Decibel Meter
Free online decibel meter using your phone's microphone. Measure sound levels in real-time, perfect for concerts, noise monitoring, and audio testing. Privacy-first: audio processed locally only.
1,312
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dB
060120 dB
Reference Levels
0-30 dB: Whisper, rustling leaves
30-60 dB: Normal conversation
60-80 dB: Busy street, vacuum cleaner
80-100 dB: Concert, power tools
100+ dB: Jet engine (dangerous)
About Decibel Meter
How does it work?
- Allow Microphone Access: When prompted, tap "Allow" to grant microphone permission.
- Start Measuring: Tap the "Start" button to begin real-time decibel measurement.
- Watch the Meter: The gauge shows current noise level in dB (decibels).
- Privacy First: All audio is processed locally on your device. Nothing is uploaded to any server.
Understanding Decibel Levels
- 0-30 dB: Very quiet (whisper, rustling leaves)
- 30-60 dB: Moderate (normal conversation)
- 60-80 dB: Loud (busy street, vacuum cleaner)
- 80-100 dB: Very loud (concert, power tools)
- 100+ dB: Dangerously loud (jet engine)
Tips
- Keep your phone at arm's length for accurate readings.
- Avoid touching the microphone area.
- Results may vary based on device hardware.