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HQ8T

Decibel Meter

Measure noise levels in dB with your mic.

–dB

Tap Start and allow the microphone

Min

–

Average

–

Max

–

Calibrate (0 dB)

If you have a real sound level meter, adjust until both show the same value. Saved for this browser.

Typical sound levels
30 dBWhisper, quiet library
40 dBQuiet room at night
60 dBNormal conversation
70 dBBusy office, vacuum cleaner
85 dBHeavy traffic: long exposure can harm hearing
100 dBMotorbike, pressure cooker whistle close by
110 dBLoud concert, DJ, firecrackers

How to use

  1. 1Tap Start measuring and allow the microphone.
  2. 2Hold the device still, pointing towards the sound.
  3. 3Read the live level, plus min, average and max.
  4. 4Compare with the typical sound levels table.

Frequently asked questions

How accurate is a phone decibel meter?

It's an estimate, usually within 5–10 dB, because phone mics differ. Use the calibration slider with a real meter for better accuracy.

What noise level is harmful?

Long exposure above about 85 dB can damage hearing. Short bursts above 120 dB, like firecrackers up close, are harmful too.

Is the sound recorded?

No. Only the loudness is measured, live in your browser; nothing is recorded or uploaded.

Why does it stop at about 100–110 dB?

Phone and laptop microphones overload at very loud levels, so readings near the top are less reliable.

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