target range.
Can I analyse multiple files at once?
Yes. Drop as many files as you need and get a full loudness report for each. Export all results to CSV for documentation.
Are my files uploaded anywhere?
No. All analysis runs in your browser using the Web Audio API. No files leave your machine.