About SoundLevelTest.com
SoundLevelTest.com provides free, privacy-first browser tools for measuring and understanding sound. It was built by Nayeem, Software Developer of SoundLevelTest.com.
What the site provides
The site includes an estimated sound-level meter, a speaker test, a classroom noise monitor, and educational references about decibel levels and noise exposure. Guidance is researched from published material by NIOSH, OSHA, CDC, and the WHO; those organizations have not reviewed, approved, certified, or endorsed this site.
How information is prepared
Pages separate published exposure guidance from examples and browser estimates. Primary sources are linked beside relevant claims, and material changes are reviewed before a page's verification date is updated. Corrections are welcomed through the contact page.
Measurement limits
Browser-based readings are estimates. Built-in microphones and browser audio paths are not calibrated to one universal reference, so results vary by device, microphone, distance, orientation, environment, and software processing.
The tools are intended for practical orientation and comparison. Legal, workplace-compliance, clinical, or safety-critical decisions require an appropriately calibrated professional meter and qualified guidance.