Mic Tester
Mic tester
Device information
Microphone name
—
Input device
—
Connection type
—
Sample rate
—
Channel count
—
Bit depth
—
Audio API
—
Status
No microphone selected
Waveform
Frequency spectrum (low → high)
Live level meters
Live volume0%
Input gain indicator (relative, approximate)0%
Decibel estimate (dBFS)
—
Peak level (dBFS)
—
Average level (dBFS)
—
Reset peak/avg
Audio quality analysis
Background noise
—
Clipping detected
—
Signal strength
—
Silence detected
—
Voice activity
—
Click "Start test" and allow microphone access to see your live input.
Why mic tester testing matters
A microphone that "looks" connected in your OS settings can still be muted, gained too low, or picking up more room noise and hum than you realize — problems that are invisible until someone on the other end of a call says "you sound quiet" or "there's an echo." Watching the live level meter is the fastest way to catch this before it happens live.
Tips for accurate results
- Speak at your normal call/stream volume and confirm the level meter sits comfortably in the mid-range without constantly hitting the red (clipping).
- Check the meter while silent — if it never drops close to zero, you likely have background noise or gain set too high.
- If you use a USB mic and a webcam mic, explicitly select the correct device from the input list rather than trusting the system default.
- Tap or lightly knock the mic body to confirm it's the one actually being monitored (helps when multiple mics are plugged in).
Frequently asked questions
The browser is asking for microphone permission — is that safe?
Yes. Microphone access is required by the browser's Web Audio API to visualize your input, and the audio never leaves your device — nothing is uploaded or recorded.
Why does my mic look muted even though the light is on?
The device light usually just indicates power, not that the OS has an active, unmuted input selected. Check your system sound settings' input level alongside this tool.