Noise Meter Online
How loud is it around you? Find out in seconds – free, in your browser.
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Recent trend
Start measuring to draw a live trend.
Calibration offset
Reference only. Use a certified sound level meter for calibration-critical work.
How to use
Disclaimer: Measurement results are estimates for reference and education only. Do not use them for professional, medical, legal, or compliance decisions.
Put a number on the noise
Construction outside, a humming fridge, neighbors’ music, a loud open-plan office – noise is easier to discuss when you can put a number on it. This noise meter uses your microphone to show a live decibel estimate of your surroundings.
Measure noise in real time
Press start and watch the level respond as the noise changes. Peak values catch short spikes – a door slam, a passing truck – while the average shows what the environment is really like over time.
Common guideline values
The WHO recommends keeping bedrooms around 30 dB at night for restful sleep, many cities enforce evening quiet hours, and 85 dB is the widely used threshold where workplaces must manage noise exposure. Our comparison chart shows what each level sounds like.
Documenting a noise problem
If noise keeps bothering you, measure at the same spot and time of day over several days and note the conditions. Browser readings are not accepted as legal evidence – authorities use certified meters – but a consistent log helps you show a pattern and decide whether to escalate.
Frequently asked questions
Can I use these readings for a noise complaint?
As supporting information, yes; as legal proof, no. Authorities and courts rely on certified, calibrated measurements. A log of browser readings can still make your case more concrete when you contact a landlord or local authority.
What noise level is normal at night?
Guidelines aim for roughly 30 dB inside bedrooms – about the level of a quiet whisper. Regular night-time noise above 40–45 dB indoors makes restful sleep noticeably harder for most people.
Noise meter, dB meter, decibel meter – what’s the difference?
They are the same measurement under different names: sound level expressed in decibels. Use whichever tool page you prefer – the meter behind them is identical.
Open the full decibel meter for charts, session history, and shareable measurement results.