Verify the real selected device
List available inputs after permission and show the active track's settings.
Local microphone level and playback test
Test your microphone before the call.
Confirm the selected input is live, loud enough, not clipping, and understandable through a short local playback.
Use the free toolPermission on demand
microphone test
Permission is requested only after you press start. Audio stays in the browser and is never transmitted or saved unless you explicitly download a test recording.
Ready—permission has not been requested
Private by design. Microphone audio is analyzed and optionally recorded locally; no audio stream is sent to this site's server.
Live input
Waiting for speech
0%RMS level
0%Peak level
-100 dBFSApproximate level
—Channels
—Sample rate
Local playback sample
No file was uploaded. Downloading is optional.
The jobs this tool completes
Built around the failure points.
Measure silence and clipping
Display live peak/RMS level and explain when speech is too quiet or repeatedly clipped.
Hear a local sample
Record a short bounded clip and play it back without uploading audio.
Workflow
From input to an auditable output.
- Press start and grant microphone permission to this page when the browser asks.
- Select the desired device, speak normally, and watch the live level and clipping indicators.
- Record and replay a short sample, then stop all tracks and revoke the page permission if desired.
Learn the details
Use the result with fewer surprises.
Guide
Fix a microphone that is too quiet or clipping
Use level, distance, gain, operating-system input settings, and test playback to correct common microphone problems.
Read guide →GuideBrowser microphone permission and privacy
Understand when a site can access a microphone, how device labels appear, how to stop tracks, and how to revoke access.
Read guide →Common questions
What this tool does—and does not do.
Verify the real selected device
List available inputs after permission and show the active track's settings.
Measure silence and clipping
Display live peak/RMS level and explain when speech is too quiet or repeatedly clipped.
Hear a local sample
Record a short bounded clip and play it back without uploading audio.
Does this guarantee the result will be accepted elsewhere?
No. The tool completes and explains its calculation or transformation, but another platform can apply different limits, rules, encoders, or policies. Verify consequential output in the destination.
Ready
Start microphone test
Return to the tool with your inputs still in this tab.