The fastest way to test a microphone is to open a browser mic test, allow access and speak: if the level meter moves with your voice, the mic, cable and drivers all work, and any problem left is a setting in the app you are using. If the meter stays flat, the fix is almost always one of four things: a privacy switch, the wrong input device, a mute button, or another app holding the mic. This guide shows how to test a microphone on Windows, Mac, iPhone and Android, and how to work out which of those four is stopping it.
Open the Microphone Test in another tab and press Start. It shows a live level meter and waveform, says "Sound detected" once your voice passes −50 dBFS, and lets you record a 5-second clip to hear yourself back. Everything runs in your browser; no audio is uploaded.
How to test your microphone in 30 seconds
- Open the Microphone Test and press Start mic test.
- Choose Allow when the browser asks for microphone access.
- Speak at a normal volume. The meter and waveform should move, and the status should change to "Sound detected".
- If you have several microphones, pick the one you want in the Microphone list.
- Press Record 5 seconds, speak, and listen to the playback to hear how you actually sound.
- Press Stop and release mic when you are done.
How to read the result:
| What you see | What it means | What to do |
|---|---|---|
| Meter moves, status says Sound detected | The mic works | If an app still cannot hear you, check that app's input setting and its permission |
| Browser says access is blocked | The browser or the system denied permission | Allow the site in browser settings, then check the system privacy switch below |
| "No microphone found" | The system sees no input device | Reconnect it, try another port, check Bluetooth pairing or the driver |
| Meter is completely flat, warning about digital silence | The mic is connected but sending nothing | Look for a mute button on the headset or cable, or a muted input in system settings |
| Meter hits the top and clipping warning appears | The signal is too loud | Lower the input volume or move the mic farther away |
| Mic is "in use" or cannot start | Another app holds the mic | Close video call and recording apps, then try again |
A working meter rules out the hardware. From there, the question is only which setting is blocking the app you care about.
How to test a microphone on Windows
Microsoft's guide to setting up and testing microphones in Windows covers Windows 11 and Windows 10:
- Open Settings > System > Sound. Your microphones are listed under Input.
- Select your microphone to open its properties.
- Under Input settings, start the test and speak normally, then stop it and check the result. Adjust the Input volume slider if your voice is too quiet.
- Make sure the right microphone is selected as the default input, especially if you have a webcam, a headset and a laptop mic at the same time.
If an app still cannot hear you:
- Open Settings > Privacy & security > Microphone. Turn on microphone access, let apps use it, and for programs installed outside the Store, turn on Let desktop apps access your microphone. Microsoft explains each switch in Windows camera, microphone, and privacy.
- Check the mute button on your headset or its inline cable.
- Run the Recording Audio troubleshooter and, if needed, reinstall the audio driver from Device Manager, as Microsoft's Fix microphone problems page describes.
How to test a microphone on a Mac
- Choose Apple menu > System Settings, then click Sound in the sidebar.
- Under Input, select the microphone you want. Apple's guide to sound input settings lists the options: the built-in microphone, a display's microphone, an iPhone microphone or an external mic.
- Speak and adjust the Input volume slider: lower it for loud sources, raise it if you sound faint.
If one app hears nothing, open System Settings > Privacy & Security > Microphone and turn access on for that app (Apple's instructions). An app that was denied access will hear silence even though the mic works everywhere else. A recording indicator in Control Center shows when the mic is in use or was used recently, which helps you spot an app that is still holding it.
How to test a microphone on iPhone
The simplest test is to record a short voice memo or video and play it back. If it sounds right, the microphones work. To check that a specific app is allowed to use them:
- Open Settings > Privacy & Security > Microphone.
- Turn access on for the app. Apple notes that an app appears in this list only after it has asked for permission (Apple's guide).
An orange dot near the top of the screen means an app is using the microphone. If the mic sounds muffled or does not work in any app, Apple has a separate checklist: If the microphones on your iPhone aren't working.
The browser Microphone Test works on iPhone too. Safari or Chrome will ask for permission the first time.
How to test a microphone on Android
Record a short voice note or video and play it back, or open the Microphone Test in Chrome. If nothing comes through, check the two switches Google describes in Android Help:
- Device-wide microphone access. On Android 12 and later, swipe down twice from the top of the screen and look for the microphone access tile. If it is off, every app hears silence. The same switch is in Settings > Security & privacy > Privacy > Privacy controls.
- Per-app permission. Open Settings > Apps, pick the app, tap Permissions and set Microphone to allow (Google's steps).
A green indicator in the top right corner appears while an app uses the camera or mic. Menu names vary by phone maker, so the exact path on a Samsung or other phone may differ slightly.
Microphone works in tests but not in the browser
If system settings show your voice but a website hears nothing, the browser is blocking the site. In Chrome on a computer, click the icon to the left of the address, open Site settings and set Microphone to Allow, or go to Settings > Privacy and security > Site settings > Microphone, where you can also choose which microphone Chrome uses by default (Chrome Help). Chrome cannot use the microphone if the operating system has turned access off, so check the system privacy switch from the sections above as well. On a work or school computer, an administrator may lock these settings.
Then reload the page. Most sites only ask for the microphone when the page starts.
How to check how good your microphone sounds
A level meter tells you a signal is arriving, not how good it is. To judge quality:
- Listen to a recording. Use the 5-second playback in the Microphone Test, or make a longer take with the Audio Recorder and listen on headphones for hiss, echo and muffled consonants.
- Watch the peaks. Normal speech should move the meter well above the −50 dBFS "sound detected" line without touching 0 dBFS. Hitting 0 dBFS means clipping, which sounds like crackle and cannot be fixed afterward.
- Check the processing. The test shows whether your browser applies echo cancellation, noise suppression and automatic gain. These help on calls but can make a voice sound thin.
- Try a transcription. If Speech to Text gets most words right, your mic is clear enough for calls and dictation. Our guide to how Whisper speech-to-text works explains why clean input matters.
If a recording is too quiet after the fact, the Audio Volume Normalizer can raise it to a consistent level.
Common questions
How do I know if my mic is working? Open a microphone test and speak. If the level meter moves with your voice, the microphone works; if it stays flat, check the privacy switches, the selected input device and any mute button.
Why can people not hear me even though my mic works? The call app is usually using a different input device or lacks permission. Choose the right microphone in the app's audio settings and make sure the app is allowed under your system's microphone privacy settings.
Why is my microphone so quiet? The input volume is low or the mic is too far away. Raise the input volume in Windows or Mac sound settings, move the mic closer to your mouth, and check that the app is using the microphone you expect.
Does an online mic test record my voice? The UtilityKit test measures levels in your browser with the Web Audio API and uploads nothing. The optional 5-second recording stays in your browser for playback.
How do I test a headset microphone? Plug it in or pair it, select it as the input in system settings or in the test's Microphone list, and check that the mute switch on the headset or cable is off.