RMS & Peak Audio Analyzer
Measure full-file decoded-sample RMS, sample peak and crest factor without uploading the file.
What RMS means here
RMS is calculated from all decoded samples in the full file. It is a mathematical signal-level measure, not ITU/EBU integrated loudness and not LUFS. Sample peak is the largest absolute decoded sample. Crest factor is the dB difference between sample peak and RMS.
How to interpret results
A larger crest factor usually indicates more separation between average energy and peaks; a smaller crest factor can indicate denser or more compressed material. Interpretation depends on content and does not by itself determine sound quality.
Limitations
This analyzer does not apply frequency weighting, gating, true-peak reconstruction, short-term LUFS or broadcast standards. Browser decoding can also change the exact sample representation of compressed formats compared with another decoder.
Privacy and metadata
The file is decoded locally. No upload is required. Analysis does not modify the source file and does not export or rewrite metadata.
FAQ
Can I use RMS as LUFS? No. Does 0 dBFS mean safe after encoding? Not necessarily; inter-sample peaks may exceed sample-peak measurements. Does this detect clipping? It reports sample peaks but is not a complete clipping-forensics tool.