Mic Test
Check the right microphone, see its input level, then record a short sample and hear it back — entirely in your browser.
- Fewer clicks, keyboard friendly
Live microphone test
Audio is analysed and recorded only in this browser tab.
Input level
0%
−∞ dBFS
Ready — start the test when you are ready to grant microphone access.
The recording stops automatically after 10 seconds and disappears when this page closes.
How to use
- Choose a microphone if more than one is connected.
- Select Start test and allow microphone access in the browser prompt.
- Speak at your normal call volume and watch the input meter.
- Select Record 10 seconds, say a few words, then play the sample back.
What the level meter measures
The meter shows peak level in dBFS: decibels relative to the largest digital signal the browser can represent. 0 dBFS is the ceiling, not a real-world sound-pressure measurement. For ordinary speech, peaks roughly between −12 and −6 dBFS leave useful headroom; repeated peaks at 0 dBFS mean the input is clipping and may sound distorted. Browser processing, microphone gain, distance and room noise all affect the reading.
Why a short recording helps
A moving meter confirms that the browser receives a signal, but it cannot tell you whether your voice sounds clear through your speakers or headphones. The 10-second sample is recorded as a temporary in-memory browser Blob and played on this device. It is not uploaded, saved to an account or retained after the page closes.
Choose the same input as your call app
After you grant permission, browsers can reveal connected input names such as a built-in microphone, USB interface, webcam or headset. Select the same device in the meeting or recording app you will use. This page can confirm browser capture, but Zoom, Teams, Discord and other apps may apply their own input processing and device selection.
Frequently asked questions
Does this mic test upload or store my voice?
No. The live analysis and optional 10-second recording run in the current browser tab. The recording is held only as a temporary local Blob for playback and is discarded when the page closes or you make a new recording.
What does 0 dBFS mean on a microphone test?
0 dBFS is the maximum digital level, so audio that repeatedly reaches it is clipping and can distort. Normal speaking peaks around −12 to −6 dBFS usually leave headroom, although the right level depends on the microphone, distance and the app that will use it.
Why is my microphone not listed?
Many browsers hide microphone names until you allow microphone permission. Start the test once, then open the Microphone menu. If it is still absent, reconnect the device, check operating-system microphone privacy settings and close another app that may be using it.
Why does the meter move but the recording sound different in my meeting?
This test checks the browser stream, while meeting apps can use a different selected device and apply echo cancellation, noise suppression or automatic gain control. Select the same microphone in the app and use that app’s own test before an important call.
Which browsers can run the microphone test?
Current Chrome, Safari and Firefox support the secure browser APIs used for microphone capture, level analysis and temporary recording. Open the HTTPS page directly, not inside a restricted embedded frame. If capture works but local recording is unavailable, the live meter remains usable and the recording control says so.
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Updated 2026-10-19