Decibel Meter
Professional sound measurement in your browser. No installation required.
Hearing Protection
Monitor noise levels to protect your hearing health
Workplace Safety
Ensure environment meets safety standards
Educational Tool
Learn about sound levels and health impacts
Understanding Sound Levels
Learn about decibels, noise levels, and how to protect your hearing with our comprehensive guide
What is a Decibel (dB)?
A decibel (dB) is a unit used to measure the intensity of sound. It's a logarithmic scale, which means each 10 dB increase represents a 10-fold increase in sound intensity.
Key Facts:
• 0 dB is the threshold of human hearing
• Every 10 dB doubles the perceived loudness
• 80+ dB can damage hearing over time
A-Weighting
Our meter uses A-weighting, which adjusts measurements to match how the human ear responds to different frequencies.
Why A-weighting?
• More accurate for everyday sounds
• Reduces low-frequency emphasis
• Standard for noise exposure limits
Health Impact
Prolonged exposure to loud sounds can cause permanent hearing damage and other health issues.
Safe Exposure Times:
• 85 dB: 8 hours maximum
• 90 dB: 2.5 hours maximum
• 95 dB: 47 minutes maximum
• 100 dB: 7.5 minutes maximum
Accuracy Notes
Measurement accuracy depends on your device's microphone quality and environmental conditions.
Important:
• Results are for reference only
• Different devices may vary
• Not certified for professional use
• Use calibrated equipment for critical measurements
Common Sound Levels Reference
Legend: Safe levels• Potentially harmful levels
Frequently Asked Questions
Is this tool accurate?
Our tool provides reference measurements suitable for general use. For professional, medical, or legal purposes, please use calibrated sound level meters.
Why do I need microphone permission?
Microphone access is required to measure sound levels from your environment. We process audio locally and never record or transmit your audio data.
What's the measurement range?
Our meter measures from 30 dB (very quiet environments) to 130 dB (extremely loud sounds), covering most everyday situations and workplace scenarios.
Does this work on mobile devices?
Yes! Our tool is fully optimized for mobile devices and works in modern browsers like Chrome, Safari, Firefox, and Edge on both iOS and Android.