Terms of service
The mic test is a free, browser based tool provided as is. These terms set out what it is for, where its limits are, and what we ask of you when using it.
Last updated: 2026-11-141. Nature of the service
MicTester provides a single page that reads a microphone stream locally and shows measurements. There is no account, no paid tier, no audio upload service and no guarantee of availability. We may change or discontinue the tool.
2. No accuracy promise
Readings depend on your microphone, sound card, operating system settings, browser processing and room conditions. They are in dBFS and are intended as practical guidance for a quick check, not as calibration data or a laboratory measurement.
We do not provide dB SPL values, frequency response curves, hardware diagnostics or certification of any device. Do not use this page as the sole basis for a purchasing, safety or compliance decision.
3. Acceptable use
Use the tool to check your own microphone and equipment. Do not attempt to capture or process the voice of another person without their knowledge and consent, do not use it to bypass browser permission prompts, and do not interfere with the operation of the page or its hosting.
4. Browser and device differences
The Denoise, Echo cancel and Auto gain switches are constraints passed to getUserMedia. A browser may ignore a constraint it cannot satisfy, and mobile systems often apply processing of their own. Sample rate, latency and device labels therefore vary between devices even when the microphone is the same.
Bluetooth headsets commonly switch to a narrow band call mode while the microphone is active. This is a device behaviour, not a fault in the tool.
5. Intellectual property
The design, text and code of this page are original work. You are welcome to link to it and to quote short passages with attribution. Do not republish the page as your own service or present it as an official product of another company.
Device names, browser names and operating system names mentioned here belong to their respective owners and appear only to describe where settings can be found.
6. Limitation of liability
The tool is provided as is, without warranty of any kind. To the extent permitted by applicable law, we are not liable for missed calls, failed recordings, hardware decisions made on the basis of a reading, or any indirect loss arising from the use of this page.
You remain responsible for your own equipment and for the permissions you grant in your browser.
7. Changes and contact
We may revise these terms as the tool changes. The current version always carries its last updated date. Write to ha0719#gmail.com (replace # with @) with questions.
This page does not name a specific governing jurisdiction or a corporate entity. If a formal designation is needed, contact us and we will provide the details that apply rather than asserting them here.