How do I test my microphone online?

Press Start microphone test and grant permission when the browser asks. Speak at normal volume and watch the level meter move in real time. A responsive bar means the mic is working and being picked up correctly.

Is my audio recorded or uploaded?

No. The tool measures the loudness of your input in your browser using the Web Audio API. No audio is ever recorded, saved or transmitted — only a moving level bar is shown, and it stops the instant you press Stop.

The meter is not moving — what is wrong?

Usually the mic is muted, the wrong input device is selected in your system settings, or permission was denied. Check the system input, un-mute the microphone, confirm the browser has permission, and try again.

What is a good microphone level?

For a call or recording you want normal speech to move the meter into the middle-to-upper range without constantly hitting the top. If it maxes out and turns amber, lower your input gain; if it barely registers, raise the gain or move closer.

Does this work with USB, Bluetooth and built-in mics?

Yes. Any microphone your operating system recognises — built-in, USB, headset or Bluetooth — can be tested, as long as it is set as the active input and the browser has permission.

What is the Microphone Test?

Free online microphone test. Speak and watch a live input-level meter with a peak reading to confirm your mic works before a call or recording. Audio is analysed in your browser and never recorded or uploaded. It runs free in your browser on Gera Tools, with nothing uploaded.

Microphone Test — Gera Tools

Name: Microphone Test
Creator: Gera Tools
License: https://creativecommons.org/licenses/by/4.0/

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Check your microphone with a live level meter

The Microphone Test confirms your mic is capturing sound before a video call, recording or stream. Press Start microphone test, allow access, and speak normally: the level meter moves in real time and a peak marker records your loudest moment. All of this happens in your browser using the Web Audio API — no audio is ever recorded or uploaded.

A healthy setup shows the bar reacting immediately to your voice, filling the middle-to-upper part of the meter during normal speech. If the meter barely twitches, the mic is muted, the wrong input is selected, or permission was denied.

Reading the meter

Green fill — a good, usable signal level.
Amber near the top — your input is close to clipping; lower the gain.
No movement — no signal is reaching the browser; check the source.
Peak marker — the thin line shows the loudest level reached this session.

Fixing a mic that shows no signal

If the meter stays flat, work through the common causes in order: un-mute the microphone, set the correct device as the system input, grant the browser microphone permission (re-enable it in site settings if you blocked it before), and make sure no other app has exclusive control of the device. Then reload and test again.

Because the analysis is entirely client-side, this is a private alternative to tools that send your voice to a server.