Yuzool

Noise meter

How loud is it? An estimate in decibels, with the quietest, average and loudest moments.

–dB
Estimate: phone mics aren't calibrated
Tap Start to measure
20406080100120
Min–
Avg–
Max–
0:00
Last minuteOffset +100 dB
How loud is that?

Nothing is recorded: the page reads the microphone's level and keeps only the numbers. For a closer reading, set the offset against a real sound level meter in Settings.

About the noise meter

Use this noise meter to put a number on noise: a neighbour's music, a busy office, traffic outside a bedroom window, a child's toy. It shows an estimate of the level in decibels, how it changed over the last minute, and the quietest, average and loudest moments while it ran.

The list beside the meter compares the level with everyday sounds, from a quiet library to a busy road, so the number means something.

Nothing is recorded: the page reads the microphone's level and keeps only the numbers. Works on phones and on computers with a microphone.

How to use it

  1. Tap Start and allow microphone access.
  2. Put the phone where you want to know the level, such as your bed or desk, and leave it still.
  3. Leave it running through the noise. The average and maximum keep updating.
  4. Tap Stop to see the summary for that stretch of time.

Good for

  • Getting a rough idea of how loud noise from next door is
  • Checking whether a workplace might need a proper noise assessment
  • Comparing quiet rooms for sleep or study
  • Checking toys and headphones out loud before giving them to a child

When is noise too loud?

The NHS advises that sounds of 85 dB or more can damage your hearing over time, and the louder the sound, the shorter the time it takes. UK workplace rules (the Control of Noise at Work Regulations) require employers to act from an average of 80 dB(A) over a working day, and to provide hearing protection from 85 dB(A).

A phone reading is an estimate. If it shows levels near those numbers at work, ask for a proper assessment with a calibrated meter.

Questions

Can I use a noise meter app as evidence for noise complaints?

A phone reading can help you describe the problem, but councils and courts rely on their own calibrated equipment. Keep a diary of dates, times and what you heard alongside any readings.

How many decibels is too loud?

The NHS says sounds of 85 dB or more can damage hearing over time, sooner the louder they are. Normal conversation is about 60 dB.

Why do two phones show different noise levels?

Their microphones and sound processing differ, and neither is calibrated. Use one phone for comparisons, and set its offset against a real meter if you can.

More tools in Bubble Level

Bubble levelSpirit levelLevel appInclinometerAngle finderOnline rulerRuler on screencm rulerInch rulerProtractorCompassDecibel meterSound level meterNoise meter

Everything is in one free app: Bubble Level. Guide: How to hang a picture straight.