Free Online Sound Level Meter
Measure how loud your surroundings are using your device’s microphone. Press Start, allow access, and the meter shows the relative sound level in decibels with a live bar plus peak and average readings. It is a relative, uncalibrated meter referenced to digital full scale, so use it to compare loudness or spot noise rather than for legal or safety measurements. Audio is analysed in your browser and never recorded or uploaded.
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How to use Sound Level Meter
- Press Start and allow microphone access.
- Watch the live decibel reading and bar.
- Check the peak and average levels.
- Reset the peak or Stop when done.
Questions about Sound Level Meter
Is this a calibrated decibel meter?
No. It is a relative meter referenced to digital full scale, so the absolute value depends on your microphone and its gain. It is useful for comparing loudness, not for certified noise measurements.
Is the audio recorded?
No. The microphone stream is only analysed live in your browser to compute the level. Nothing is recorded, saved or uploaded, and the mic stops when you press Stop or leave the page.
About Sound Level Meter
Measure ambient noise levels in decibels with our free online Sound Level Meter. 100% browser-based, fast, and private—no login or file uploads required.
These audio tools edit sound without a desktop editor: trim and join clips, convert formats, record from microphone, and adjust volume, speed, pitch or equalisation while you listen to the result.
This tool runs in your browser. The file is not uploaded. Work on a copy and preview before downloading: trimming and speed changes are destructive to the loaded clip, and re-encoding a lossy file twice adds audible artefacts.