Decibel Meter
Press Start and allow microphone. Live dB reading, peak, and average update in real time.
Press Start to use your microphone for live dB SPL measurement. Browser readings are RELATIVE - real SPL needs hardware calibration. Useful for comparing relative loudness, not absolute reference.
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dB SPL (relative)
Peak dB--
Average dB--
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Decibel Meter guide
How to use the Decibel Meter accurately
A browser-based decibel meter uses your devices microphone to measure ambient sound levels in real time, displaying readings in dB (decibels SPL). Useful for checking noise in offices, gaming setups, restaurants, and music studios.
Decibel Meter FAQ
Common decibel meter questions
Checklist
Audio checks to confirm
- What Is an Online Decibel Meter? A browser-based decibel meter uses your devices microphone to measure ambient sound levels in real time, displaying readings in dB (decibels SPL).
- How to Read the dB Numbers 30-40 dB: Whisper, very quiet room.
- Use Cases Workspace noise check - Verify your office is below the OSHA 85 dB safe threshold.