Online mic test
Check that your microphone works in seconds. Watch the live level meter and waveform, catch clipping and background noise, switch between microphones, and listen back to a quick test recording. It runs entirely in your browser.
Press Start mic test and allow microphone access. Then talk normally: the waveform and level meter should move with your voice.
Everything happens in your browser. Nothing is uploaded or saved.
How to test your microphone
- Press Start mic test and allow microphone access.
- Speak at your normal volume. The meter should bounce in the green and yellow area.
- If you have several microphones, choose one from the list.
- Press Measure background noise and stay quiet for three seconds.
- Record the 5-second test and play it back to hear exactly what others hear.
Reading the level meter
The meter shows your input level in decibels relative to full scale (dB). Zero is the loudest a recording can capture; anything louder distorts.
- Below -45 dB while talking: too quiet. Move closer or raise your input gain.
- -24 to -12 dB: a healthy level for speech.
- Peaks above -3 dB or a red meter: too hot. Lower the gain to avoid distortion.
- Background above -45 dB while silent: noisy room. Turn off fans or move somewhere quieter.
Microphone not working? Quick fixes
- Permission blocked: click the lock or settings icon next to the web address and allow the microphone, then reload.
- Windows: open Settings, System, Sound, and check the input device and its volume. Also check Privacy and security, Microphone, and allow apps to use it.
- Mac: open System Settings, Sound, Input, choose your microphone and watch its input level. Under Privacy and Security, Microphone, allow your browser.
- Headsets: check the mute switch on the cable or earcup.
- Video calls: close Zoom, Teams, Discord, or other apps that might be holding the microphone.
Add this mic test to your website
Teachers, streamers, podcast hosts, and support teams can embed the mic test for free. The iframe needs microphone permission, which the code below includes.
Free to use on any site. Please keep the credit link.
Next steps
Once your mic is set, you can record your voice, try the voice changer, check your voice pitch, or dub a movie scene with your own voice.
Frequently asked questions
How do I test my microphone online?
Press Start mic test, allow microphone access when your browser asks, and speak. If the waveform and level meter move with your voice, your microphone works. Record the 5-second test to hear how you sound.
Why is my microphone not working?
The most common causes are blocked browser permission, the wrong input device selected, a muted or disconnected microphone, or another app (like a video call) using it. Allow the microphone in the browser's address bar, pick the right device from the list, and close other apps that use the mic.
How do I allow microphone access in Chrome?
Click the icon to the left of the web address, find Microphone, and set it to Allow. You can also open Chrome settings, go to Privacy and security, then Site settings, then Microphone.
What is a good microphone level?
For speech, aim for your normal speaking voice to sit around -24 to -12 dB on the meter, with loud moments peaking below about -6 dB. If the meter turns red or the tool reports clipping, lower your input gain or move back.
Is this mic test private?
Yes. Audio is analyzed in your browser and the 5-second test clip stays on your device. Nothing is uploaded to SceneDub.
Can I test my mic on an iPhone or Android phone?
Yes. Open this page in your phone's browser, press Start mic test, and allow microphone access. If you previously blocked it, enable the microphone for your browser in your phone's settings.