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Mic Test / Microphone Test

Grant microphone permission, choose an input device, watch the live level meter, and verify that your browser receives audio.

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—RMS level
—dBFS estimate
—Peak dBFS
—Sample rate

dBFS is a digital input-level estimate, not calibrated acoustic dB SPL. This page cannot measure real-world sound pressure without calibrated hardware.

How to use this Mic Test / Microphone Test

Test whether your microphone is working and monitor live input level. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.