Mic Test, Check Your Microphone Online
Test your microphone online, free and private. Live level meter, waveform, record and play back your voice. Nothing is uploaded, it all stays in your browser.
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This microphone test tells you in seconds whether your mic is working, how loud it is, and what your voice actually sounds like to other people. Click Start, allow the browser to use the microphone, and you get a live level meter with peak hold plus a real-time waveform of the incoming sound. If the bar moves when you speak, your microphone works; if it stays flat, the tool helps you figure out why, from a muted headset switch to a blocked browser permission.
Frequently asked questions
Is my voice uploaded or stored anywhere during the test?
How do I read the level meter?
The meter does not move at all. What should I check?
I denied the permission by mistake. How do I allow the microphone again?
Why do I hear an echo when I play back the recording?
What sample rate and channel count should I expect?
Why does my recorded voice sound different from what I expect?
Can I test a USB microphone, headset or audio interface?
What format is the downloadable recording?
Why does the browser ask for permission every time or not at all?
About Mic Test, Check Your Microphone Online
The most useful part of any mic check is hearing yourself, so the tester includes a record-and-playback feature. Press the record button, speak for a few seconds, and the recording plays back so you can judge volume, clarity, background noise and hum with your own ears. You can also download the clip to compare microphones or keep a reference. Alongside the meters, the tool reports the microphone's name, the sample rate your system is using and the channel count, and it lets you switch between all connected input devices, built-in mics, USB microphones, headsets and audio interfaces.
Everything happens locally in your browser, which is exactly how a microphone test should work. No audio is uploaded, streamed or stored on any server; the sound goes from your microphone to the analysis code running on this page and nowhere else. The short test recording lives only in your browser's memory and disappears when you leave the page unless you choose to download it. The microphone never activates on its own: it starts only when you click the button, and stopping the test releases the device immediately.
The tester doubles as a troubleshooting guide. Permission problems (NotAllowedError), missing devices (NotFoundError) and microphones locked by other applications (NotReadableError) each produce a clear explanation with concrete steps for Chrome, Firefox, Edge and Safari, plus the Windows and macOS privacy settings that commonly mute microphones system-wide. Use it before job interviews, podcast sessions, online classes or gaming, anywhere a dead mic would be a problem.
From Carbon Buttons to a Microphone in Everything
The microphone is older than recorded music. In 1876, Emile Berliner and Thomas Edison raced to improve the telephone's weak transmitter, and Edison's carbon-button microphone of 1877 became the standard: a capsule of carbon granules whose electrical resistance changed with sound pressure. Carbon microphones were so robust and simple that they remained in telephones for almost a century. The condenser microphone followed in 1916 at Bell Labs, and the ribbon microphone of the 1920s gave radio its classic warm sound, crooners like Bing Crosby built entire singing styles around what these new sensitive microphones allowed.
The device that put a microphone into every pocket is the MEMS microphone, a micro-electro-mechanical system etched into silicon like a computer chip. Commercialised in the early 2000s, MEMS capsules measure just a few millimetres, cost cents, and are manufactured by the billions. A modern smartphone typically carries three or four of them for noise cancellation and stereo capture, and they hide in laptops, earbuds, cars, smart speakers and even light bulbs. By volume, more microphones are manufactured each year than there are people on Earth.
Browsers gained microphone access with the WebRTC project, which Google open-sourced in 2011 and which the W3C standardised as getUserMedia. The design decision that still shapes every mic test today was to make user permission mandatory and per-site: no web page can listen without an explicit click. The Web Audio API, standardised alongside it, provides the AnalyserNode this tool uses to compute levels and draw the waveform, a full digital signal processing chain running inside the page, with no sound ever leaving your machine.