Webcam & Mic Test
Test your webcam and microphone before a video call — live preview, resolution info and a mic level meter, all on-device.
Last reviewed by the Radiatus Cloud team
Check your camera and microphone before a Zoom / Teams / Meet call. The preview is mirrored like a selfie camera. If nothing appears, check browser site permissions and that no other app is using the camera.
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Test your webcam before a call
A failed camera or microphone at the start of a video call is avoidable with a quick check. This tool tests your webcam and microphone with a live preview, so you confirm they work before a call.
Why testing beforehand matters
Discovering your camera or mic does not work as a meeting starts is stressful and wastes everyone’s time, and the causes, wrong device selected, permission not granted, a hardware fault, are all things a quick test reveals. A live preview shows exactly what your camera captures and confirms the microphone picks up sound, so you fix any problem in private beforehand. It is a small habit that prevents the common awkward start to a video call. The test uses your browser’s access to the devices and shows the result directly.
Confirm before you join
It runs entirely in your browser, so nothing you enter is uploaded and it works without an account, keeping your data on your own machine.
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Frequently Asked Questions
What does the webcam test check?
That your camera works, showing a live preview of what it captures, and that your microphone picks up sound, before you join a call.
Why test before a call?
Because discovering a broken camera or mic as a meeting starts is stressful and wastes time. Testing in private lets you fix it beforehand.
What problems does it reveal?
The wrong device selected, permission not granted, or a hardware fault, all of which a quick live test surfaces.
Does it record anything?
No. It shows a live preview to confirm the devices work; nothing is recorded or uploaded.
Is my video uploaded?
No. The test runs in your browser using its access to your devices, with nothing sent anywhere.
Privacy & Security
Runs entirely in your browser. No data is sent to any server.
How to Use
Click Start and allow access. Check the mirrored preview and speak to see the mic meter move; click Stop to release the devices.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
Related Tools
User Agent Parser
UtilityParse a User-Agent string into browser, engine, operating system and device. Explains why UA strings are unreliable and what to use instead.
QR Code Generator
UtilityGenerate QR codes for URLs, text, Wi-Fi and contact details. Adjustable error correction and size, produced entirely in your browser.
Credit Card Validator
UtilityValidate a card number with the Luhn algorithm and identify the issuing network from its prefix. Runs locally, nothing is transmitted.