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decibel meter on this site shows different number than my phone app

Ask By Derek S.142 views

tried the decibel meter and it says 52 but my other phone app says 41 in the same room. which one is right lol

Brand
Dell
Model
XPS 13
Connection
Built-in Speakers
System
Windows 10/11
Browser
Chrome 130
Sample Rate
48 kHz
Output Channels
2 channels
Volume And Decibel LevelsWindows PC
Tool used in this discussionDecibel MeterMeasure how loud a room is in dBA
Open Free Tool
Short Answer

Phone and browser meters often differ by 5 to 15 dB because each microphone is tuned differently. Neither is lab accurate, so compare changes, not the exact number.

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Rahul Verma
Rahul VermaAudio Team
Signal Analysis Expert · 4+ years experience · Answered Oct 22, 2026

Both numbers can be "right" and still differ. Every phone and laptop microphone has its own sensitivity, built-in noise reduction and automatic gain, so two devices in the same room rarely agree. A gap of 5 to 15 dB is common.

A browser or phone app is useful for comparing one moment with another, such as a quiet room against a loud one. It is not a replacement for a calibrated sound level meter when exact numbers matter.

Step By Step Fix
  1. Test both meters at the same spot with the microphones facing the same direction
  2. Turn off automatic gain or noise cancellation in the phone app if it offers that option
  3. Compare a quiet room and a loud room on each device and watch the difference, not the number
  4. Use a calibrated sound level meter if you need exact dBA for work or safety
  5. Keep headphone listening well below 85 dBA for long sessions
Sources
  1. NIOSH: Noise And Hearing Loss Prevention
  2. W3C Web Audio API

Checked by Diana Chen on . How we verify answers

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Community Replies 3

  • Chris PattersonCommunity Member

    phone mics do their own processing so they never match. i just use whichever and compare relative

  • Ashley RamirezCommunity Member

    yeah mine reads 10 db higher than my laptop in the same room

  • Thomas ReidCommunity Member

    I compared three phones in the same room and got three different numbers. Good for comparing, not for exact readings.

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Hearing & AnalysisMic TestCheck your microphone input with a live level meter
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Rahul Verma
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Rahul Verma

Signal Analysis Expert at Sound Test

Rahul Verma is the Signal Analysis Expert on the Sound Tester Audio Team. Specializes in spectrum analyzer node calculations, pink noise masking, and sound level monitoring tools. Shares quick browser audio fix logs and scripts on GitHub. On Sound Tester he answers decibel and safe volume discussions and explains why readings differ between devices.

Spectrum analysispink noisesound level monitoring
  • 7 answers on Sound Test
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  • Reviewed by Diana Chen
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Answers are free general guidance from the Sound Tester Audio Team and community. They are not medical advice. For hearing loss, ringing or ear pain, see a doctor or audiologist. Opening a device can void its warranty, so check the maker's support first for hardware faults.

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