Online Sound Meter
Watch digital microphone levels and compare quieter and louder moments. Readings are not calibrated room decibels.
How to use this audio tool
- Choose the microphone you want to check, then press Start. Your browser asks for access.
- Speak normally. Watch the live level; record a sample or compare relative levels.
- Use the result guidance below. Downloads stay on your device.
- 1
Prepare
Choose a quiet place. Allow microphone access when you start.
- 2
Test
Start the microphone and watch the input level.
- 3
Compare
Review your levels or play back a recording.
Sound level meter
Relative readings only. This is not a calibrated decibel meter.
Peak: 0 · Average: 0
Available inputs appear after you allow microphone access.
These readings describe digital input; they are not calibrated room decibels.
Audio is processed locally. Starting requests microphone permission. Stopping releases microphone tracks.
Listen, look, and compare at the same settings.
Your test summary is ready
Save the text file to keep your settings and listening notes. It does not contain microphone audio.
Download summary (.txt)Read your summary
What the online sound meter shows
To hear how your microphone sounds, use the microphone recording test. To check audio coming out of the device, use the speaker sound test. The meter measures microphone input, not speaker cleaning results.
LIVE
Watch the microphone level
Watch the microphone input change as the surrounding sound becomes quieter or louder.
PEAK
See the highest sound reading
See the highest recent reading during a short comparison.
LIMIT
These are not exact room decibels
Phone and laptop microphones vary, so browser readings should be treated as estimates unless calibrated.
When to use the sound meter
Use a browser sound meter for simple room comparisons, checking relative noise changes, or seeing whether an environment becomes louder or quieter.
Tips for a clear result
- Use the same device for comparisons.
- Keep microphone position consistent.
- Do not cover the microphone.
- Treat readings as estimates.
- Use a calibrated meter for safety or compliance decisions.
Sound meter questions
Does this measure room noise in decibels?
Without calibration, device microphones vary too much for guaranteed measurement accuracy.
Can I use this for workplace noise checks?
No. Use a properly calibrated sound level meter for safety, legal, or compliance decisions.
Why do two phones show different levels?
Different microphones, gain, processing, cases, and browsers can produce different readings.