Microphone Test: Check Your Mic Online, Hear Yourself and See the Level

Click start, allow microphone access and speak. The bar and waveform move when your microphone picks up sound, and you can record five seconds to hear exactly what other people hear. Everything stays in your browser; nothing is recorded on a server.

Click “Start microphone test” and allow microphone access when your browser asks.

Level

– dBFS now
Peak – dBFS. Speech usually sits around −30 to −10. Near 0 means clipping.

Record and play back (5 s)

Hear exactly what others hear. The recording stays in this page and disappears when you leave.

Device details

Device–
Sample rate–
Channels–
Noise suppression–
Echo cancellation–

Runs entirely in your browser. Nothing you say is recorded on a server or sent anywhere.

How to use this microphone test

  1. Click “Start microphone test” and choose Allow when your browser asks.
  2. Speak normally. The green bar and the blue waveform should move. Speech usually sits between about −30 and −10 dBFS.
  3. Record 5 seconds and press play to hear how you sound.
  4. Several microphones? Pick another one from the Microphone list. A headset, a webcam and a laptop often each have their own.
  5. Click Stop when you’re done. Your browser stops using the microphone.

What your result means

  • “Your microphone is working”: the browser receives sound. If an app such as Zoom or Teams still can’t hear you, the problem is in that app’s audio settings.
  • “No sound detected yet”: the browser opened a microphone, but it hears silence. The wrong device is often selected, a mute switch is on, or the input volume is at zero.
  • “Very loud: the signal is clipping”: the sound is distorting. Move back from the mic or lower its input volume.
  • “Access was blocked”: your browser or Windows is refusing access (see below).
  • “No microphone was found”: the computer doesn’t see any microphone at all.

If your microphone isn’t working (Windows 11)

  1. Check mute and connection: look for a mute button or switch on the headset; re-plug USB; re-pair Bluetooth.
  2. Allow access in Windows: Start → Settings → Privacy & security → Microphone. Turn on Microphone access, Let apps access your microphone and Let desktop apps access your microphone (browsers count as desktop apps).
  3. Choose the right input: Settings → System → Sound → Input → Choose a device for speaking or recording.
  4. Check the input volume: in the same place, open the microphone’s Input settings and raise Input volume.
  5. Allow access in your browser: click the icon to the left of the address bar and set Microphone to Allow, then reload.
  6. Close other apps that may be holding the microphone, then try again.
  7. Driver: Device Manager → Sound, video and game controllers → right-click the audio device → Update driver.

These steps follow Microsoft’s own guide, Fix microphone problems.

Fix it: step-by-step guide: Microphone not working on Windows 11? A step-by-step fix.

How it works

The tool uses your browser’s standard media API (getUserMedia) to open the microphone you allow. It measures the signal level in the browser with the Web Audio API.

The level is shown in dBFS, decibels relative to the loudest possible digital signal. That makes 0 the maximum, and real speech sits well below it.

Limits:

  • Your browser may apply noise suppression and echo cancellation (shown under Device details), so the level isn’t identical to what a recording app would capture.
  • The tool can’t measure frequency response or noise floor in calibrated terms.

Privacy

The recording is kept in this page’s memory only and disappears when you leave. No audio is uploaded, stored or analysed anywhere else.

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Last updated: October 5, 2026. Built and maintained by 123EasyTech.