Dynamic Range Meter Online
Explore the contrast between quiet and loud parts of your audio. Measure loudness range and crest factor, with a level plot to help interpret the result.
READY TO ANALYZE
Drop your audio here
Up to 50 MB · 5 minutes · Mono or stereoYour measurements will appear here
Choose your audio and start the check.
Are LRA and crest factor the same measurement?
No. LRA describes variation in sustained loudness and is measured in loudness units. Crest factor is the difference between sample peak and RMS level. They describe different aspects of dynamics and should be read together.
Keep the musical context
There is no single best dynamic-range number for every recording. A spoken lesson, a dance track, and an orchestral piece need different contrasts. Very short files provide little evidence about long-term loudness variation.
Questions about this tool
Are LRA and crest factor the same measurement?
No. LRA describes variation in sustained loudness and is measured in loudness units. Crest factor is the difference between sample peak and RMS level. They describe different aspects of dynamics and should be read together.
Can I download the result?
Yes. Analysis tools provide a report you can save. Audio Normalizer and Volume Booster also create a WAV you can play and download. Keep the page open until your result has arrived.
Which files can I check?
Upload mono or stereo WAV, MP3, M4A, AAC, FLAC, OGG, OPUS, or WebM audio, up to 50 MB and five minutes. The measured file keeps its original channels.