Microphone test: check input levels and recording quality
Speak into your microphone and watch the live level meter respond, then record a short clip and play it back to hear exactly what other people hear on your calls.
Input level
Speak normally into your microphone. A healthy level bounces between 30% and 80% on louder syllables. If it stays near 0% while talking, the wrong device is likely selected or the mic is muted at the OS level.
Quick guide: how to use the Microphone Test
Takes under a minute- 1Click Start and allow microphone access when prompted.
- 2Pick the correct input device if you have more than one.
- 3Speak normally and watch the level meter and waveform react.
- 4No movement means the mic is muted, blocked, or the wrong device is selected.
Overview
A microphone problem is one of the most disruptive things that can happen on a video call, because it's often invisible to you while being completely obvious to everyone else on the line. This test gives you an honest, immediate read on whether your microphone is actually capturing sound, how strong the signal is, and what your recorded voice actually sounds like when played back, independent of any single meeting app's settings or processing.
The test works by requesting access to your microphone through the browser, then feeding the live audio stream into a level meter built on the Web Audio API. You can also record a short clip directly in the browser and play it back immediately, which is the fastest way to catch problems like distortion, background hum, or a mic that's positioned too far away to pick up a clear voice.
How to read your results
The live level meter
As you speak, the meter should rise and fall in step with your voice, staying comfortably in a mid range during normal conversation and only pushing toward the top when you speak loudly or shout. A meter that barely moves points to low input gain or a quiet, distant microphone. A meter that's pinned near maximum even during normal speech suggests the input gain is set too high and your voice is likely already clipping and distorting on calls.
Peak level versus average level
Average level tells you how loud your typical speaking volume registers, while peak level captures the loudest moment, like a laugh or a sudden louder word. A healthy setup keeps peaks from consistently slamming into the maximum, since clipped peaks are what produce that harsh, crackling distortion people notice immediately on a call even if the rest of your audio sounds fine.
Listening back to your recording
Recording and playing back a short clip is more revealing than watching a meter alone, because your ears catch problems a level display can't show, like background hum, an echo from your room, or a slightly muffled tone from a mic that's covered or angled away from your mouth.
Troubleshooting common microphone problems
No level movement at all
- Confirm the browser has microphone permission at the operating system level, not just in-browser.
- Check for a physical mute button or switch on external microphones and headsets.
- Try unplugging and reconnecting a USB microphone to force the operating system to redetect it.
- Make sure no other open application is currently holding an exclusive lock on the microphone.
Quiet or weak signal
Raise the input volume or gain for your specific microphone in your operating system's sound settings, since browsers generally respect whatever gain level the system has configured rather than applying their own boost. Positioning also matters far more than people expect: even a few extra inches of distance from a laptop's built-in mic can noticeably reduce how much of your voice actually gets captured.
Distorted or crackling audio
This is almost always caused by input gain set too high, causing the signal to clip. Lower the microphone's input level in system sound settings and retest, watching for peaks that no longer slam against the top of the meter. A damaged cable or a failing analog-to-digital converter on an aging microphone can also cause intermittent crackling that gain adjustments won't fix.
Works here but not in a specific meeting app
Open that app's own audio settings and confirm it has the correct microphone selected as its input device, since apps often remember an old default device and don't automatically switch when you plug in a new one. Restarting the app after switching input devices in your operating system's settings also resolves a surprising number of stubborn cases.
Fixing common causes of noise and hum
A steady electrical hum or hiss in a recording usually traces back to the physical connection rather than the microphone itself. USB extension cables, cheap adapters, and being plugged into the same power strip as a laptop charger are common culprits, since they introduce electrical interference into an analog signal path before it ever reaches your computer.
If you suspect interference, try unplugging your laptop charger temporarily and testing again, moving the microphone or its cable away from other electronics, or connecting directly to a USB port on your computer instead of through a hub or dock. Digital USB microphones are inherently more resistant to this kind of noise than microphones connected through an analog 3.5mm jack.
Getting the best sound before an important call
If you have an important meeting, interview, or recording coming up, run this test a few minutes ahead of time rather than discovering a problem live. Speak a full sentence at your normal call volume, check that the meter behaves sensibly, and listen back to a recorded clip in a quiet moment so you can actually judge tone and clarity rather than just confirming the mic technically works.
Small habits make a bigger difference than expensive hardware for most people: sit a consistent distance from your microphone, avoid tapping the desk or device near it, and close other applications that might silently be competing for access to the same input device.
Frequently asked questions
How do I test my microphone online without installing anything?
Just click the start button above and allow microphone access when your browser prompts you. You'll see a live level meter reacting to your voice instantly, and you can record a few seconds of audio to play back and confirm exactly how you sound to other people.
Why can't anyone hear me on Zoom even though my mic looks fine here?
This test confirms your microphone is physically working and delivering signal to the browser, but Zoom has its own separate input device selection and its own volume setting that can be muted or pointed at the wrong device. Check Zoom's audio settings menu specifically and make sure the correct microphone is selected there, not just plugged in.
The level meter barely moves even when I talk loudly.
This usually means the input gain for your microphone is set very low at the operating system level, or you're using a directional microphone and speaking outside its pickup pattern. Try moving closer to the mic, speaking directly into it rather than across it, and raising the input volume in your system's sound settings.
Why does my recording sound tinny or distant compared to how I sound in person?
Built-in laptop microphones are small and positioned away from your mouth, which naturally produces a thinner, more distant sound than a dedicated external microphone held or mounted closer to you. This is a physical limitation of the hardware rather than a setting you can fix, though moving closer to the laptop and reducing background noise both help.
I have two microphones and I'm not sure which one is active.
Use the device dropdown above to select each microphone one at a time and watch the level meter while you speak into it. Whichever one visibly responds to your voice is the one actually receiving signal, which is a faster way to confirm the right device than reading generic-sounding device names.
Why does my microphone work in this test but not in a specific app?
Most apps let only one process access a given microphone at a time, and some apps default to a different input device than your operating system's default. Check the specific app's audio or settings menu for its own microphone selector, and make sure no other app with an open mic connection, like a background chat client, is holding the device.
What's causing a constant hissing or buzzing sound in my recording?
Persistent hiss is usually electrical noise, often from a cheap USB extension cable, a nearby charger, or a laptop power adapter interfering with an analog microphone signal. Try a different USB port, unplug the charger while testing, or switch to a microphone with a digital USB connection, which is far less susceptible to this kind of interference.
Should I test with headphones on or off?
Test with whatever setup you'll actually use during calls, since headphones with a built-in microphone route audio through an entirely different physical connection than your laptop's internal mic. If you normally wear a headset for meetings, testing with it on catches problems, like a loose connector, that testing with the built-in mic would never reveal.
Why does my voice sound delayed when I play back the recording immediately?
A short delay between recording and playback is normal and comes from audio buffering in the browser, not a defect in your microphone. If you notice actual lag during a live call rather than in this test's recording feature, that's a separate issue related to network latency or app processing, not the microphone itself.
Can background noise suppression make my mic seem quieter here than in a call app?
Yes. Many call apps apply their own noise suppression and automatic gain control that can make your voice sound more processed, sometimes quieter or more compressed, than the raw signal shown in this test's level meter. This test reflects your hardware's actual raw output, which is the right baseline to check before blaming an app's processing.
My external USB microphone isn't showing up in the device list at all.
Confirm the microphone is plugged in and recognized by your operating system first, since a device that doesn't appear in your system's sound settings won't appear in any browser either. Try a different USB port, check for a physical mute switch on the microphone itself, and make sure your browser has been granted microphone permission in the operating system's privacy settings.