Why does my browser ask for microphone permission again even though I allowed it before?

Most browsers remember your choice per site, but if you denied access once, some browsers won't ask again automatically — you have to change the site's microphone setting yourself (see the "how to allow" instructions shown after a denial) and reload the page.

What does the clipping warning actually mean?

Clipping means your input signal is hitting the maximum level the microphone or audio interface can represent (0 dBFS), which distorts the sound. It usually means your gain, input volume, or the mic's proximity to your mouth needs to come down a little.

Why do device labels only show up after I click Start?

Browsers hide microphone names and other identifying details until you've granted microphone permission for the site, as a privacy protection. Once you allow access, the real device names appear in the picker.

Yes. Every tool is free to use, with no account and no credit card. The work runs on your device rather than on our servers, which is what keeps it free to run.

Does it work on mobile?

Yes. It runs in current mobile browsers on iOS and Android, with nothing to install.

🎙️

Free Microphone Test

Check that your microphone works before a call or recording: pick the input device, watch a live level meter and waveform, and record a 5-second playback sample.

Runs in your browserNo sign-up, no pop-upsNo login requiredFree foreverLive level meter5s recording testNo install

Works offline once loaded

Test your microphone before a call, stream or recording. We'll ask for permission, then show you a live level meter and let you record a quick playback sample.

🎙️ Audio is processed entirely in your browser and is never uploaded — the recording only exists in this tab's memory until you close or reload the page.

How It Works

Run a full microphone check in three steps, entirely in your browser.

1
Grant microphone access
Click Start and allow the browser's microphone permission prompt. If you've blocked it before, the tool shows exact steps to re-enable it for Chrome, Safari or Firefox.
2
Watch the live meter and waveform
Speak normally and watch the level bar and waveform respond in real time. A red warning appears if the signal is clipping for a sustained stretch.
3
Record a 5-second test clip
Record a short sample and play it back immediately to hear exactly what others would hear on a call.
4
Switch devices or re-record
If you have more than one microphone connected, switch between them from the device list and re-record as many times as you like.

Nothing is uploaded — the microphone stream and the recorded clip stay in your browser tab and are discarded when you leave the page.

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Free Microphone Test

How It Works

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Frequently Asked Questions