DeviceCheck Pro

Mic test

Check your microphone before a call or stream. See the live level, confirm which input the browser is using, then record five seconds and hear yourself back.

Microphone
IdleTestingPassFault

Your browser will ask for permission. Audio stays on this device.

quietgoodloud
–level now (dBFS)
–loudest so far (dBFS)
–sample rate
–active input

Reading the level meter

The meter shows dBFS: decibels relative to the loudest signal the recording can hold (0 dBFS). Normal speech at a sensible distance usually peaks somewhere around −20 to −10 dBFS. Consistently below −30 means the other side will strain to hear you; touching 0 means clipping, which sounds harsh and crackly.

If the mic works elsewhere but not here

  1. Choose the right input from the dropdown. After permission is granted the browser lists every microphone by name.
  2. Check the browser permission: the camera/mic icon in the address bar, or Settings → Privacy → Site settings → Microphone.
  3. Windows: Settings → Privacy & security → Microphone → allow desktop apps. macOS: System Settings → Privacy & Security → Microphone → enable your browser.
  4. Close apps that may hold the mic exclusively (some headset utilities, DAWs, OBS).

This page checks input only. For speaker, headphone and hearing checks with tones and sweeps, AudioTestPro is our sister site; a quick left/right check is on our speaker test.

Still not working? Describe it

An AI assistant suggests likely causes and fixes, cheapest first. It sees only what you type. Answers can be wrong; check your device maker’s support pages before opening anything up.

Questions

How do I test my microphone online?

Press “Start mic test” and allow microphone access when your browser asks. Speak normally: the level meter should move and the peak should land roughly in the green zone. Then record a few seconds and play it back to hear what others will hear.

The meter doesn’t move. What now?

First make sure the correct input is selected in the dropdown (headsets and webcams add their own microphones). Check that the mic is not muted by a hardware switch or in your operating system’s sound settings, and that no other app is holding it exclusively. On Windows, Settings → Privacy → Microphone must allow desktop apps and browsers.

Is my recording uploaded?

No. The recording is kept in your browser’s memory as a local audio blob and is discarded when you leave or reload the page. Nothing is sent to DeviceCheck Pro.

What do noise suppression and echo cancellation do?

They are the same processing browsers apply in video calls. Turning them off shows the raw signal from your microphone, which is useful for judging the hardware itself; turning them on shows roughly what a call app will send.

Why does my voice sound quiet or distant?

Usually gain is too low or the mic is too far away. Speak 10 to 20 cm from a headset or desk mic, raise the input level in your OS settings, and for USB microphones check you are speaking into the correct side (many are side-address).

Other checks