Microphone Test
Check input level, noise floor, and clipping in the browser. The analysis stays on this device. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testGuides
Fixes for the call that still cannot hear you
Tell a short wizard your setup, or open the device test that matches the problem. Microphone Test is the first check.
Updated Oct 2026
Start the wizard
Zoom mic not working
A five-step fix that changes with Windows, macOS, Ubuntu, the Zoom app, and whether people cannot hear you or the mic is missing.
Every test
Webcam Test
Preview your camera, check resolution and frame rate, and save a snapshot on this device. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testSpeaker Test
Play left, right, and stereo tones, then a frequency sweep, with the volume kept in your control. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testKeyboard Test
See each physical key light up, check rollover, and spot double presses. Keystrokes are not stored. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testMouse Test
Check buttons, the wheel, double-click timing, and how steadily the pointer reports movement. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testController Test
See buttons, sticks, drift, and vibration for Xbox, PlayStation, and Switch-style pads. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testDisplay Test
Measure refresh rate, find stuck pixels, and look for ghosting and color banding. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testMeeting Check
Walk through mic, camera, speakers, and a rough network check, then get one readiness score. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testSpeed Test
Measure ping, jitter, download, and upload with random bytes. This check sends random bytes to measure the connection. It does not send audio, video, or keystrokes.
Open the testDecibel Meter
Measure sound level with your microphone. The reading stays in this tab. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testVoice Recorder
Record audio in the browser and download the file to this device. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testOnline Tuner
Tune a guitar, bass, or ukulele from the microphone. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testTone Generator
Play a sine, square, triangle, or saw wave at any frequency. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testMetronome
Keep time from 30 to 240 BPM, with tap tempo and an accent. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testHeadphone Test
Check left, right, and both channels, then take a short side quiz. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testBass Test
Play low frequencies from 20 Hz to 125 Hz and sweep the range. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testWebcam Mirror
Preview the camera with mirror, brightness, contrast, and zoom. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testWebcam Recorder
Record the camera, with optional microphone audio, and download the clip. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testClick Speed Test
Count clicks per second over 1, 5, 10, or 30 seconds. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testMouse DPI Test
Estimate mouse DPI by moving a known distance. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testDead Pixel Test
Fill the screen with solid colors to find stuck and dead pixels. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testRefresh Rate Test
Measure the frame rate the browser is painting, in hertz. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testGhosting Test
Move bars across the screen to compare motion blur and trails. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testScreen Info
Show resolution, pixel ratio, browser, and device details. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testColor Test
Check grayscale steps, gradients, and a simple gamma match. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testPing Test
Measure latency, jitter, and lost requests to this site. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testTyping Speed Test
Measure words per minute and accuracy on a timed passage. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testReaction Time Test
Measure how fast you respond, in milliseconds. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testAim Trainer
Click targets and see your average time and accuracy. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testNumber Memory
Remember a number that grows by one digit each level. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testVisual Memory
Remember which squares lit up, then click them back. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testTouch Test
Draw with one or more fingers and look for dead zones. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testVibration Test
Play short patterns on the vibration motor. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the testSensor Test
Read orientation, motion, and compass heading when the device has them. Allow the browser prompt, then read the result here. The capture stays in this tab.
Open the test