Use the free Online Microphone Test below: your data never leaves your browser — all work happens on your device, and nothing is uploaded to any server.
The five-minute check that saves a ruined meeting
Almost everyone has joined a video call, spoken confidently for a minute, and then read the chat: we cannot hear you. The meeting moves on, the moment is lost, and the rest of the call is spent troubleshooting instead of talking. A microphone test before the meeting prevents that entire story. It takes less than a minute. You press a button, allow the microphone, speak a sentence, and watch a bar move. If the bar moves, your microphone works. If it does not, you have found the problem while you still have time to fix it, instead of in front of an audience.
That is all this tool does, and it does it honestly. It reads your real microphone signal through an AnalyserNode, the browser’s built-in way of measuring audio, and shows your live volume as a bar and a number. There is no simulated bar that dances on its own to make you feel better. If the bar is flat, your microphone is not sending sound, and the tool says so instead of pretending otherwise.
What the numbers on the test mean
The bar shows peak level as a percentage: how loud your loudest moment is right now, compared to the maximum. The RMS number in decibels shows your average loudness, which is closer to how loud you actually sound to other people. Peak hold remembers your loudest moment during the test, so you can glance at it after speaking instead of staring at the screen while you talk. A normal speaking voice, at a normal distance, should push the bar well past halfway on loud words. If your loudest shout barely moves it, your microphone is too far away, too quiet, or the wrong device is selected.
At the end of the test, the tool gives you a verdict. If it picked up sound above a clear threshold, it tells you the microphone is working and how loud you got. If it picked up nothing, it tells you that too, with the most likely fixes. That verdict is based on your actual signal, not on whether your operating system claims a microphone exists. A microphone can exist in settings and still send nothing, because it is muted, unplugged, or not the device the browser is using.
How to use this microphone test
Press Start test and allow microphone access when your browser asks. The page will show the name of the microphone it connected to, if your browser shares it, so you can confirm it is the headset you meant to use and not the laptop microphone across the room. Speak a normal sentence, then a louder one, then a quiet one. Watch how the bar responds to each. Press Stop test and read the verdict. If it says working, you are ready for your call, interview or recording. If it says no sound was picked up, work through the fixes below before you try again.
One tip that solves half of all microphone problems: check the physical mute. Headsets have mute buttons, laptops have mute keys, and video apps have their own mute on top of that. A test that shows no sound while every mute looks off usually means the wrong input device is selected. In your system sound settings, speak and watch which device’s level moves. That moving device is your real microphone. Select it, and test again.
What this test cannot tell you
This test measures volume only. It cannot judge sound quality, and it cannot tell you whether you sound good. A cheap microphone that crackles will still move the bar, because crackling is sound. A quiet microphone that works perfectly will move the bar only a little, because it is quiet. If the bar moves but people still complain about your audio, the problem is quality, not connection: try a different microphone, move closer, or move away from fans and keyboards. Volume and quality are different problems, and this test solves the first one, which is the one that ruins meetings.
Common questions
Is my voice recorded or uploaded? No. The test reads the live signal to measure volume and discards it. Nothing is saved or sent anywhere. Why does the browser ask for permission? Because microphone access is sensitive, and browsers require your explicit yes before any page can listen. If you deny it, the test cannot run, and it will tell you that plainly. Can I test a specific microphone? Select it in your system sound settings first, then start the test, and check the device name the page reports.