🎯 Test Your Microphone
Values are relative (dBFS), not calibrated sound pressure levels.
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🔍 What Does This Microphone Test Check?
This tool uses the Web Audio API (AudioContext + AnalyserNode) combined with getUserMedia to access your microphone and process its signal in real-time. It visualizes the time-domain waveform, displays a frequency spectrum, calculates a live RMS dBFS reading, and tracks your peak level — all without any data leaving your browser.
🔒 Is My Audio Private?
Yes, completely. Audio is analyzed in real-time only for visualization purposes. The optional recording feature stores audio locally in your browser memory only — nothing is ever uploaded to any server. When you download a recording, the file goes directly to your device. The AudioContext is properly closed when you stop the test, and all media tracks are released immediately. This tool requires HTTPS to ensure your session is encrypted. For video testing with the same privacy guarantee, see our camera test.
🔧 Microphone Not Working? How to Fix Common Issues
If your microphone is not working after clicking Start Mic, these are the most common causes and fixes:
Permission denied: Click the lock or camera icon in your browser address bar, find the Microphone setting, and change it to "Allow." Then reload the page and try again.
Mic in use by another app: Close Zoom, Discord, Teams, or any other app that may be using your microphone. Only one app can access the mic at a time on most systems.
Wrong input device selected: Open your operating system's sound settings and ensure the correct microphone is set as the default input device. On Windows, go to Settings → Sound → Input. On Mac, go to System Settings → Sound → Input.
Microphone muted or volume too low: Check that your microphone is not physically muted (some headsets have a mute button) and that the input volume is not set to zero in your OS settings.
Browser not supported or outdated: This free mic test works best in Chrome, Edge, Firefox, and Safari. Update your browser to the latest version if you experience issues.
🎧 How to Test Your Microphone for Discord, Zoom & Gaming
Wondering if your mic is ready for voice calls or gaming? This tool lets you test microphone online free before joining any call. Check your dBFS reading — for Discord and Zoom, you typically want your voice to peak between -20 and -6 dBFS. If your mic reads below -40 dBFS, it is too quiet and other participants may not hear you clearly.
For gaming headsets, use the frequency spectrum to verify that your mic picks up the voice range (roughly 80 Hz to 8 kHz). A healthy gaming mic should show strong mid-range bars when you speak. If only low-frequency bars light up, your mic may be positioned too far away or its gain may be set too low. Once your audio is confirmed, also run our keyboard test to verify your full gaming setup.
✅ How to Check If Your Mic Is Working — Quick Guide
Follow these steps to check mic working status in under 60 seconds:
1. Click Start Mic and grant browser permission when prompted. 2. Speak normally — the waveform should animate and the dBFS meter should rise above -40 dBFS. 3. Watch the Mic Health badge: a Perfect badge confirms your microphone is working correctly. 4. If the waveform stays flat and the meter shows no activity, your mic is not being detected — see the troubleshooting steps above. 5. Use the Record & Playback feature to hear exactly how your mic sounds to others.
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Use these tools and tips to check mic working status, test hardware performance, and fix common microphone issues — all directly in your browser with no downloads required.
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🛠️ Microphone Not Working? Common Fixes
If your microphone is not working, try these steps to resolve it quickly using this microphone test online:
Permission denied: Click the lock icon in your browser address bar, set Microphone to "Allow," then reload the page and run the mic test again.
Mic in use by another app: Close any application that may be accessing your microphone (voice chat apps, recording software, video call tools), then retest here to confirm the mic is free.
Fix microphone issues on Windows 11/10: Open Settings → System → Sound → Input, select your microphone, and click "Test your microphone." Ensure input volume is above 70% and no other app has exclusive control. Return here to verify the fix.
Wrong input device: In your OS sound settings, confirm the correct microphone is set as the default input device. Then use this tool to check mic working status before your next session.
❓ Frequently Asked Questions
How does the microphone test work?
This tool uses getUserMedia to access your microphone and the Web Audio API (AudioContext + AnalyserNode) to process the signal. The waveform oscilloscope, dBFS meter, and frequency spectrum are rendered in real-time via the Canvas API — entirely locally in your browser.
What is dBFS and why does it matter?
dBFS (decibels relative to Full Scale) measures your audio level where 0 dBFS is the digital maximum. Normal speech typically sits between -20 and -12 dBFS. Values near 0 indicate clipping (too loud), while values below -40 dBFS suggest a weak or distant signal.
Is my audio recorded or sent anywhere?
No. The audio is only analyzed in real-time for visualization purposes. No audio data is ever recorded, stored, or uploaded to any server. All processing happens exclusively in your browser and the stream is cleanly released when you click Stop.
Why is my microphone not detected?
Common causes: (1) Permission was denied — click the lock icon in your browser address bar and allow microphone access. (2) Your mic may be in use by another application. (3) This page must be served over HTTPS. (4) No microphone is connected — check your system's audio input settings.
What should a healthy microphone reading look like?
When speaking normally, the waveform should move dynamically, dBFS should read between -30 and -10 dBFS, and the green/yellow zones of the sensitivity meter should activate. If nothing moves when you speak, your microphone may be muted, set to very low gain, or not correctly selected.
What does the frequency spectrum show?
The frequency spectrum shows the intensity of different frequency ranges in your audio signal. Left bars represent low bass frequencies; right bars represent treble. A healthy microphone shows clear, dynamic activity across the relevant frequency range when you speak or make sounds.
Why is my microphone not working in Chrome or on Windows?
In Chrome, microphone access requires HTTPS and an explicit permission grant. Click the lock icon in the address bar, set Microphone to "Allow," and reload the page. On Windows, also check Settings → Privacy & Security → Microphone and make sure both "Microphone access" and access for your browser are enabled. If another app is using the mic, close it first.
Can I use this to test my mic for Discord or Zoom?
Yes. This free online mic test is a great way to verify your microphone before joining Discord, Zoom, Teams, or any video call. Speak naturally and aim for a dBFS reading between -20 and -6 dBFS — that range is ideal for clear voice communication. If your level is too low, increase your microphone gain in your OS sound settings before your next call.