How to Test Your Microphone Online
If you want to know how to test your microphone, open Mic Test, press "Test my microphone", allow access when your browser asks, and say a few words. A level meter moves while you speak and a green message confirms that sound is coming through. The whole check takes under a minute.
What you'll need
- A microphone: the one built into your laptop or phone, a headset, or a USB mic.
- A current browser. Microphone access only works on a secure (https) page, which the Mic Test page is.
There is nothing to install and no account to create. This online mic test tool runs in your browser, and your audio never leaves your device: the microphone is analysed locally, and nothing is uploaded or stored.
How to test your microphone online, step by step
- Press "Test my microphone". It is the amber button at the bottom of the panel. Until you press it, the page isn't using your microphone at all.
- Choose Allow in the permission prompt. Your browser asks whether this site may use your microphone. Allowing it gives this page access to the input while the test runs. If you block it, the tool shows "Microphone permission was blocked. Allow it from the address bar, then try again."
- Say something. The status line reads "Listening… say something." Talk at your normal volume, at the distance you would normally sit from the mic.
- Look for the green verdict. Once the tool picks up your voice, the status line changes to "Your microphone is working — sound is coming through."
- Check the device panel. Under the meter you'll see four lines: Device, Sample rate, Channels and Browser processing. Device is the one that matters most, because it tells you which microphone the browser is really using. If more than one input is connected, a "Switch microphone" dropdown appears here too. Picking another device restarts the test on that microphone.
- Press "Record a 5-second sample". The button changes to "Recording 5 s…" and stops on its own. A small audio player then appears so you can listen back.
- Press "Stop test" when you're done. This releases the microphone, so the recording indicator most browsers show on the tab should clear.
How to read the input level meter
The "Input level" row shows the current level as a number in decibels, with a bar underneath. If the unit is new to you, What Is a Decibel (dB)? covers it. For this test you only need to know that 0 dB is the loudest a digital signal can go, and quieter sounds are negative numbers further below it.
- The bar runs from −60 dB at the left edge to 0 dB at the right.
- The green fill is your level right now.
- The thin white line marks your recent peak. It jumps up with the loudest moment and falls back slowly, so you can see how loud you got even after you stop talking.
- The waveform under the bar is a live picture of the signal. It is a flat line in silence and a wobbling line when there is sound.
A healthy input is easy to recognise without chasing a specific number. The bar moves clearly when you talk, drops back when you stop, and doesn't sit pinned against the right edge.
The tool confirms your mic once the level rises above −42 dB, which normal speech close to a working microphone should manage. If it hears nothing in the first 5 seconds, the status line changes to "Connected, but no sound yet. Check the mute switch, the input level, or pick another device below." That message means the browser has opened a microphone, but no signal is arriving from it.
Mic test playback: hear what you sound like
The meter shows that the mic works. The playback sample shows how it sounds, and that is the part people on the other end of a call notice.
A good sample is clear, sounds close, and stays at a steady volume with no harsh crackle. If yours doesn't, the kind of problem usually points to the cause:
| What you hear | Likely cause |
|---|---|
| Muffled or dull | Something is covering the mic, it is pointed away from you, or heavy noise suppression is thinning out your voice. |
| Distant or echoey | You are too far from the mic, so it picks up more of the room than of you. |
| Distorted or crackly on loud words | The input is too hot and is clipping. See What Is Audio Clipping (and How to Avoid It)?. |
| Constant hiss or hum | The input level is turned up very high to compensate for a quiet source, or there is noise in the room or on the cable. |
The "Browser processing" line is worth reading alongside the sample. It lists whichever of echo cancellation, noise suppression and auto gain your browser has switched on for this microphone, or "none". These features reshape your voice before any website receives it, so they are part of what other people hear in browser-based calls.
The sample is held in the tab's memory only. It is discarded when you record another one, start a new test or leave the page, and the player disappears when you stop the test. The tool has no button for saving it, because it is a check and not a recorder. If you want a take you can keep, use the Audio Recorder.
Troubleshooting: my mic isn't picking up sound
The permission was blocked. The tool shows "Microphone permission was blocked. Allow it from the address bar, then try again." Open the site permissions from the address bar (in most browsers, the icon beside the web address), set Microphone to Allow, and press "Test my microphone" again. If the browser never asks at all, your operating system may be blocking it: check Settings > Privacy & security > Microphone on Windows, or System Settings > Privacy & Security > Microphone on macOS.
No microphone was found. The message is "No microphone was found. Plug one in and try again." Reseat the cable, try another USB port, or re-pair a Bluetooth headset, then run the test again.
Another app is using it. "Could not open the microphone. Another app may be using it." Close any call, recording or streaming app that might be holding the mic, then retry. The same message can appear for other hardware or driver faults, so a restart is a reasonable next step.
It is connected but silent. Work through the three things the tool names. First, the mute switch: many headsets have one on the cable or the earcup, and some laptops have a mic mute key. Second, the device: use "Switch microphone" to try each input, because the browser may have picked a webcam or a dock instead of your headset. Third, the system input level: on Windows go to Settings > System > Sound > Input, and on macOS go to System Settings > Sound > Input, then raise the input volume.
It is too quiet or too loud. Move closer to a quiet mic before you turn anything up, since raising the level raises the background noise with it. If the bar keeps hitting the right edge, lower the input volume or back away a little. What Is Gain Staging? explains why setting a sensible level at the source matters.
What to do once your mic works
Once the mic test comes back green, you can get on with what you needed the mic for. To make a recording you can keep, follow How to Record Audio in Your Browser. If the recording has a steady background hiss or room noise, the Noise Reducer can clean up a voice file afterwards.
For a show, How to Record and Edit a Podcast Online Free covers the full route from recording to export. Musicians can use the same microphone to tune up: see How to Tune a Guitar With an Online Tuner. More walkthroughs are in the Audio How-To Guides.
Frequently asked questions
Is an online mic test safe and private?
It depends on the tool, so check how it handles your audio. The Vocal Cut Mic Test analyses your microphone inside your browser, and your audio never leaves your device. The 5-second sample is held in the tab's memory and nothing is uploaded or stored. The microphone is only active between pressing "Test my microphone" and pressing "Stop test".
Why can't I hear myself while I test my microphone?
The live microphone signal is never sent to your speakers. That is deliberate: playing a mic back through nearby speakers creates a feedback loop, which is the loud squeal you hear at badly set up events. To hear yourself, press "Record a 5-second sample" and play the result back once the recording finishes.
How do I test my mic before a Zoom or Discord call?
Run the online mic test a few minutes before the call. Confirm you get the green "working" message, note the name on the Device line, and play back a sample to check the sound. Then press "Stop test" and pick the same device in your call app's audio settings, since each app chooses its microphone separately.
Why does my mic work here but not in another app?
A passing test shows the hardware and the browser are fine, so the problem is most likely in the other app's settings. Most often the app is set to a different input device, is muted inside the app, or hasn't been given microphone permission by your operating system. Another program holding the mic can also block it.
Does the mic test work on a phone?
It works in mobile browsers that support microphone access on a secure page, which current versions of the common mobile browsers generally do. You'll get the same permission prompt, level meter and playback sample. Phones usually expose fewer inputs, so the "Switch microphone" dropdown may not appear, and behaviour with Bluetooth headsets varies by device.